San Sebastian Spain Weather by Month
San Sebastián, Spain, has a mild oceanic climate with comfortable temperatures throughout the year and rainfall in every season. Summers are warm but rarely excessively hot, while autumn and winter tend to be wetter. Based on the data provided, August is the warmest month, while November is the wettest month.
San Sebastian Spain Weather by Month
You can click the image below to view the full-size weather chart for San Sebastian.
January – Cool Winter Days and Moderate Rainfall
Average low: 45°F (7°C)
Average high: 54°F (12°C)
Rainfall: 6.4 inches (162 mm)
Daylight: 9.5 hours
January is one of the coolest months in San Sebastián, with average temperatures ranging from 45°F at night to 54°F during the day. The month receives around 6.4 inches of rainfall, making winter quite wet.
With only about 9.5 hours of daylight, January has relatively short days. Visitors should bring warm layers and a waterproof jacket, especially when exploring the city on foot.
Best for:
- Quiet sightseeing
- Museums and galleries
- Pintxos and local cuisine
- Travelers who enjoy cool weather
February – Mild Winter Weather and Frequent Rain
Average low: 45°F (7°C)
Average high: 55°F (13°C)
Rainfall: 4.8 inches (123 mm)
Daylight: 10.5 hours
February remains mild but wet in San Sebastián, with average temperatures ranging from 45°F at night to 55°F during the day. Rainfall averages around 4.8 inches, so wet weather is still common.
Daylight increases to about 10.5 hours, giving visitors more time to explore the Old Town, museums, restaurants, and coastal areas.
Best for:
- Pintxos tours
- Museums and galleries
- Quiet city walks
- Off-season travel
March – Mild Spring Days and Moderate Rainfall
Average low: 48°F (9°C)
Average high: 59°F (15°C)
Rainfall: 4.9 inches (125 mm)
Daylight: 12 hours
March brings milder spring weather to San Sebastián, with average temperatures ranging from 48°F at night to 59°F during the day. The city receives around 4.9 inches of rainfall during the month.
With approximately 12 hours of daylight, March offers increasingly favorable conditions for sightseeing and exploring the coastline.
Best for:
- Spring sightseeing
- Coastal walks
- Photography
- Exploring outdoor attractions
April – Pleasant Spring Weather and Moderate Rain
Average low: 50°F (10°C)
Average high: 61°F (16°C)
Rainfall: 5.2 inches (132 mm)
Daylight: 13.5 hours
April is a pleasant spring month in San Sebastián, with average temperatures ranging from 50°F at night to 61°F during the day. Rainfall reaches around 5.2 inches, so visitors should still expect some wet days.
The city enjoys about 13.5 hours of daylight, providing plenty of time for walking tours, sightseeing, and enjoying the waterfront.
Best for:
- Walking tours
- Coastal sightseeing
- Outdoor attractions
- Spring vacations
May – Mild Weather and Longer Days
Average low: 54°F (12°C)
Average high: 66°F (19°C)
Rainfall: 4.9 inches (125 mm)
Daylight: 14.5 hours
May brings warmer temperatures to San Sebastián, with average lows of 54°F and highs of 66°F. Rainfall remains moderate at around 4.9 inches, but conditions are generally comfortable for exploring the city.
With approximately 14.5 hours of daylight, May offers long days for enjoying beaches, parks, restaurants, and the surrounding coastline.
Best for:
- Outdoor sightseeing
- Coastal walks
- Food and cultural trips
- Mild-weather travel
June – Warm Summer Days and Less Rain
Average low: 59°F (15°C)
Average high: 70°F (21°C)
Rainfall: 3.8 inches (98 mm)
Daylight: 15.5 hours
June marks the beginning of warmer summer weather in San Sebastián. Average temperatures range from 59°F at night to 70°F during the day, creating comfortable conditions for outdoor activities.
Rainfall decreases to around 3.8 inches, while daylight reaches approximately 15.5 hours. June is an excellent month for exploring the beaches and coastline.
Best for:
- Beach visits
- Hiking
- Coastal walks
- Long summer days
July – Warm Days and the Lowest Rainfall
Average low: 63°F (17°C)
Average high: 73°F (23°C)
Rainfall: 3.5 inches (88 mm)
Daylight: 15 hours
July is one of the warmest and driest months in San Sebastián. Average temperatures range from 63°F at night to 73°F during the day. The month receives approximately 3.5 inches of rainfall, the lowest amount in the data provided.
