16-day forecast — San Sebastián
Updated every hour
Fri · Today
Clear
+23°
+15°
0.2 mm
Wind12 km/h NW
Gusts30 km/h
UV index5 – Moderate
Chance of rain17%
Sunrise07:58
Sunset20:00
Sat · Tomorrow
Showers
+23°
+15°
0.3 mm
Wind13 km/h N
Gusts26 km/h
UV index5 – Moderate
Chance of rain40%
Sunrise07:59
Sunset19:58
Sunday 27/9
Cloudy
+31°
+15°
0.8 mm
Wind12 km/h S
Gusts24 km/h
UV index4 – Moderate
Chance of rain57%
Sunrise08:00
Sunset19:56
Monday 28/9
Cloudy
+29°
+16°
12.8 mm
Wind16 km/h SE
Gusts34 km/h
UV index3 – Low
Chance of rain85%
Sunrise08:02
Sunset19:55
Tuesday 29/9
Cloudy
+28°
+16°
12%
Wind23 km/h S
Gusts49 km/h
UV index6 – High
Chance of rain12%
Sunrise08:03
Sunset19:53
Wednesday 30/9
Cloudy
+27°
+21°
19%
Wind21 km/h S
Gusts52 km/h
UV index6 – High
Chance of rain19%
Sunrise08:04
Sunset19:51
Thursday 1/10
Showers
+27°
+16°
4.2 mm
Wind12 km/h S
Gusts26 km/h
UV index7 – High
Chance of rain70%
Sunrise08:05
Sunset19:49
Friday 2/10
Cloudy
+22°
+14°
18%
Wind9 km/h N
Gusts23 km/h
UV index5 – Moderate
Chance of rain18%
Sunrise08:06
Sunset19:47
Saturday 3/10
Cloudy
+23°
+16°
19%
Wind10 km/h NW
Gusts24 km/h
UV index6 – High
Chance of rain19%
Sunrise08:07
Sunset19:46
Sunday 4/10
Showers
+17°
+12°
14.2 mm
Wind17 km/h NW
Gusts33 km/h
UV index4 – Moderate
Chance of rain93%
Sunrise08:08
Sunset19:44
Monday 5/10
Showers
+15°
+12°
7.1 mm
Wind8 km/h NW
Gusts22 km/h
UV index3 – Moderate
Chance of rain89%
Sunrise08:10
Sunset19:42
Tuesday 6/10
Cloudy
+22°
+10°
1.0 mm
Wind7 km/h S
Gusts22 km/h
UV index6 – High
Chance of rain60%
Sunrise08:11
Sunset19:40
Wednesday 7/10
Showers
+17°
+10°
31.4 mm
Wind22 km/h W
Gusts47 km/h
UV index4 – Moderate
Chance of rain90%
Sunrise08:12
Sunset19:39
Thursday 8/10
Showers
+15°
+10°
4.9 mm
Wind20 km/h W
Gusts45 km/h
UV index4 – Moderate
Chance of rain88%
Sunrise08:13
Sunset19:37
Friday 9/10
Showers
+20°
+14°
3.6 mm
Wind15 km/h S
Gusts24 km/h
UV index4 – Moderate
Chance of rain—
Sunrise08:14
Sunset19:35
Saturday 10/10
Showers
+20°
+13°
4.1 mm
Wind15 km/h SE
Gusts22 km/h
UV index4 – Moderate
Chance of rain—
Sunrise08:15
Sunset19:33
About San Sebastián
Bucht La Concha im Baskenland — mildes Atlantikklima, deutlich mehr Regen als am Mittelmeer.
CountrySpain
RegionBaskenland
ContinentEurope
Time zoneEurope/Madrid (+02:00)
Latitude43.3128°
Longitude-1.9750°
Air qualityFair (EAQI 30)
Climate in San Sebastián in September
Normals 8 years · best time to visit · Open-MeteoBest time to visit San Sebastián: June–September. With good weather, September is a recommended month to visit.
| August | September | October | |
|---|---|---|---|
| Average temperature | ▼ 21°C | 19°C | ▼ 17°C |
| Highest temperature | ▼ 25°C | 23°C | ▼ 21°C |
| Lowest temperature | ▼ 18°C | 16°C | ▼ 14°C |
| Sea temperature | ▼ 23,1°C | 21,4°C | ▼ 19,2°C |
| Precipitation | ▲ 105 mm | 120 mm | ▲ 155 mm |
| Days with precipitation | → 13 d | 13 d | ▲ 14 d |
| Humidity | ▼ 82% | 81% | ▼ 80% |
| Sunshine hours per day | ▼ 10,7 h | 9,8 h | ▼ 7,4 h |
| Cloud cover | ▼ 23% | 22% | ▲ 33% |
| UV index (midday) | ▼ 9 | 7 | ▼ 5 |
| Day length | 13:55 | 12:30 | 11:01 |
| Our rating | Good | Good | Acceptable |
Temperature day by day in September mean + moving average
Precipitation day by day in September mm
UV index day by day in September midday value, clear-sky
Climate normals calculated from Open-Meteo (ERA5 archive 8 years, sea temperature Marine API). UV estimated from solar elevation.
Other destinations in Europe
Weather San Sebastián
Data source
Global weather models — international forecasts
Weather in San Sebastián (Spain): current conditions plus a 24-hour and 16-day forecast for planning your trip. Right now on the ground: +17°, clear, wind 5 km/h. Over the next 7 days temperatures range between 15 and 31 °C, with 1 fine day and 18 mm of rain. Climatologically, highs in September are around 23 °C, with a sea temperature of about 21 °C. Best time to visit: usually June–September. Local time (time zone Europe/Madrid). Data from Open-Meteo and WeatherAPI.