Quick verdict
Peak season: Jun–Sep. Shoulder: May, Oct. Low: Jan–Apr, Nov–Dec.
San Sebastián has an oceanic climate — milder and wetter than the Mediterranean coast.
What's the weather like in San Sebastián by month?
Each month classified as peak (best balance of weather and value), shoulder (a step in either direction), or low season.
Why visit San Sebastián during Jun–Sep?
The driest and warmest season, though cooler than Mediterranean Spain. Perfect beach weather most days, with occasional Atlantic clouds.
Shoulder season (May, Oct) trades a small weather concession for noticeably smaller crowds and softer prices — often the sweet spot for travelers who want flexibility.
Low season (Jan–Apr, Nov–Dec) is when prices fall hardest. Expect weather extremes (heat, humidity, cold, or rain depending on the destination) and reduced hours at some seasonal businesses, but the trade-off can be worth it if budget or solitude matters more than perfect conditions.
What festivals and events happen in San Sebastián?
- TamborradaJanuary 20
San Sebastián's patron saint festival. For 24 hours, the city is filled with the sound of over 100 drumming troupes marching through the streets in military and chef costumes.
- Semana GrandeAugust
A week-long summer festival with concerts, fireworks competitions over La Concha bay, traditional Basque sports, and street parties throughout the city.
- San Sebastián International Film FestivalSeptember
One of the world's most prestigious film festivals (since 1953), attracting A-list talent and premiering award-winning films at the Kursaal center.
- Txotx Cider SeasonJanuary - April
Not a single event but a season-long tradition. Cider houses in the hills open their barrels and serve a ritual set meal of cod omelet, steak, cheese, and cider caught fresh from the barrel.
Cooler & warmer in Europe this June
If San Sebastián's June weather isn't your match, here are the closest Europe alternatives at different temperatures. Distances are from San Sebastián.
Cooler
See the full ranked list: All Europe destinations in June →
Frequently asked
When is the best time to visit San Sebastián?
The best time to visit San Sebastián is Jun–Sep. San Sebastián has an oceanic climate — milder and wetter than the Mediterranean coast. These months balance comfortable weather, manageable crowds, and prices that haven't yet hit peak-season highs.
When is the cheapest time to visit San Sebastián?
Low-season months in San Sebastián run Jan–Apr, Nov–Dec. Flights and hotels typically run 20-40% cheaper than peak. The trade-off is weather (which is why these months are off-peak) and some businesses operating shorter hours, especially in smaller seasonal destinations.
What's the weather like in San Sebastián year-round?
Summer averages around 22°C (72°F) and winter averages around 8°C (46°F) in San Sebastián. San Sebastián has an oceanic climate — milder and wetter than the Mediterranean coast. Summers are warm but rarely scorching, winters are cool but mild. Rain is frequent year-round, especially in autumn and spring. The Basque coast is greener than southern Spain for a reason.
What festivals or events are happening in San Sebastián?
Notable events in San Sebastián: Tamborrada (January 20); Semana Grande (August); San Sebastián International Film Festival (September). San Sebastián's patron saint festival. For 24 hours, the city is filled with the sound of over 100 drumming troupes marching through the streets in military and chef costumes.
How many days do I need in San Sebastián?
Most travelers spend 3-5 days in San Sebastián, which covers the main neighborhoods, top attractions, and a half-day day trip. Add a day if you're visiting during peak season when crowds slow you down, or if you're combining San Sebastián with nearby destinations.
More peak-season picks for San Sebastián's best months
See every destination at its peak in each of San Sebastián's best months.
Full guide
San Sebastián travel guide →
Cost, food, neighborhoods, transit, and hand-picked things to do.
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