With about 15 hours of daylight, July is ideal for spending time outdoors and enjoying the city’s beaches and coastal scenery.
Best for:
- Beach days
- Swimming
- Outdoor dining
- Coastal excursions
August – Warmest Month and Comfortable Summer Weather
Average low: 64°F (18°C)
Average high: 75°F (24°C)
Rainfall: 4.3 inches (109 mm)
Daylight: 14 hours
August is the warmest month in San Sebastián, with average temperatures ranging from 64°F at night to 75°F during the day. The warm but moderate temperatures are well suited to beach activities and outdoor sightseeing.
Rainfall increases slightly to around 4.3 inches, while the city still enjoys approximately 14 hours of daylight.
Best for:
- Beach vacations
- Swimming
- Outdoor dining
- Summer festivals
September – Warm Early Autumn Days and Moderate Rainfall
Average low: 61°F (16°C)
Average high: 72°F (22°C)
Rainfall: 4.4 inches (111 mm)
Daylight: 12.5 hours
September remains pleasantly warm in San Sebastián, with average temperatures ranging from 61°F at night to 72°F during the day. Rainfall averages around 4.4 inches.
Daylight decreases to about 12.5 hours, but there is still plenty of time for beaches, coastal walks, and sightseeing.
Best for:
- Beach activities
- Coastal walks
- Food tours
- Early autumn travel
October – Mild Autumn Weather and Increasing Rainfall
Average low: 57°F (14°C)
Average high: 68°F (20°C)
Rainfall: 6.0 inches (152 mm)
Daylight: 11 hours
October brings mild autumn conditions to San Sebastián, with average temperatures ranging from 57°F at night to 68°F during the day. Rainfall increases to around 6.0 inches, making the month noticeably wetter than summer.
With approximately 11 hours of daylight, October still provides good opportunities for sightseeing, although a waterproof jacket is recommended.
Best for:
- City sightseeing
- Food experiences
- Museums and galleries
- Autumn photography
November – Cool Weather and the Highest Rainfall
Average low: 50°F (10°C)
Average high: 59°F (15°C)
Rainfall: 7.8 inches (198 mm)
Daylight: 10 hours
November is the wettest month in San Sebastián, receiving around 7.8 inches of rainfall. Average temperatures range from 50°F at night to 59°F during the day, making it cool but generally mild compared with many European destinations.
With only about 10 hours of daylight, November has shorter days. Visitors should be prepared for frequent rain with waterproof clothing and shoes.
Best for:
- Pintxos experiences
- Museums and galleries
- Indoor attractions
- Travelers who don’t mind rainy weather
December – Cool Winter Weather and Heavy Rain
Average low: 46°F (8°C)
Average high: 55°F (13°C)
Rainfall: 5.9 inches (151 mm)
Daylight: 9 hours
December is cool and wet in San Sebastián, with average temperatures ranging from 46°F at night to 55°F during the day. The city receives around 5.9 inches of rainfall during the month.
Daylight falls to about 9 hours, the shortest amount of the year. Visitors should pack warm layers and waterproof clothing when exploring the city.
Best for:
