Temperatures in August
It's warm in August in San Sebastián with an average temperature of 26°C. Temperatures this month range from a low of 24°C to a high of 28°C. At night, you can expect temperatures between 16°C and 18°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for San Sebastián in August. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of August
The month of August starts in San Sebastián with warm temperatures, averaging around 26°C during the day and nights close to 17°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Since temperatures can differ between day and night, it’s a good idea to dress in layers.
Mid-August
By mid-August, the average daytime temperature stays the same at 26°C, with nights close to 17°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
Temperatures vary between day and night, so it’s smart to wear layers.
End of August
By the end of August, the average daytime temperature in San Sebastián will be around 26°C, with nights close to 17°C. A shower might show up, but overall the weather will be dry and sunny.
As it gets cooler in the evening, it’s best to wear layers.
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Precipitation in August
In August, there is an average of 40 mm of precipitation, spread over 7 days. The wind speed is around 4 Bft, mostly coming from the South.
The average precipitation chance is 22% per day this month.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in August for San Sebastián. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
San Sebastián in August |
London | ||
|---|---|---|---|
 Average Temperature |
26°C | 22°C | |
 High Temp |
28°C | 24°C | |
| Low Temp |
24°C | 19°C | |
 Total Precipitation |
40 mm | 60 mm | |
| Rainy Days |
7 days | 10 days | |
July
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is August a good time to visit San Sebastián?
Want nice weather? Then August is a great time to be in San Sebastián. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for San Sebastián in August
With 41°C, San Sebastián hit the highest temperature in the last 10 years in August 2023. The lowest daytime temperature in this month was 19°C in 2021. The extreme night temperatures ranged from a low of 6°C to a high of 22°C.
Check out the climate of San Sebastián for all months and discover the best travel time
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.
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Daily Temperature in August in San Sebastián
This chart shows the average daily temperatures, both day and night, for each day in August in San Sebastián, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in August in San Sebastián
The chart below shows the average daily precipitation in August for San Sebastián, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for August, you can expect around 7 days of rain in San Sebastián.
Daily UV Index in August in San Sebastián
This chart shows the average daily UV index in August in San Sebastián, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in San Sebastián Over the Years
This chart shows the average temperature in August in San Sebastián, measured in degrees Celsius, over the past years.
Total Precipitation in August in San Sebastián Over the Years
This chart shows the average precipitation in August in San Sebastián, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in August for San Sebastián
Click on a specific day in August for detailed info on the typical weather on that day in San Sebastián. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in San Sebastián
Have you been to San Sebastián in August?
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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.
Or check out the climate of San Sebastián for all months at once
