Weather in Donostia / San Sebastián for August 2026
In general, the average temperature in Donostia / San Sebastián at the beginning of August is 23.3 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 21.9 °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° /16° | 0.6 mm | 5 | |
| 2 Aug. | Patchy rain possible | 24° /16° | 2 mm | 5 | |
| 3 Aug. |  Moderate or heavy rain shower | 22° /15° | 3 mm | 5 | |
| 4 Aug. |  Sunny | 24° /15° | 7.9 mm | 6 | |
| 5 Aug. |  Overcast | 23° /16° | 0.7 mm | 5 | |
| 6 Aug. | Patchy rain possible | 23° /16° | 1.1 mm | 5 | |
| 7 Aug. | Sunny | 24° /15° | 0.3 mm | 6 | |
| 8 Aug. | Sunny | 25° /15° | 0 mm | 6 | |
| 9 Aug. | Sunny | 27° /16° | 0.1 mm | 6 | |
| 10 Aug. | Sunny | 27° /16° | 0.1 mm | 7 | |
| 11 Aug. | Sunny | 32° /18° | 0 mm | 8 | |
| 12 Aug. | Patchy rain possible | 27° /18° | 1.4 mm | 6 | |
| 13 Aug. | Patchy rain possible | 24° /17° | 3.7 mm | 5 | |
| 14 Aug. | Patchy rain possible | 24° /17° | 3 mm | 5 | |
| 15 Aug. | Patchy rain possible | 27° /17° | 3.2 mm | 6 | |
| 16 Aug. | Patchy rain possible | 25° /17° | 3.4 mm | 6 | |
| 17 Aug. |  Cloudy | 26° /16° | 0.2 mm | 6 | |
| 18 Aug. | Light rain shower | 23° /17° | 2.7 mm | 5 | |
| 19 Aug. | Sunny | 24° /16° | 1.8 mm | 6 | |
| 20 Aug. |  Partly cloudy | 23° /16° | 3 mm | 6 | |
| 21 Aug. | Light rain shower | 22° /17° | 5 mm | 5 | |
| 22 Aug. | Sunny | 24° /16° | 0.6 mm | 6 | |
| 23 Aug. | Sunny | 28° /16° | 0 mm | 7 | |
| 24 Aug. | Patchy rain possible | 28° /18° | 1.2 mm | 7 | |
| 25 Aug. | Light rain shower | 22° /16° | 2.4 mm | 6 | |
| 26 Aug. | Light rain shower | 21° /15° | 3.6 mm | 5 | |
| 27 Aug. | Moderate or heavy rain shower | 22° /15° | 10.4 mm | 5 | |
| 28 Aug. |  Torrential rain shower | 21° /15° | 17.2 mm | 5 | |
| 29 Aug. | Light rain shower | 20° /16° | 18.1 mm | 4 | |
| 30 Aug. | Patchy rain possible | 23° /16° | 8 mm | 5 | |
| 31 Aug. | Sunny | 24° /15° | 6.8 mm | 6 | |
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Donostia / San Sebastián weather in August vs July vs September
| July | August | September | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 23°/16° | 23°/16° | 22°/15° |
| Rainfall | 48 mm | 136 mm | 171 mm |
| Wind | 13.7 km/h | 13.7 km/h | 14.5 km/h |
| Humidity | 79% | 79% | 76% |
| Rainy days | 18 days | 19 days | 21 days |
| Dry days | 13 days | 12 days | 9 days |
Planning a trip to Donostia / San Sebastián? Discover the best time to visit
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
Quick links
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.