Weather in Donostia / San Sebastián for August 2025
The forecast for the first days of August 2025 in Donostia / San Sebastián predicts temperatures to be around 26 °C, close to the historical average.
In general, the average temperature in Donostia / San Sebastián at the beginning of August is 27.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.4 °C by the end of August.
Donostia / San Sebastián in August brings notable rainfall, with an average of 19 rainy days and a total precipitation of 136.4 mm.
Is August a good time to visit Donostia / San Sebastián? check out the best time to travel to Donostia / San Sebastián page.
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Donostia / San Sebastián Weather August
Temperatures trend during August in Donostia / San Sebastián
August weather in Donostia / San Sebastián day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. |  Patchy rain possible | 23° /15° | 0.8 mm | 1.7 | |
| 2 Aug. | Patchy rain possible | 23° /16° | 0.9 mm | 2.2 | |
| 3 Aug. |  Sunny | 23° /12° | 0 mm | 2 | |
| 4 Aug. | Sunny | 27° /13° | 0 mm | 5 | |
| 5 Aug. | Sunny | 28° /15° | 0 mm | 6 | |
| 6 Aug. | Sunny | 39° /17° | 0 mm | 7 | |
| 7 Aug. | Sunny | 32° /18° | 0 mm | 6 | |
| 8 Aug. | Patchy rain possible | 23° /17° | 0.3 mm | 4 | |
| 9 Aug. | Patchy rain possible | 21° /16° | 0.9 mm | 4 | |
| 10 Aug. | Patchy rain possible | 23° /14° | 0.1 mm | 4 | |
| 11 Aug. | Sunny | 34° /14° | 0 mm | 6 | |
| 12 Aug. | Patchy rain possible | 24° /16° | 0.6 mm | 4 | |
| 13 Aug. | Patchy rain possible | 23° /16° | 0.1 mm | 4 | |
| 14 Aug. | Patchy rain possible | 22° /17° | 4.5 mm | 5 | |
| 15 Aug. | Patchy rain possible | 22° /16° | 4.9 mm | 5 | |
| 16 Aug. | Patchy rain possible | 23° /17° | 5.1 mm | 5 | |
| 17 Aug. |  Cloudy | 24° /17° | 0.2 mm | 6 | |
| 18 Aug. | Patchy rain possible | 25° /17° | 2.5 mm | 6 | |
| 19 Aug. | Sunny | 25° /17° | 0 mm | 7 | |
| 20 Aug. |  Partly cloudy | 24° /16° | 0.1 mm | 7 | |
| 21 Aug. | Sunny | 24° /17° | 1.9 mm | 6 | |
| 22 Aug. | Sunny | 24° /17° | 0 mm | 7 | |
| 23 Aug. | Sunny | 30° /17° | 0.1 mm | 8 | |
| 24 Aug. | Patchy rain possible | 28° /18° | 1.7 mm | 7 | |
| 25 Aug. | Light rain shower | 20° /16° | 3.6 mm | 5 | |
| 26 Aug. | Light rain shower | 20° /15° | 4.6 mm | 5 | |
| 27 Aug. |  Moderate or heavy rain shower | 23° /14° | 12.2 mm | 5 | |
| 28 Aug. |  Torrential rain shower | 22° /16° | 23.2 mm | 6 | |
| 29 Aug. | Moderate or heavy rain shower | 18° /17° | 24 mm | 4 | |
| 30 Aug. | Moderate or heavy rain shower | 22° /16° | 11 mm | 5 | |
| 31 Aug. | Sunny | 25° /15° | 7.4 mm | 6 | |
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Donostia / San Sebastián in August - FAQ
What to pack to Donostia / San Sebastián in August?
As you prepare for your trip to Donostia / 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 Donostia / 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 Donostia / San Sebastián
UV exposure in Donostia / San Sebastián during August
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Where is Donostia / San Sebastián?Get accurate weather forecasts for Donostia / San Sebastián, located at latitude 43.313 and longitude -1.975. Stay updated with localized weather information tailored for Donostia / San Sebastián.