Isla Mujeres Weather by Month
Isla Mujeres, a beautiful island off the coast of Cancún in Mexico, enjoys a warm tropical climate throughout the year. Temperatures remain relatively steady, with warm days, mild nights, and Caribbean waters that are inviting for swimming, snorkeling, and diving. The island experiences a drier season during winter and spring, while rainfall increases during summer and fall, particularly from September through October.
The following month-by-month guide uses the temperature, rainfall, rainy-day, and daylight data from your screenshot. Water temperatures are approximate monthly estimates for the Caribbean Sea around Isla Mujeres.
Isla Mujeres Weather by Month
You can click the image below to view the full-size weather chart for Isla Mujeres.
January – Warm, Mild and Relatively Dry
- Average high: 82°F (28°C)
- Average low: 68°F (20°C)
- Rainfall: 4.01 inches (101.9 mm)
- Water temperature: 79°F (26°C)
- Daylight: 11 hours
January brings comfortable tropical weather to Isla Mujeres, making it an excellent time to escape colder winter climates. Average daytime temperatures reach around 82°F (28°C), while nighttime temperatures fall to approximately 68°F (20°C). The warm afternoons are ideal for relaxing on Playa Norte, exploring the island by golf cart, and taking boat trips along the Caribbean coast.
Rainfall averages about 4.01 inches (101.9 mm), spread across approximately six days, so occasional showers are possible. The Caribbean Sea averages around 79°F (26°C), making swimming, snorkeling, and other water activities enjoyable. With approximately 11 hours of daylight, visitors have plenty of time to explore the island and enjoy its beautiful beaches.
Best for:
- Relaxing on Playa Norte
- Snorkeling and diving in clear Caribbean waters
- Exploring the island by golf cart
- Enjoying warm-weather winter vacations
February – Warm, Sunny and Mostly Dry
- Average high: 84°F (29°C)
- Average low: 68°F (20°C)
- Rainfall: 2.23 inches (56.5 mm)
- Water temperature: 79°F (26°C)
- Daylight: 11.5 hours
February is one of the drier months on Isla Mujeres, with warm afternoons and comfortable evenings. Average highs reach 84°F (29°C), while nighttime temperatures remain around 68°F (20°C). The pleasant weather is well suited to beach days, snorkeling excursions, and boat trips to nearby coral reefs.
Rainfall decreases to approximately 2.23 inches (56.5 mm), with around four rainy days throughout the month. Sea temperatures hover near 79°F (26°C), providing comfortable conditions for swimming. Daylight increases to about 11.5 hours, giving travelers more time to enjoy outdoor activities without the heavier rainfall typical of autumn.
Best for:
- Beach relaxation and sunbathing
- Snorkeling and reef exploration
- Sailing and catamaran excursions
- Outdoor dining and evening strolls
March – Hot, Pleasant and Dry
- Average high: 86°F (30°C)
- Average low: 70°F (21°C)
- Rainfall: 1.69 inches (43 mm)
- Water temperature: 79°F (26°C)
- Daylight: 12 hours
March brings warmer weather and relatively little rain to Isla Mujeres. Average daytime temperatures reach 86°F (30°C), while nighttime lows hover around 70°F (21°C). The combination of warm sunshine and limited rainfall makes this a popular month for exploring the island’s beaches and turquoise waters.
Rainfall averages just 1.69 inches (43 mm), with approximately three rainy days. The sea remains around 79°F (26°C), making it suitable for swimming, snorkeling, and kayaking. With 12 hours of daylight, visitors can enjoy long beach afternoons and boat excursions, although sunscreen, sunglasses, and plenty of drinking water are important during the warmer hours.
Best for:
- Swimming and snorkeling
- Kayaking and paddleboarding
- Full-day boat excursions
- Enjoying sunny beach weather
April – Hot, Sunny and Mostly Dry
- Average high: 90°F (32°C)
- Average low: 72°F (22°C)
- Rainfall: 1.49 inches (37.8 mm)
- Water temperature: 80°F (27°C)
- Daylight: 12.5 hours
April is one of the warmest and driest months of spring on Isla Mujeres. Average daytime temperatures climb to around 90°F (32°C), while nighttime temperatures remain near 72°F (22°C). The warm weather is ideal for spending time on the beach, taking snorkeling trips, and exploring the island’s coastal attractions.
