Temperatures in April
It's cool to moderate in April in San Sebastián with an average temperature of 17°C. Temperatures this month range from a low of 15°C to a high of 19°C. At night, you can expect temperatures between 6°C and 11°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for San Sebastián in April. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of April
The month of April starts in San Sebastián with cool temperatures, averaging around 17°C during the day and nights close to 8°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-April
By mid-April, the average daytime temperature rises to around 18°C, with nights close to 10°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of April
By the end of April, the average daytime temperature in San Sebastián will be around 18°C, with nights close to 10°C. A shower might show up, but overall the weather will be dry and sunny.
Discover cheap trips to San Sebastián 
Precipitation in April
In April, there is an average of 50 mm of precipitation, spread over 9 days. The wind speed is around 4 Bft, mostly coming from the South.
The average precipitation chance is 30% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in April 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 April |
London | ||
|---|---|---|---|
 Average Temperature |
17°C | 15°C | |
 High Temp |
19°C | 18°C | |
| Low Temp |
15°C | 12°C | |
 Total Precipitation |
50 mm | 29 mm | |
| Rainy Days |
9 days | 7 days | |
March
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 April a good time to visit San Sebastián?
Looking for sun and warm weather? Then April isn’t the best time to be in San Sebastián. The temperature is too low this month for a warm stay.
Temperature records for San Sebastián in April
With 27°C, San Sebastián hit the highest temperature in the last 10 years in April 2018. The lowest daytime temperature in this month was 6°C in 2022. The extreme night temperatures ranged from a low of -3°C to a high of 18°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.
Plan your next holiday
Don’t miss the best holiday deals for San Sebastián and see what our partners have for you.
Daily Temperature in April in San Sebastián
This chart shows the average daily temperatures, both day and night, for each day in April 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 April in San Sebastián
The chart below shows the average daily precipitation in April 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 April, you can expect around 9 days of rain in San Sebastián.
Daily UV Index in April in San Sebastián
This chart shows the average daily UV index in April 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 April in San Sebastián Over the Years
This chart shows the average temperature in April in San Sebastián, measured in degrees Celsius, over the past years.
Total Precipitation in April in San Sebastián Over the Years
This chart shows the average precipitation in April 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 April for San Sebastián
Click on a specific day in April 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 April in San Sebastián
The weather in April in San Sebastián is rated 0 out of 5 stars by 1 visitor. Have you been to San Sebastián? Share your weather experience to help other visitors.
Have you been to San Sebastián in April?
Share your weather experience in April in San Sebastián.
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
