Weather in San Sebastián in September
The weather is near-perfect with ideal temperatures and minimal rain. Recommended month to visit.
Climate Overview
September is an excellent time to visit San Sebastián. San Sebastián has a Moderate climate with average yearly highs of 23°C, lows of 16°C, and approximately 12 rainy days per month.
23°C
16°C
12days
12.6h
Is September a good time to visit San Sebastián?
The weather is near-perfect with ideal temperatures and minimal rain.
Daylight
7:47 AM
8:22 PM
Weather by Month
| Month | High | Low | Rainy days | Condition |
|---|---|---|---|---|
| January | 13°C | 7°C | 13 | Wet |
| February | 16°C | 9°C | 12 | Good |
| March | 14°C | 8°C | 16 | Wet |
| April | 18°C | 12°C | 13 | Wet |
| May | 21°C | 14°C | 11 | Excellent (best) |
| June | 20°C | 15°C | 17 | Excellent (best) |
| July | 23°C | 18°C | 10 | Excellent (best) |
| August | 24°C | 18°C | 15 | Excellent (best) |
| September | 23°C | 16°C | 12 | Excellent (best) |
| October | 18°C | 12°C | 22 | Wet |
| November | 18°C | 12°C | 9 | Good |
| December | 12°C | 9°C | 26 | Wet |
Weather data: Open-Meteo Archive (2020-2025) • Open-Meteo.com (CC BY 4.0) • Historical avg. 2020–2025
What to Pack for September
Layers, a light jacket, comfortable walking shoes, and an umbrella.
Planning a trip to San Sebastián?
Common Questions
Is September a good time to visit San Sebastián? +
September is typically Excellent for visiting San Sebastián, with average highs of 23°C and around 12 rainy days.
What should I pack for San Sebastián in September? +
With highs of 23°C and lows of 16°C in {month}, we recommend: Layers, a light jacket, comfortable walking shoes, and an umbrella.
Does it rain a lot in San Sebastián in September? +
San Sebastián typically sees around 12 rainy days in September.
How many hours of daylight are there in San Sebastián in September? +
In September, San Sebastián gets approximately 12.6 hours of daylight per day.
Is September peak season in San Sebastián? +
Yes, September is peak season in San Sebastián. Expect higher prices and more crowds, but also the best weather.
What is the best month to visit San Sebastián? +
The best months to visit San Sebastián are May, June, July, August, September, when the weather is optimal for sightseeing.
More San Sebastián Guides
Best Time to Visit
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Things to Do
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Itineraries
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Overview
Complete travel guide for San Sebastián: top things to do, itineraries, and typical costs.