Rainfall averages only 1.49 inches (37.8 mm), with approximately two rainy days, making April an excellent month for outdoor adventures. Caribbean water temperatures reach around 80°F (27°C), offering comfortable conditions for swimming and diving. With 12.5 hours of daylight, visitors can enjoy extended afternoons outdoors, although midday sunshine can be intense.
Best for:
- Swimming and snorkeling
- Visiting Playa Norte and Playa Centro
- Diving and exploring coral reefs
- Enjoying long, sunny beach days
May – Hot, Humid and Increasingly Wet
- Average high: 91°F (33°C)
- Average low: 75°F (24°C)
- Rainfall: 3.40 inches (86.3 mm)
- Water temperature: 82°F (28°C)
- Daylight: 13 hours
May brings hot tropical weather to Isla Mujeres, with average highs around 91°F (33°C) and nighttime lows near 75°F (24°C). The island becomes warmer and more humid as summer approaches, making the sea and shaded outdoor spaces particularly appealing during the hottest parts of the day.
Rainfall increases to approximately 3.40 inches (86.3 mm), occurring over about four days. Showers may develop, but they do not necessarily disrupt an entire day of activities. Water temperatures average around 82°F (28°C), making the Caribbean especially inviting for swimming and snorkeling. With 13 hours of daylight, May offers plenty of time for sightseeing and water-based excursions.
Best for:
- Swimming in warm Caribbean waters
- Snorkeling and scuba diving
- Taking boat trips and coastal excursions
- Enjoying quieter beaches before the summer peak
June – Hot, Humid and Moderately Wet
- Average high: 91°F (33°C)
- Average low: 75°F (24°C)
- Rainfall: 5.92 inches (150.4 mm)
- Water temperature: 83°F (28°C)
- Daylight: 13.5 hours
June is hot and humid on Isla Mujeres, with daytime temperatures averaging 91°F (33°C) and nighttime temperatures around 75°F (24°C). The tropical conditions are well suited to beach vacations, although humidity can make the afternoons feel warmer than the thermometer suggests.
Rainfall rises to approximately 5.92 inches (150.4 mm), with around eight rainy days during the month. Showers can be heavier than those in spring, so flexible plans are helpful. The Caribbean Sea warms to about 83°F (28°C), creating excellent conditions for swimming, snorkeling, and diving. June also offers approximately 13.5 hours of daylight, providing long days for island adventures.
Best for:
- Swimming and snorkeling in warm water
- Exploring underwater reefs
- Enjoying early-morning beach activities
- Taking flexible boat excursions around the island
July – Hot, Sunny and Warm-Water Friendly
- Average high: 93°F (34°C)
- Average low: 75°F (24°C)
- Rainfall: 3.08 inches (78.2 mm)
- Water temperature: 84°F (29°C)
- Daylight: 13.5 hours
July is one of the hottest months on Isla Mujeres, with average daytime temperatures reaching 93°F (34°C). Nights remain warm at approximately 75°F (24°C), so lightweight clothing and accommodations with air conditioning can make the tropical heat more comfortable.
Rainfall averages around 3.08 inches (78.2 mm), spread across approximately six days. Although summer showers are possible, there are still many opportunities to enjoy outdoor activities. Sea temperatures reach approximately 84°F (29°C), making swimming and snorkeling particularly appealing. July has around 13.5 hours of daylight, although visitors should plan strenuous activities for the cooler morning hours.
