2026 Climate Averages

Weather in San Sebastián in August

The weather is near-perfect with ideal temperatures and minimal rain. Recommended month to visit.

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Climate Overview

August is an excellent time to visit San Sebastián. San Sebastián has a Moderate climate with average yearly highs of 24°C, lows of 18°C, and approximately 15 rainy days per month.

Avg High

24°C

Avg Low

18°C

Rainy days

15days

Daylight

14h

Is August a good time to visit San Sebastián?

The weather is near-perfect with ideal temperatures and minimal rain.

Daylight

Sunrise

7:13 AM

Sunset

9:15 PM

Weather by Month
Monthly weather data
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 August

Layers, a light jacket, comfortable walking shoes, and an umbrella.

Climate: Moderate
Travel Context Perfect weather for walking tours and all-day sightseeing.

Planning a trip to San Sebastián?

Common Questions

Is August a good time to visit San Sebastián? +

August is typically Excellent for visiting San Sebastián, with average highs of 24°C and around 15 rainy days.

What should I pack for San Sebastián in August? +

With highs of 24°C and lows of 18°C in {month}, we recommend: Layers, a light jacket, comfortable walking shoes, and an umbrella.

Does it rain a lot in San Sebastián in August? +

San Sebastián typically sees around 15 rainy days in August.

How many hours of daylight are there in San Sebastián in August? +

In August, San Sebastián gets approximately 14 hours of daylight per day.

Is August peak season in San Sebastián? +

Yes, August 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.

Weather Data: Based on 2020–2025 historical climate data from Open-Meteo

Solar calculations: SunCalc (timezone: Europe/Madrid)

Last Updated: January 2026

More San Sebastián Guides

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Things to Do

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Overview

Complete travel guide for San Sebastián: top things to do, itineraries, and typical costs.

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August

24° / 18°
View Full Destination Guide