San Sebastián weather in August
San Sebastián in August averages 22°C (71°F), 110 mm of rain and 6.6 hours of sun a day.
Of the twelve months in San Sebastián, August is the warmest, the third driest and the second sunniest.
- Average temp
- 22°C (71°F)
18–26°C · 64–78°F
- Rainfall
- 110 mm
Showers likely
- Sunshine
- 6.6 h
hours per day
What is San Sebastián like in August?
Daytime
Days are warm, typically in the mid-20s°C or above.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for San Sebastián in August?
A light rain jacket
About 110 mm falls this month — showers rather than washouts.
A layer for the evening
Evenings cool off noticeably once the sun is down.
August compared with July and September
August in San Sebastián is 0.6°C warmer than July and 12 mm wetter than it, which averages 21°C (70°F).
August in San Sebastián is 2.2°C warmer than September and 37 mm drier than it, which averages 20°C (67°F).
Daylight in San Sebastián in August
On 15 August the sun is up for 13 hours 57 minutes in San Sebastián, rising about 07:13 and setting about 21:10 local time.
August ends 1 hour 18 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 1 hour 26 minutes short of June, the longest-lit month here.
Where to stay in San Sebastián
Dates are a starting point for August.
Travel guides for San Sebastián
What to read before you book.
San Sebastián weather by month
TemperatureRainfall
How August compares with the rest of the year
August is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 9°C / 48°F | 166 mm |
| February | 10°C / 49°F | 143 mm |
| March | 12°C / 54°F | 127 mm |
| April | 13°C / 56°F | 147 mm |
| May | 17°C / 62°F | 133 mm |
| June | 19°C / 67°F | 106 mm |
| July | 21°C / 70°F | 97 mm |
| August | 22°C / 71°F | 110 mm |
| September | 20°C / 67°F | 146 mm |
| October | 17°C / 62°F | 166 mm |
| November | 12°C / 54°F | 224 mm |
| December | 10°C / 50°F | 179 mm |
Check another month
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FAQs about San Sebastián in August
August climate averages for San Sebastián, 1991–2020.
San Sebastián averages 22°C (71°F) in August, ranging from about 18°C (64°F) at night to 26°C (78°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 110 mm falls across August, enough to need a light jacket but not enough to reshape a trip.
Yes. August averages 22°C (71°F) against 20°C (67°F) in September — 2.2°C warmer.
August is 0.6°C warmer than July, and 12 mm wetter.
Yes. August falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 6.6 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what August is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 13 hours 57 minutes of daylight in mid-August, against 15 hours 23 minutes in June and 8 hours 59 minutes in December.
On 15 August, sunrise is about 07:13 and sunset about 21:10 local time. Both shift across the month — the month ends 1 hour 18 minutes shorter than it starts.