Best for:
- Swimming and relaxing in the sea
- Snorkeling and diving excursions
- Exploring the island early in the morning
- Enjoying warm tropical evenings
August – Very Hot, Humid and Tropical
- Average high: 93°F (34°C)
- Average low: 75°F (24°C)
- Rainfall: 3.53 inches (89.7 mm)
- Water temperature: 84°F (29°C)
- Daylight: 13 hours
August continues the hot, humid weather of summer on Isla Mujeres. Average highs reach 93°F (34°C), while nighttime temperatures remain near 75°F (24°C). The island’s beaches and turquoise waters are major attractions during this period, but the combination of heat and humidity can make prolonged outdoor activities tiring.
Rainfall averages approximately 3.53 inches (89.7 mm), with around seven rainy days. Brief tropical showers may interrupt outdoor plans, so it is useful to keep indoor alternatives available. The Caribbean Sea remains warm at approximately 84°F (29°C), ideal for swimming and other water activities. August falls within the Atlantic hurricane season, so travelers should monitor forecasts and any tropical weather advisories before and during their visit.
Best for:
- Swimming and beach relaxation
- Scuba diving and snorkeling
- Enjoying warm Caribbean waters
- Taking flexible trips with weather backup plans
September – Hot, Humid and Very Wet
- Average high: 91°F (33°C)
- Average low: 75°F (24°C)
- Rainfall: 7.00 inches (177.9 mm)
- Water temperature: 84°F (29°C)
- Daylight: 12.5 hours
September is one of the wettest months on Isla Mujeres. Average daytime temperatures remain around 91°F (33°C), while nighttime lows hover near 75°F (24°C). The weather is tropical and humid, with warm sea temperatures and a greater likelihood of heavy showers.
Rainfall averages approximately 7.00 inches (177.9 mm), occurring over about 11 days. September also falls within the peak period of Atlantic hurricane season, so tropical storms can occasionally affect travel plans. The sea averages around 84°F (29°C), but water activities should only be undertaken when local conditions are safe. Visitors benefit from flexible itineraries and checking weather forecasts regularly.
Best for:
- Enjoying quieter beaches when conditions permit
- Relaxing at hotels and spas
- Exploring local restaurants and island culture
- Taking advantage of indoor activities between showers
October – Hot, Humid and Rainiest
- Average high: 88°F (31°C)
- Average low: 73°F (23°C)
- Rainfall: 9.38 inches (238.3 mm)
- Water temperature: 83°F (28°C)
- Daylight: 11.5 hours
October is typically the wettest month on Isla Mujeres according to the supplied rainfall data. Average daytime temperatures reach approximately 88°F (31°C), while nighttime temperatures fall to around 73°F (23°C). Although temperatures are slightly lower than in midsummer, humidity and frequent rainfall can make conditions feel muggy.
Rainfall averages approximately 9.38 inches (238.3 mm), with around 13 rainy days. Heavy showers and tropical weather systems may affect boat trips, snorkeling excursions, and beach plans. The Caribbean Sea remains warm at about 83°F (28°C), but swimming and boating conditions depend on local weather and sea conditions. October is still within hurricane season, making travel insurance and flexible bookings worth considering.
Best for:
- Exploring museums and local cultural attractions
- Enjoying restaurants and relaxed indoor activities
- Visiting beaches during clear weather windows
- Planning flexible itineraries with weather alternatives
November – Warm, Humid and Gradually Drier
- Average high: 86°F (30°C)
- Average low: 70°F (21°C)
- Rainfall: 4.77 inches (121.1 mm)
- Water temperature: 81°F (27°C)
- Daylight: 11 hours
November brings slightly cooler temperatures and a gradual decrease in rainfall. Average highs reach around 86°F (30°C), while nighttime lows fall to approximately 70°F (21°C). The weather remains warm enough for beach vacations, and evenings can feel more comfortable than during the summer months.
Rainfall averages 4.77 inches (121.1 mm), with around eight rainy days. Although showers remain possible, conditions generally begin transitioning toward the drier winter season. Water temperatures average approximately 81°F (27°C), making swimming, snorkeling, and diving enjoyable when sea conditions are favorable. November is still part of the Atlantic hurricane season, so checking forecasts remains important.