- Winter city breaks
- Pintxos and local cuisine
- Museums and galleries
- Holiday atmosphere
San Sebastian Weather by Month Overview
| Month | Avg High | Avg Low | Rainfall | Daylight |
|---|---|---|---|---|
| January | 54°F (12°C) | 45°F (7°C) | 6.4 in (162 mm) | 9.5 hrs |
| February | 55°F (13°C) | 45°F (7°C) | 4.8 in (123 mm) | 10.5 hrs |
| March | 59°F (15°C) | 48°F (9°C) | 4.9 in (125 mm) | 12 hrs |
| April | 61°F (16°C) | 50°F (10°C) | 5.2 in (132 mm) | 13.5 hrs |
| May | 66°F (19°C) | 54°F (12°C) | 4.9 in (125 mm) | 14.5 hrs |
| June | 70°F (21°C) | 59°F (15°C) | 3.8 in (98 mm) | 15.5 hrs |
| July | 73°F (23°C) | 63°F (17°C) | 3.5 in (88 mm) | 15 hrs |
| August | 75°F (24°C) | 64°F (18°C) | 4.3 in (109 mm) | 14 hrs |
| September | 72°F (22°C) | 61°F (16°C) | 4.4 in (111 mm) | 12.5 hrs |
| October | 68°F (20°C) | 57°F (14°C) | 6.0 in (152 mm) | 11 hrs |
| November | 59°F (15°C) | 50°F (10°C) | 7.8 in (198 mm) | 10 hrs |
| December | 55°F (13°C) | 46°F (8°C) | 5.9 in (151 mm) | 9 hrs |
20 FAQs About San Sebastian Weather
1. What is the weather like in San Sebastian, Spain?
San Sebastián has a mild oceanic climate with relatively cool summers and mild winters. Rainfall occurs throughout the year, with autumn and winter generally being wetter than summer.
2. What is the warmest month in San Sebastian?
August is the warmest month, with an average high of 75°F (24°C) and an average low of 64°F (18°C).
3. What is the coldest month in San Sebastian?
January is one of the coolest months, with an average high of 54°F (12°C) and an average low of 45°F (7°C).
4. What is the wettest month in San Sebastian?
November is the wettest month, receiving approximately 7.8 inches (198 mm) of rainfall.
5. What is the driest month in San Sebastian?
July is the driest month, with about 3.5 inches (88 mm) of rainfall.
6. Does it rain a lot in San Sebastian?
Yes. San Sebastián receives rainfall throughout the year. November is particularly wet, while July and June tend to have lower rainfall totals.
7. What is San Sebastian weather like in January?
January is cool and wet, with average temperatures between 45°F (7°C) and 54°F (12°C). The month receives around 6.4 inches (162 mm) of rainfall.
8. What is San Sebastian weather like in summer?
Summer is generally warm and comfortable. Average highs range from 70°F (21°C) in June to 75°F (24°C) in August, making summer ideal for beaches, walking, and outdoor activities.
9. Is San Sebastian hot in August?
No, August is warm rather than extremely hot. The average high is around 75°F (24°C), while the average low is approximately 64°F (18°C).
10. Is San Sebastian good to visit in spring?
Yes. Spring offers mild temperatures and increasing daylight. April and May have average highs of 61°F (16°C) and 66°F (19°C) respectively, making them comfortable for sightseeing.
11. What is San Sebastian weather like in May?
May is mild, with an average high of 66°F (19°C) and an average low of 54°F (12°C). It receives around 4.9 inches (125 mm) of rainfall and has approximately 14.5 hours of daylight.
12. What is San Sebastian weather like in June?
June is warm and relatively dry, with an average high of 70°F (21°C) and a low of 59°F (15°C). It also has the longest daylight period, at around 15.5 hours.
13. Is September a good month to visit San Sebastian?
Yes. September remains warm, with an average high of 72°F (22°C). It is a good month for beaches, coastal walks, food tours, and sightseeing.
14. What is San Sebastian weather like in October?
October is mild but wetter than summer. Average temperatures range from 57°F (14°C) to 68°F (20°C), with approximately 6.0 inches (152 mm) of rainfall.
15. What is San Sebastian weather like in November?
November is cool and very wet. Average temperatures range from 50°F (10°C) to 59°F (15°C), while rainfall reaches approximately 7.8 inches (198 mm).
16. Does San Sebastian get snow?
Snow is uncommon in San Sebastián because of its mild coastal climate. Winter temperatures generally remain well above freezing, although occasional cold spells can occur.
17. How many hours of daylight does San Sebastian get?
Daylight varies significantly by season. San Sebastián gets about 9 hours of daylight in December and up to 15.5 hours in June.
18. What is the best month to visit San Sebastian for good weather?
July, August, and September are among the best months for warm weather and outdoor activities. July has the lowest rainfall in the provided data, while August has the highest average temperatures.
19. What should I pack for San Sebastian weather?
Pack layers, comfortable walking shoes, and a waterproof jacket. Even during summer, a light layer can be useful in the evening, while waterproof clothing is especially important during autumn and winter.
20. When is the best time to visit San Sebastian?
The best time depends on your preferences. June through September are ideal for warm weather, beaches, and outdoor activities. May and October are good choices for mild temperatures and sightseeing, while winter is better suited to travelers who enjoy quieter attractions, food, and indoor activities.
