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When is the best time to visit San Sebastian?
In general the best time to visit San Sebastian is probably August, when the weather is usually great. The hottest months are July, August, September, while the coldest months are January, February, December.
But ultimately the best time to visit depends on what you want to do:
- In general, it’s pleasant to walk and do outdoor activities during May - October.
- If you want to avoid wet weather, then your choice is June, July, August with the lowest chance of rain.
Average weather in San Sebastian in different months
This is the average weather in San Sebastian for each month based on historic data:
In January, February, March, April, May, June, July, August, September, October, November, December the weather is average. Expect around 208 rainy days, and the precipitation amounts to approximately 191 mm in November.
Climate in San Sebastian
Here is the detailed breakdown of the climate in San Sebastian for each month:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +23°C | +26°C | +28°C | +31°C | +36°C | +41°C | +41°C | +39°C | +37°C | +31°C | +29°C | +24°C |
| Average Maximum Temperature | |||||||||||
| +12°C | +13°C | +15°C | +16°C | +19°C | +21°C | +23°C | +24°C | +23°C | +20°C | +15°C | +13°C |
| Minimum Temperature | |||||||||||
| -6°C | -5°C | -5°C | +1°C | +4°C | +9°C | +12°C | +12°C | +7°C | +2°C | -2°C | -6°C |
| Avg. water temperature | |||||||||||
| +14°C | +13°C | +14°C | +16°C | +19°C | +22°C | +23°C | +23°C | +23°C | +21°C | +18°C | +16°C |
| Humidity, % | |||||||||||
| 77 | 75 | 74 | 76 | 78 | 80 | 80 | 80 | 78 | 77 | 78 | 77 |
| Rain, mm | |||||||||||
| 161 | 130 | 129 | 140 | 130 | 102 | 93 | 102 | 109 | 144 | 191 | 161 |
| Snow, mm | |||||||||||
| 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Average wind speed, m/s | |||||||||||
| 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 2 | 2 | 3 | 3 |
| Sunny Days | |||||||||||
| 4 | 4 | 5 | 4 | 4 | 4 | 4 | 5 | 6 | 6 | 5 | 5 |
| Cloud Days | |||||||||||
| 8 | 6 | 7 | 6 | 6 | 8 | 9 | 8 | 7 | 7 | 6 | 8 |
| Rainy Days | |||||||||||
| 18 | 16 | 18 | 19 | 20 | 17 | 16 | 16 | 15 | 17 | 18 | 18 |
| Snowy Days | |||||||||||
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Average Temperature
Here are the average maximum and minimum temperatures in San Sebastian during the whole year:
The hottest month in San Sebastian is August with average maximum temperature going up to +24°C. The coldest month is January with the lowest temperatures of +7°C.
Water temperature
Here are the water temperatures in San Sebastian during the whole year:
San Sebastian achieves its warmest water temperature in August, where the average sea temperature goes up to +21°C. Coldest water temperature is in February with +12°C in average.
When can you swim in San Sebastian?
You can swim in San Sebastian from August to August:
- In August the water is comfortable (21°C - 25°C);
Humidity
The temperature feels different depending on humidity. Here is how humidity in San Sebastian looks throughout the year, in %:
The most humid month in San Sebastian is August with average humidity going up to 80%. The least humid month is March with an average humidity of 74%.
Rain
Amount of rainfall in mm. in San Sebastian during the whole year based on historical data:
The sunniest and driest month is September with approximately 6 sunny days and a total precipitation of around 109 mm. The rainiest and wettest month is November with approximately 18 rainy days and 191 mm of total precipitation.
Snow
Amount of snow in mm. in San Sebastian during the whole year based on historical data:
The snowiest month is February with approximately 1 snowy days.
FAQ
Frequently asked questions about the weather in San Sebastian:
What is the hottest month in San Sebastian?
The hottest month in San Sebastian is August with average maximum temperature of +24°C.
What is the coldest month in San Sebastian?
The coldest month in San Sebastian is January with minimum temperatures of +7°C.
Is San Sebastian worth visiting in winter?
Winter in San Sebastian could be a good time to visit, as the weather is generally ok.
When does it rain the least in San Sebastian?
if you're looking to visit San Sebastian when it rains the least, you should plan your trip for November, December, January. During this time, rainfall is rare with the driest month being July with only 93 mm of rain.
Other cities in Spain
Check out the weather for other cities in Spain.
Monthly weather in San Sebastian
Source of the data
For this page, we’ve looked at the typical weather in San Sebastian, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
