Weather in San Sebastián for August 2026
The forecast for the first days of August 2026 in San Sebastián predicts temperatures to be around 25 °C, close to the historical average.
In general, the average temperature in San Sebastián at the beginning of August is 23.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 22.3 °C by the end of August.
San Sebastián experiences moderate rainfall in August, with an average of 9 rainy days and a total precipitation of 22.9 mm.
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. |  Sunny | 24° /16° | 0 mm | 6 | |
| 2 Aug. | Sunny | 24° /15° | 0 mm | 6 | |
| 3 Aug. |  Partly cloudy | 24° /17° | 0 mm | 6 | |
| 4 Aug. | Sunny | 24° /15° | 0 mm | 6 | |
| 5 Aug. |  Mist | 23° /15° | 0.1 mm | 5 | |
| 6 Aug. |  Light rain shower | 24° /16° | 1.1 mm | 6 | |
| 7 Aug. | Light rain shower | 22° /16° | 0.8 mm | 6 | |
| 8 Aug. | Patchy rain possible | 24° /16° | 0.2 mm | 6 | |
| 9 Aug. | Mist | 24° /16° | 0 mm | 5 | |
| 10 Aug. | Patchy rain possible | 26° /17° | 0 mm | 6 | |
| 11 Aug. | Mist | 27° /17° | 0 mm | 7 | |
| 12 Aug. | Light rain shower | 24° /17° | 0.8 mm | 6 | |
| 13 Aug. | Light rain shower | 20° /17° | 1.9 mm | 5 | |
| 14 Aug. | Light rain shower | 22° /16° | 0.6 mm | 5 | |
| 15 Aug. | Sunny | 27° /14° | 0 mm | 7 | |
| 16 Aug. | Sunny | 24° /15° | 0 mm | 6 | |
| 17 Aug. | Patchy rain possible | 23° /16° | 0.4 mm | 5 | |
| 18 Aug. | Light rain shower | 22° /16° | 1.2 mm | 5 | |
| 19 Aug. | Sunny | 23° /15° | 0.2 mm | 6 | |
| 20 Aug. |  Light drizzle | 23° /14° | 1.4 mm | 5 | |
| 21 Aug. | Patchy rain possible | 21° /15° | 0.8 mm | 5 | |
| 22 Aug. | Patchy rain possible | 22° /14° | 0 mm | 6 | |
| 23 Aug. | Partly cloudy | 25° /14° | 0 mm | 7 | |
| 24 Aug. | Light rain shower | 24° /15° | 2.9 mm | 6 | |
| 25 Aug. | Patchy rain possible | 22° /14° | 0.2 mm | 5 | |
| 26 Aug. | Sunny | 22° /14° | 0.2 mm | 6 | |
| 27 Aug. | Patchy rain possible | 23° /15° | 2.8 mm | 5 | |
| 28 Aug. | Mist | 22° /13° | 0.3 mm | 5 | |
| 29 Aug. | Light rain shower | 22° /16° | 3.4 mm | 5 | |
| 30 Aug. | Light rain shower | 23° /15° | 1.9 mm | 5 | |
| 31 Aug. | Partly cloudy | 22° /16° | 1.5 mm | 5 | |
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San Sebastián weather in August vs July vs September
| July | August | September | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 22°/15° | 23°/15° | 21°/13° |
| Rainfall | 38 mm | 23 mm | 77 mm |
| Wind | 13.3 km/h | 13.4 km/h | 13.9 km/h |
| Humidity | 79% | 79% | 77% |
| Rainy days | 15 days | 9 days | 18 days |
| Dry days | 16 days | 22 days | 12 days |
Planning a trip to San Sebastián? Discover the best time to visit
San Sebastián in August - FAQ
What are the expected maximum and minimum temperatures in San Sebastián during August?
How much rainfall should be expected in San Sebastián during August?
What are the typical wind conditions in San Sebastián during August?
August rainfall patterns in San Sebastián
UV exposure in San Sebastián during August
What to pack to San Sebastián in August?
Mild & changeable · highs around 23 °C, frequent showers
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
👟 Footwear
🎒 Accessories
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Where is San Sebastián?Get accurate weather forecasts for San Sebastián, located at latitude 43.567 and longitude -5.9. Stay updated with localized weather information tailored for San Sebastián.