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Best
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Best
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Best
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Best
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Tan
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Tan
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Tan
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Tan
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Sea
15°
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Sea
13°
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Sea
14°
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Sea
15°
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Sea
18°
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Sea
23°
Swim
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Sea
24°
Swim
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Sea
26°
Swim
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Sea
23°
Swim
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Sea
20°
Swim
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Sea
20°
Swim
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Sea
16°
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The annual average maximum daily temperature is 18°C (64.4°F) which is not that warm but sunbathing may be possible on some clear days. The annual average water temperature is typically 18.9°C (66.0°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water. Annually there are on average 12.9 days of rain per month and 5.6 hours of sun per day.
The best months to visit San Sebastian are June, July, August, September, for the best beach weather, the most sunshine and optimal sunbathing and swimming conditions with the least chance of rain.
The weather is warm enough for sunbathing in the months from June to September when the maximum temperature reaches above 22°C (72°F)
The sea is best for swimming between June and November when the sea temperature is above the average 19°C (66°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water.
No, you can't sunbathe in San Sebastian all year round. Some months are too cold for sunbathing, however you might enjoy other beach activities such as taking a walk, going hiking along trails or just enjoying the scenery.
The weather is warm enough for sunbathing in the months from June to September when the maximum temperature reaches above 22°C (72°F)
More info about the annual temperatures and sunshine.
No, you can't swim in San Sebastian all year round.
The warmest sea water temperatures in San Sebastian are found in August when they peak at 26°C (78°F) and lowest in February when they dip to 13°C (56°F).
The sea temperature is above average for swimming between June and November when the sea temperature is above 19°C (66°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water.
For very comfortable swimming conditions try swimming in the months from June to September when the sea temperature is above 22°C (72°F)
More info about the annual sea temperatures
The hottest month in San Sebastian is August when the average maximum temperature is nice and warm and makes sunbathing pleasant on clear days 24°C (76°F), average temperature is 21°C (69°F) and average minimum temperature is 18°C (64°F).
More info about the annual temperatures and sunshine.
The coolest month in San Sebastian is February when the average maximum temperature is 12°C (54°F), average temperature is 9°C (47°F) and average minimum temperature is 5°C (42°F).
More info about the annual temperatures and sunshine
The driest month in San Sebastian is September with 0.1cm (0.0inches) of rain and the least days of rain with 10.1 days with some rain, a pretty wet time to visit the beach.
More info about the annual rainfall
The coldest sea water temperatures in San Sebastian are found in February when they dip to 13°C (56°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea.
More info about the annual sea temperatures.
The warmest sea water temperatures in San Sebastian are found in August when they peak at 26°C (78°F) which is warm and pleasant for relaxing and swimming for long periods.
More info about the annual sea temperatures.
The most humid month in San Sebastian is July with a dew point (an indicator of humidity) of 18°C (64°F) which is OK for most but slightly uncomfortable for some.
More info about the annual humidity.
The least humid month in San Sebastian is February with a dew point of 6°C (43°F) which is a bit dry for some.
More info about the annual humidity.
The most windy month in San Sebastian is February when the average maximum windspeed is 21KM/H (13MPH) and the average wind speed is 10KM/H (6MPH).
More info about the annual wind conditions.
The hottest month in San Sebastian is August when the average maximum temperature is 24°C (76°F), average temperature is 21°C (69°F) and average minimum temperature is 18°C (64°F).
The coolest month in San Sebastian is February when the average maximum temperature is 12°C (12°F), average temperature is 9°C (47°F) and average minimum temperature is 5°C (42°F).
The longest days in San Sebastian are in June, with an average of 15.4 hours of daylight per day. December has the shortest days with an average of 9 hours of daylight per day.
The sunniest days in San Sebastian are in July which has the most hours of sunshine per day. The sunshine percentage is 60% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 9.0 hours of sunshine per day.
December has the least sunshine. The sunshine percentage is 28% making it extremely gloomy and overcast with little sunshine. There are 2.5 hours of sunshine per day.
The ultraviolet index is the highest in July when it reaches 9.3 and lowest in December when it reaches 1.4.
An ultraviolet index reading of 8 to 10 indicates a very high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 15 minutes. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.
The warmest sea water temperatures in San Sebastian are found in August when they peak at 26°C (78°F) and lowest in February when they dip to 13°C (56°F).
The sea is best for swimming between June and November when the temperature is above 19°C (66°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water.
The wettest month in San Sebastian is December with 2.3cm (0.9inches) of rain and April has the most days of rain with 15.3 days with some rain, a wet time to visit the beach.
The driest month in San Sebastian is September with 0.1cm (0.0inches) of rain and the least days of rain with 10.1 days with some rain, a pretty wet time to visit the beach.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