Best for:
- Beach walks and swimming
- Exploring downtown Isla Mujeres
- Snorkeling and diving on calm days
- Enjoying warm weather with fewer extreme summer temperatures
December – Warm, Comfortable and Relatively Dry
- Average high: 82°F (28°C)
- Average low: 68°F (20°C)
- Rainfall: 3.30 inches (83.9 mm)
- Water temperature: 80°F (27°C)
- Daylight: 11 hours
December brings comfortable tropical weather to Isla Mujeres, making it an appealing destination for winter vacations. Average daytime temperatures reach approximately 82°F (28°C), while nighttime lows settle around 68°F (20°C). The pleasant temperatures are ideal for exploring beaches, enjoying outdoor dining, and taking boat excursions around the island.
Rainfall averages about 3.30 inches (83.9 mm), with approximately six rainy days. While occasional showers can occur, December is generally drier than the late-summer and autumn months. The Caribbean Sea averages around 80°F (27°C), providing comfortable conditions for swimming and snorkeling. With about 11 hours of daylight, visitors can enjoy plenty of sunshine and outdoor activities during their holiday.
Best for:
- Winter beach vacations
- Swimming and snorkeling
- Exploring the island’s beaches and restaurants
- Taking boat trips and enjoying sunset views
Isla Mujeres Weather by Month
| Month | Avg High °F (°C) | Avg Low °F (°C) | Rainfall (inches) | Water Temperature (°F) | Daylight (hours) |
|---|---|---|---|---|---|
| January | 82 (28) | 68 (20) | 4.01 | 79 | 11 |
| February | 84 (29) | 68 (20) | 2.23 | 79 | 11.5 |
| March | 86 (30) | 70 (21) | 1.69 | 79 | 12 |
| April | 90 (32) | 72 (22) | 1.49 | 80 | 12.5 |
| May | 91 (33) | 75 (24) | 3.40 | 82 | 13 |
| June | 91 (33) | 75 (24) | 5.92 | 83 | 13.5 |
| July | 93 (34) | 75 (24) | 3.08 | 84 | 13.5 |
| August | 93 (34) | 75 (24) | 3.53 | 84 | 13 |
| September | 91 (33) | 75 (24) | 7.00 | 84 | 12.5 |
| October | 88 (31) | 73 (23) | 9.38 | 83 | 11.5 |
| November | 86 (30) | 70 (21) | 4.77 | 81 | 11 |
| December | 82 (28) | 68 (20) | 3.30 | 80 | 11 |
20 FAQs About Isla Mujeres Weather
1. What is the weather like in Isla Mujeres year-round?
Isla Mujeres has a warm tropical climate throughout the year, with hot summers, mild winters, and warm Caribbean waters. Average daytime temperatures generally range from 82°F to 93°F (28°C to 34°C). Rainfall varies by season, with drier conditions typically occurring during winter and spring and wetter weather in late summer and fall.
2. What is the best month to visit Isla Mujeres?
February, March, and April are excellent months to visit Isla Mujeres because they generally offer warm temperatures, relatively little rainfall, and plenty of sunshine. These months are ideal for swimming, snorkeling, exploring the island, and relaxing on the beach.
3. What is the hottest month in Isla Mujeres?
July and August are typically among the hottest months, with average highs around 93°F (34°C). High humidity can make conditions feel even hotter, so visitors should stay hydrated and plan outdoor activities for the morning or late afternoon.
4. What is the coldest month in Isla Mujeres?
January and December are among the coolest months, with average highs around 82°F (28°C) and lows near 68°F (20°C). The weather remains warm compared with many winter destinations, making Isla Mujeres a popular choice for a tropical getaway.
5. When is the rainy season in Isla Mujeres?
The rainy season generally extends from around May through October, with rainfall often increasing in late summer and fall. September and October are particularly wet in the supplied climate data, so travelers visiting during these months should prepare for occasional heavy showers.
6. What is the driest month in Isla Mujeres?
April is the driest month in the supplied data, with approximately 1.49 inches (37.8 mm) of rainfall and around two rainy days. March is also relatively dry, making early spring a good time for beach activities and outdoor sightseeing.
