What’s the climate like in San Sebastián?
The current climate of San Sebastián features average monthly temperatures ranging from highs of 26°C during the day to lows of 13°C. The average yearly temperature is around 19°C. At night, temperatures in the colder months average around 5°C and in the warmer months around 17°C.
The highest temperature recorded in San Sebastián in recent years was 41°C in August 2023. The lowest daytime temperature recorded was 3°C in November 2021.
On average, San Sebastián receives 1067 mm of precipitation each year. For comparison, London gets 701 mm of precipitation annually.
Curious about the climate in other parts of Spain? Check out the weather and climate in places like Ibiza, Majorca, Tenerife, or have a look at other destinations in Spain.
Best time to visit San Sebastián?
The best time to visit San Sebastián for sunny weather is May through October. During this period, you'll have good temperatures and not too much rain, making it a great time to visit San Sebastián. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
Climate Table of San Sebastián
The climate table of San Sebastián shows the average temperatures, precipitation, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 13 | 15 | 16 | 17 | 19 | 22 | 24 | 26 | 23 | 21 | 15 | 16 |
| Temp. min (°C) | 6 | 6 | 8 | 9 | 12 | 15 | 17 | 17 | 15 | 13 | 7 | 8 |
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| Precipitation (mm) | 168 | 160 | 95 | 50 | 56 | 61 | 48 | 40 | 77 | 95 | 81 | 136 |
| UV Index | 3 | 4 | 6 | 7 | 7 | 8 | 7 | 7 | 6 | 5 | 4 | 3 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 19°C
- Highest temperature: 26°C in August
- Lowest temperature: 13°C in January
- Precipitation: 1067 mm per year, averaging 89 mm per month
- Driest months: 40 mm in August, 48 mm in July and 50 mm in April
- Wettest months: 168 mm in January, 160 mm in February and 136 mm in December
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Table of Contents
Average Temperature per Month in San Sebastián
This graph shows the average maximum temperatures per month in San Sebastián, Spain. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in San Sebastián
This graph shows how much precipitation San Sebastián, Spain, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average UV Index per Month in San Sebastián
This graph shows the average UV index per month in San Sebastián, Spain. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in San Sebastián
This graph shows the average yearly temperature in San Sebastián, Spain. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in San Sebastián
This chart shows the total yearly precipitation in San Sebastián, Spain, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Weather experiences in San Sebastián
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Average Weather in San Sebastián by Month
Click on a month below to see detailed weather info for San Sebastián. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
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