Seattle Weather by Month: A Complete Guide for Travelers
Seattle’s weather has a reputation that often scares travelers away—but the reality is far more nuanced and, for many, pleasantly surprising. Known as the Emerald City, Seattle enjoys mild temperatures year-round, dramatic seasonal changes, and plenty of outdoor-friendly days if you know when to visit.
This month-by-month guide will help you choose the best time to travel, pack appropriately, and plan activities with confidence.
Quick Overview of Seattle’s Climate
Seattle has a marine west coast climate, which means:
- Mild summers (rarely too hot)
- Cool, damp winters
- More drizzle than heavy rain
- Very little snow compared to other northern U.S. cities
🌧️ Fun fact: Seattle doesn’t get the most rain in the U.S.—it just rains lightly and often.
Seattle Weather by Month
| Month | Avg High | Avg Low | What to Expect |
|---|---|---|---|
| January | 47°F (8°C) | 37°F (3°C) | Cold, wet, quiet city, occasional snow |
| February | 50°F (10°C) | 38°F (3°C) | Cool, gray days, fewer tourists |
| March | 54°F (12°C) | 40°F (4°C) | Early spring signs, cherry blossoms |
| April | 59°F (15°C) | 43°F (6°C) | Spring blooms, mix of sun and rain |
| May | 65°F (18°C) | 48°F (9°C) | Mild, green, ideal for sightseeing |
| June | 70°F (21°C) | 53°F (12°C) | Long days, start of dry season |
| July | 76°F (24°C) | 57°F (14°C) | Warm, sunny, peak tourist season |
| August | 77°F (25°C) | 58°F (14°C) | Dry, warm, outdoor adventures |
| September | 72°F (22°C) | 53°F (12°C) | Mild weather, fewer crowds |
| October | 61°F (16°C) | 46°F (8°C) | Fall colors, cozy atmosphere |
| November | 52°F (11°C) | 41°F (5°C) | Rainy, short days, budget travel |
| December | 47°F (8°C) | 37°F (3°C) | Festive, chilly, possible snow |
January: Cool, Quiet, and Cozy
- Average High: 47°F (8°C)
- Average Low: 37°F (3°C)
- Rainfall: High
- Snow: Occasional, but not guaranteed
What to expect:
January is one of the coldest and wettest months. Skies are often gray, and daylight is limited.
Best for:
- Museum hopping
- Coffee shop culture
- Budget travelers (lower hotel prices)
Packing tips:
Waterproof jacket, warm layers, waterproof shoes.
February: Winter Calm with a Hint of Spring
- Average High: 50°F (10°C)
- Average Low: 38°F (3°C)
Rain continues, but days slowly get longer. Snow is still possible but uncommon.
Best for:
- Romantic getaways
- Fewer crowds at major attractions
March: Early Signs of Spring
- Average High: 54°F (12°C)
- Average Low: 40°F (4°C)
Cherry blossoms begin to appear late in the month, and rainfall starts to ease.
Best for:
- Botanical gardens
- Early hiking at lower elevations
April: Spring in Full Bloom
- Average High: 59°F (15°C)
- Average Low: 43°F (6°C)
April brings greener landscapes and brighter days, though showers still pop up.
Best for:
- Photography
- Walking tours
- Tulip festivals nearby (Skagit Valley)
May: One of the Best Months to Visit 🌸
- Average High: 65°F (18°C)
- Average Low: 48°F (9°C)
May marks the transition into Seattle’s famous dry season.
Best for:
- Outdoor sightseeing
- Ferry rides
- Mount Rainier visits (lower trails)
Why travelers love May:
Mild weather, fewer tourists than summer, and long daylight hours.
June: Start of Summer (and Sunshine)
- Average High: 70°F (21°C)
- Average Low: 53°F (12°C)
Rainfall drops significantly, and sunsets stretch past 9 p.m.
Best for:
- City exploration
- Outdoor dining
- Whale watching
July: Warm, Dry, and Peak Season ☀️
- Average High: 76°F (24°C)
- Average Low: 57°F (14°C)
- Rainfall: Very low
Seattle’s driest month, with clear skies and near-perfect temperatures.
