Weather in San Sebastián for August 2025
The forecast for the next days in San Sebastián predicts temperatures to be around 26 °C, close to the historical average.
In general, the average temperature in San Sebastián at the beginning of August is 26.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.1 °C by the end of August.
The climate of San Sebastián in August is notably wet, with an average of 13 rainy days, and a total of 68.6 mm of precipitation.
Is August a good time to visit San Sebastián? check out the best time to travel to San Sebastián page.
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San Sebastián Weather August
Temperatures trend during August in San Sebastián
August weather in San Sebastián day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. |  Patchy rain possible | 24° /17° | 0.4 mm | 5 | |
| 2 Aug. | Patchy rain possible | 23° /17° | 0.3 mm | 2 | |
| 3 Aug. |  Partly cloudy | 24° /17° | 0 mm | 2.2 | |
| 4 Aug. |  Sunny | 28° /16° | 0 mm | 2.1 | |
| 5 Aug. | Sunny | 26° /18° | 0 mm | 1.8 | |
| 6 Aug. | Sunny | 32° /20° | 0 mm | 6 | |
| 7 Aug. | Sunny | 28° /20° | 0 mm | 6 | |
| 8 Aug. | Sunny | 26° /19° | 0 mm | 6 | |
| 9 Aug. | Patchy rain possible | 24° /19° | 4.1 mm | 5 | |
| 10 Aug. | Sunny | 23° /20° | 0 mm | 6 | |
| 11 Aug. | Sunny | 24° /18° | 0 mm | 6 | |
| 12 Aug. | Sunny | 25° /17° | 0 mm | 6 | |
| 13 Aug. | Sunny | 27° /19° | 0 mm | 6 | |
| 14 Aug. | Partly cloudy | 25° /19° | 0.1 mm | 6 | |
| 15 Aug. | Partly cloudy | 23° /15° | 0.1 mm | 6 | |
| 16 Aug. | Sunny | 22° /15° | 0 mm | 6 | |
| 17 Aug. | Light rain shower | 22° /17° | 0.6 mm | 5 | |
| 18 Aug. | Light rain shower | 20° /16° | 7.3 mm | 5 | |
| 19 Aug. | Sunny | 25° /14° | 0 mm | 7 | |
| 20 Aug. |  Light drizzle | 23° /15° | 1.9 mm | 5 | |
| 21 Aug. | Patchy rain possible | 20° /15° | 1.3 mm | 5 | |
| 22 Aug. | Partly cloudy | 21° /16° | 0 mm | 6 | |
| 23 Aug. | Sunny | 24° /17° | 0 mm | 6 | |
| 24 Aug. | Light rain shower | 25° /17° | 4.4 mm | 6 | |
| 25 Aug. | Patchy rain possible | 19° /16° | 2.3 mm | 4 | |
| 26 Aug. | Sunny | 22° /11° | 0 mm | 6 | |
| 27 Aug. |  Overcast | 24° /15° | 0 mm | 5 | |
| 28 Aug. | Sunny | 22° /16° | 0.2 mm | 6 | |
| 29 Aug. |  Moderate or heavy rain shower | 19° /15° | 16.4 mm | 5 | |
| 30 Aug. | Light rain shower | 19° /16° | 6.4 mm | 5 | |
| 31 Aug. | Sunny | 23° /15° | 4.8 mm | 6 | |
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San Sebastián in August - FAQ
What to pack to San Sebastián in August?
As you prepare for your trip to San Sebastián in August, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in San Sebastián, during August, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
August rainfall patterns in San Sebastián
UV exposure in San Sebastián during August
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Where is San Sebastián?Get accurate weather forecasts for San Sebastián, located at latitude 43.201 and longitude -4.423. Stay updated with localized weather information tailored for San Sebastián.