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San Sebastián Weather in April
April in San Sebastián averages 16°C (61°F) during the day and 9°C (48°F) at night. Quite a bit of rainfall is typical this month, with around 133 mm (5.2 in) on average. An umbrella is a good idea.
Rainfall in San Sebastián in April
Records from the past 30 years suggest around 18 days of rain, with 133 mm (5.2 in) average for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in San Sebastián in April
April in San Sebastián brings typical temperatures with highs around 16°C (61°F) and lows of 9°C (48°F). Conditions are often most pleasant around the middle of the day. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in San Sebastián in April
The month experiences a moderate amount of sunlight, with 159 hours of sunshine. This provides a nice balance between sunshine and clouds.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July and August typically offer the best weather for San Sebastián.
San Sebastián Temperature in April
Min Temperature
9°C (48°F)
Max Temperature
16°C (61°F)
Chance of Rain
59%
Precipitation
133 mm (5.2 in)
Rainy days
18 days
Humidity
71%
Sunshine
159 hours
Percentage Sunshine
San Sebastián Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Sebastián - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Sebastián typically stay consistent throughout April, with daily highs averaging around 16°C (61°F). Nights are cool, with lows typically ranging from 7°C (45°F) to 9°C (48°F).
Average temperatures in April
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in April
Historical weather records for San Sebastián in April
Browse day-by-day weather records for San Sebastián spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Sebastián historical weather extremes in April
The extremes listed below come from historical weather data collected in San Sebastián from 1976 through 2026.
- San Sebastián recorded its highest April temperature of 30°C (86°F) on April 28, 2003.
- The coldest April day was on April 6, 1986, with a maximum of 6°C (43°F).
- San Sebastián registered its coldest April night on April 4, 1996, with temperatures dropping to -4°C (25°F).
- The heaviest April precipitation occurred on April 28, 2012, when 81 mm (3.2 in) of precipitation fell.
Best Places in Spain in April
Find out more about the weather in Spain and which places have the best travel conditions in this month. See all of Spain in April →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in San Sebastián in April
Pack for changing conditions in San Sebastián in April. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. Sunglasses could come in handy during the sunnier parts of your trip.
What To Do in San Sebastián in April
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming5/10 -
Cycling5/10 -
Walking5/10 -
Camping3/10 -
Outdoor sports9/10
San Sebastián 3-Day Forecast
More climate data for San Sebastián
Temperature Rainfall Sunshine Humidity
See the full San Sebastián climate overview or explore weather in Spain.
Popular in April
Where to go in April - average daytime high across popular destinations.
Bucket list
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