Best for:
- Festivals and events
- Hiking and kayaking
- Beach visits (yes, Seattle has beaches!)
Downside:
Higher prices and larger crowds.
August: Summer Continues
- Average High: 77°F (25°C)
- Average Low: 58°F (14°C)
August is similar to July, though wildfire smoke can occasionally affect air quality.
Best for:
- Mount Rainier and Olympic National Park
- Outdoor concerts
September: Mild, Sunny, and Less Crowded 🍁
- Average High: 72°F (22°C)
- Average Low: 53°F (12°C)
Often considered Seattle’s secret best month.
Best for:
- Sightseeing without crowds
- Comfortable hiking
- Wine tasting in nearby regions
October: Autumn Colors and Cozy Vibes
- Average High: 61°F (16°C)
- Average Low: 46°F (8°C)
Rain returns, but fall foliage adds charm to parks and neighborhoods.
Best for:
- Scenic drives
- Halloween events
- Coffee and food tours
November: Rainy and Atmospheric
- Average High: 52°F (11°C)
- Average Low: 41°F (5°C)
One of the rainiest months, with short days and moody skies.
Best for:
- Budget travel
- Indoor attractions
- Holiday markets starting late in the month
December: Festive and Chilly 🎄
- Average High: 47°F (8°C)
- Average Low: 37°F (3°C)
Expect holiday lights, occasional frost, and the possibility of snow.
Best for:
- Christmas events
- Ski trips in nearby mountains
- Cozy winter city breaks
20 FAQs about Seattle Weather
1. What is the best month to visit Seattle?
The best months to visit Seattle are July through September, when the weather is warm, dry, and sunny.
2. What is the rainiest month in Seattle?
November is typically the rainiest month, with frequent drizzle and overcast skies.
3. Does it rain every day in Seattle?
No. Seattle has many cloudy or drizzly days, but it does not rain heavily every day.
4. What is the coldest month in Seattle?
January is usually the coldest month, with average lows around 37°F (3°C).
5. Does Seattle get snow?
Yes, but snow is infrequent and light, usually occurring between December and February.
6. What is the warmest month in Seattle?
August is often the warmest month, with average highs around 77°F (25°C).
7. When is Seattle’s dry season?
Seattle’s dry season typically runs from June through September.
8. Is summer in Seattle hot?
Seattle summers are mild and comfortable, rarely exceeding 85°F (29°C).
9. What should I wear in Seattle?
Layered clothing and a light waterproof jacket are recommended year-round.
10. Is May a good time to visit Seattle?
Yes. May offers mild temperatures, blooming flowers, and fewer crowds than summer.
11. What is Seattle like in winter?
Winter is cool, wet, and cozy, ideal for museums, coffee shops, and indoor activities.
12. Are spring months rainy in Seattle?
Spring months like March and April still see rain, but less than winter.
13. Is September a good time to travel to Seattle?
Yes. September has pleasant weather, fewer tourists, and lower prices.
14. How humid is Seattle?
Seattle has moderate humidity, making temperatures feel comfortable year-round.
15. Does Seattle have extreme weather?
Extreme weather is rare; Seattle is known for its mild climate.
16. Are Seattle winters gloomy?
Winters can be gray and cloudy, but many travelers enjoy the moody, cozy atmosphere.
17. What month has the most sunshine in Seattle?
July typically has the most sunshine and clearest skies.
18. Can I hike near Seattle year-round?
Yes, but best hiking conditions are from late spring through early fall.
19. Is Seattle weather good for outdoor activities?
Yes, especially from June to September when rain is minimal.
20. Do I need an umbrella in Seattle?
Most locals prefer rain jackets over umbrellas due to light, frequent drizzle.
Final Tips for Travelers
- 🌦️ Always pack layers—weather can change quickly
- ☔ Don’t overpack umbrellas; locals prefer rain jackets
- 🌅 Take advantage of long summer daylight hours
- 🏔️ Check mountain weather separately—it can differ from the city