7. What is the rainiest month in Isla Mujeres?
October is the rainiest month in the supplied data, averaging approximately 9.38 inches (238.3 mm) of rainfall and 13 rainy days. Heavy showers and tropical weather systems can affect boat tours and beach plans during this period.
8. What is the average temperature in Isla Mujeres in January?
January has an average high of 82°F (28°C) and an average low of 68°F (20°C). Days are generally warm and pleasant, while evenings can feel cooler. It is a good month for beach walks, sightseeing, and escaping cold winter weather.
9. Is Isla Mujeres hot in February?
Yes, February is warm and comfortable, with average highs around 84°F (29°C) and lows near 68°F (20°C). The relatively low rainfall and pleasant temperatures make it a great month for swimming, snorkeling, and exploring the island.
10. How hot is Isla Mujeres in March?
March has average daytime highs of approximately 86°F (30°C) and nighttime lows around 70°F (21°C). Rainfall is relatively low, and daylight increases to about 12 hours, providing excellent conditions for outdoor activities.
11. Is April a good time to visit Isla Mujeres?
Yes, April is an excellent time to visit Isla Mujeres. Average highs reach 90°F (32°C), rainfall is relatively low, and the Caribbean Sea is around 80°F (27°C). Visitors can enjoy beach days, snorkeling, diving, and boat excursions.
12. Is Isla Mujeres too hot in May?
May can feel hot and humid, with average highs around 91°F (33°C) and lows near 75°F (24°C). However, the warm sea makes swimming enjoyable. Travelers should wear sunscreen, drink plenty of water, and schedule strenuous activities during cooler hours.
13. What is the weather like in Isla Mujeres in summer?
Summer, from June through August, is hot and humid, with average highs around 91°F to 93°F (33°C to 34°C). Sea temperatures typically range from 83°F to 84°F (28°C to 29°C). Rain showers are possible, and this period falls within the Atlantic hurricane season.
14. Is September a good month to visit Isla Mujeres?
September can be challenging because of higher rainfall, humidity, and the risk of tropical storms. The supplied data shows approximately 7.00 inches (177.9 mm) of rain. Travelers who visit during this month should maintain flexible plans and monitor weather advisories.
15. Should I visit Isla Mujeres in October?
October can still offer warm temperatures, but it is typically one of the wettest months. Average highs are around 88°F (31°C), and rainfall reaches approximately 9.38 inches (238.3 mm) in the supplied data. It may suit travelers who are flexible about outdoor activities and prepared for changing weather.
16. What is the weather like in Isla Mujeres in December?
December is generally warm and comfortable, with average highs around 82°F (28°C) and lows near 68°F (20°C). Rainfall is lower than in September and October, and the sea averages approximately 80°F (27°C). It is a popular month for winter beach vacations.
17. What is the water temperature in Isla Mujeres throughout the year?
Caribbean Sea temperatures around Isla Mujeres are generally warm throughout the year, ranging approximately from 79°F to 84°F (26°C to 29°C). Water temperatures are typically warmest during summer and early fall, making swimming and snorkeling enjoyable in suitable sea conditions.
18. Can you swim in Isla Mujeres in winter?
Yes, swimming is generally comfortable in winter. Water temperatures are approximately 79°F to 80°F (26°C to 27°C) in December, January, and February. These warm conditions are suitable for swimming, snorkeling, and many other water activities, although wind and sea conditions can vary.
19. Does Isla Mujeres experience hurricanes?
Yes, Isla Mujeres can be affected by hurricanes and tropical storms during the Atlantic hurricane season, which officially runs from June 1 through November 30. September and October are particularly important months for monitoring forecasts. Visitors should check official advisories and review travel insurance and cancellation policies before traveling.
20. What should I pack for the weather in Isla Mujeres?
Pack lightweight clothing, swimwear, sandals, sunscreen, sunglasses, a hat, and breathable outfits for warm, humid weather. A light rain jacket or compact umbrella is useful during the rainy season. If visiting between June and November, monitor tropical weather forecasts and consider packing a waterproof bag for boat trips and beach excursions.
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