San Sebastián (Spain) is a place with a hot climate. The day temperatures range from 12.5 °C (54.5 °F) in January to 25.6 °C (78.1 °F) in August. The driest month is July with just 10 days of rain, on the contrary, the month when it rains the most is April with 15 days of rain. Sea temperatures are in the following range: 12.2 °C (53.9 °F) in February to 21.9 °C (71.4 °F) in August. The highest night temperatures could be experienced in August with 16.9 °C (62.4 °F), the lowest in January with 5.8 °C (42.4 °F).

January weather

The minimum of the day temperature can be noticed, with its value being 12.5 °C (54.5 °F) in San Sebastián, while the sea temperature descents similarly to the previous month, with its value of 12.7 °C (54.8 °F). The number of rainy days starts to rise, its value is 14 days, while the rainfall amount descents similarly to the previous month. The minimum of the night temperature is observable, with its value of 5.8 °C (42.4 °F).

February weather

The sea temperature reaches its minimum, with its value being 12.2 °C (53.9 °F) in San Sebastián, while the beginning of the rise of the day temperature could be noticed, its value is 13.2 °C (55.8 °F). The number of rainy days starts to descent, with its value of 14 days, while the descent of the rainfall amount can be observed, with its value of 96 mm (3.80 in). The beginning of the rise of the number of sun hours (without clouds) could be noticed, the value of this measure is 4 hours.

March weather

The rise of the day temperature can be observed, with its value of 16.0 °C (60.8 °F) in San Sebastián, while the beginning of the rise of the night temperature could be noticed in March. The number of rainy days continues to descent, the value of this measure is 13 days. The number of sun hours (without clouds) continues to rise, the value of this measure is 4 hours. The humidity is on its minimum, with its value being 72 %.

April weather

The rise of the day temperature can be observed, its value is 17.0 °C (62.6 °F) in San Sebastián, while the sea temperature starts to rise, its value is 13.3 °C (56.0 °F). The maximum of the number of rainy days can be noticed, with its value of 15 days, while the rainfall amount rise's start could be observed in this month. The night temperature continues to rise, its value is 8.6 °C (47.5 °F).

May weather

The day temperature rises similarly to the previous month, the value of this measure is 20.1 °C (68.2 °F) in San Sebastián, and the rise of the sea temperature can be observed as well, with its value of 15.6 °C (60.0 °F). The beginning of the descent of the number of rainy days could be noticed, with its value of 13 days, and the rainfall amount descent's start could be observed too in May. The number of sun hours (without clouds) starts to rise, with its value of 6 hours. The night temperature rises similarly to the previous month, the value of this measure is 12.0 °C (53.6 °F).

June weather

The rise of the day temperature can be observed, its value is 23.2 °C (73.8 °F) in San Sebastián, and the sea temperature continues to rise too, the value of this measure is 18.6 °C (65.4 °F). The tourist season slowly starts. The number of rainy days descents similarly to the previous month, the value of this measure is 11 days, and the descent of the rainfall amount can be observed as well. The night temperature continues to rise, with its value being 14.8 °C (58.6 °F).

July weather

The day temperature continues to rise in San Sebastián, and the rise of the sea temperature can be observed too, the value of this measure is 21.0 °C (69.8 °F). The tourist season is close to its peak this month. The number of rainy days reaches its minimum, the value of this measure is 10 days, and the minimum of the rainfall amount is observable as well. The number of sun hours (without clouds) reaches its maximum, its value is 7 hours.

August weather

The day temperature is on its maximum, with its value being 25.6 °C (78.1 °F) in San Sebastián, and the maximum of the sea temperature is observable as well in this month. The rainfall amount starts to rise, with its value of 83 mm (3.28 in). There is pending tourist season in August. The wind speed reaches its minimum in this month. The maximum of the night temperature can be noticed, the value of this measure is 16.9 °C (62.4 °F).

September weather

The tourist season continues in San Sebastián. The day temperature starts to descent, and the sea temperature descent's start could be observed as well. The rainfall amount rises similarly to the previous month, with its value of 94 mm (3.69 in). The night temperature starts to descent, with its value being 15.1 °C (59.2 °F). The number of sun hours (without clouds) descents similarly to the previous month, with its value of 6 hours.

October weather

The descent of the day temperature can be observed, with its value being 20.7 °C (69.3 °F) in San Sebastián, and the descent of the sea temperature can be observed as well, with its value of 18.0 °C (64.4 °F). The beginning of the rise of the number of rainy days could be noticed, its value is 12 days, while the rainfall amount continues to rise, with its value being 132 mm (5.20 in). The descent of the night temperature can be observed, with its value of 12.1 °C (53.8 °F). The descent of the number of sun hours (without clouds) can be observed, the value of this measure is 5 hours.

November weather

The day temperature continues to descent, the value of this measure is 15.7 °C (60.3 °F) in San Sebastián, and the descent of the sea temperature can be observed as well, its value is 15.6 °C (60.0 °F). The number of rainy days rises similarly to the previous month, its value is 14 days, while the maximum of the rainfall amount can be noticed, with its value being 153 mm (6.04 in). The descent of the night temperature can be observed, with its value of 8.5 °C (47.3 °F). The descent of the number of sun hours (without clouds) can be observed, its value is 3 hours.

December weather

The day temperature descents similarly to the previous month, the value of this measure is 13.2 °C (55.8 °F) in San Sebastián, and the sea temperature descents similarly to the previous month too. The number of rainy days descent's start could be observed, the value of this measure is 13 days, and the rainfall amount descent's start could be observed too, its value is 129 mm (5.08 in). The number of sun hours (without clouds) is on its minimum in December. The maximum of the wind speed can be noticed, with its value of 4.3.

FAQs

How many sunny hours can I expect in February in San Sebastián?

In San Sebastián in February, you can expect around 4 hours of sunshine.

How windy is it in March in San Sebastián?

An average wind scale that can be expected in San Sebastián in March is 4.2.

What is the night temperature in San Sebastián in April?

The average night temperature in San Sebastián in April is 8.6 °C (47.5 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating.

Is May part of the dry season in San Sebastián?

No, May is not a dry month in San Sebastián, expect rain approximately 13 days in a month.

How many rainy days can I expect in San Sebastián in June?

In June in San Sebastián, we can expect 11 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.6 days of the week, or in general - 37 % days.

What is the sea temperature in San Sebastián in July?

The temperature of the sea in July in San Sebastián is 21.0 °C (69.8 °F). The sea at this temperature is quite cold, but it is already possible to stay in it for a long time and it is pleasantly refreshing on hot, steamy days.

Is August part of the wet season in San Sebastián?

No, there is no wet season in San Sebastián in August - you can expect 10 days of rain during the month.

Are there good conditions to visit in September in San Sebastián?

There are good conditions for visiting in September in San Sebastián. There are some people, who may feel a slight chill at 23.6 °C (74.5 °F), but others will feel perfectly fine. A sea temperature of 20.5 °C (68.9 °F) can seem colder to some, but others will call it refreshing. The temperature of 15.1 °C (59.2 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.

What temperature can I expect during the day in San Sebastián in October?

In San Sebastián in October, the average daily temperatures will be 20.7 °C (69.3 °F). A comfortable temperature for most people, where it is neither too cold nor too hot, and a large number of activities can be carried out comfortably, including sunbathing by the water. Lighter clothing will be suitable - shorts, skirts, t-shirts, jackets; a light sweater and long trousers may also be useful.

What is the humidity in San Sebastián in November?

Humidity in November in San Sebastián is 76 %.