San Sebastian climate
Spain
San Sebastian climate can look simple on averages, but travel comfort is often driven by humidity, wind, and rain.
In San Sebastian, seasonality tends to show up in mornings/evenings and indoor-outdoor gaps more than in a single number.
Climate facts
Dec · Jan · Feb
Avg low 6–8°C / high 11–13°C · Rainy days: 12–18 / ~120–200 mm
Mar · Apr · May · Sep · Oct · Nov
Avg low 9–16°C / high 14–22°C · Rainy days: 9–16 / ~90–190 mm
Mar · Apr · May · Sep · Oct · Nov
Avg low 9–16°C / high 14–22°C · Rainy days: 9–16 / ~90–190 mm
Jun · Jul · Aug
Avg low 16–19°C / high 22–26°C · Rainy days: 6–12 / ~60–120 mm
How it tends to feel for travel
Rainier seasons can feel heavier even at similar temperatures, simply because you spend more time damp or under clouds.
Rainier seasons can feel heavier even at similar temperatures, simply because you spend more time damp or under clouds.
When it tends to fit
- • Once you see the year-round pattern, it’s easier to judge whether a month fits your style.
- • If you revisit the city, separating “seasonal itineraries” can save a lot of planning time.
- • In humidity- or rain-driven cities, adjusting the indoor/outdoor ratio can change comfort a lot.
When it may not fit
- • If you rely only on averages, you may be surprised by variability (squalls, wind, indoor AC).
- • In monsoon-like periods, the more your itinerary depends on outdoor walking, the higher the risk.
Outfit notes
This connects climate patterns to packing—without over-interpreting.
- • 🌧️ Main drivers: San Sebastián often runs on **drizzle/rain + wind + humidity**. Comfort is frequently about staying dry.
- • 🧥 Waterproof outer: umbrellas can struggle in wind. A hooded rain shell is high value.
- • 👟 Shoes: wet pavement is common. Consider water-resistant (or quick-drying) shoes with good traction.
The same numbers can still feel different depending on how you travel.
Explore San Sebastian
These pages are connected so you can compare conditions and decide for yourself.