Updated: Monday 20 April 2026 - 02:30
Next update: Monday 20 April 2026 - 20:15

Our forecast for San Sebastián
by: Meteo - Arriola

TonightTuesdayTuesday nightWednesdayWednesday nightThursdayThursday nightFriday
<2 mm
40%		<2 mm
50%		5 mm
70%		<2 mm
30%
15°25°16°21°13°23°15°22°

7 km/h
8 km/h
14 km/h
17 km/h
0 km/h
17 km/h
14 km/h
16 km/h


Temperature

Thunder

Sun

Wind

Max/Min Temperature



Overview

 IconTemperatureWindPrecipitationUV
 Monday 20 April 2026 sunrise  07:16   sunset  20:57   Day Length: 13:40 
Tonight15°
7 km/h		less than 2 mm
Chance of precipitation: 40%
Partly cloudy in the evening, becoming mostly cloudy after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Low 15. Wind northwest around 7 kph, gusting to 25 kph. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.
 Tuesday 21 April 2026 sunrise  07:15   sunset  20:58   Day Length: 13:43 
Tuesday25°
8 km/h		less than 2 mm
Chance of precipitation: 50%		UV 5
 Medium 
Partly cloudy. A chance of rain. Scattered thundershowers possible. High 25. UV index up to 5. Wind north-northeast around 8 kph in the morning, becoming 14 kph, gusting to 25 kph, in the afternoon. Chance of precipitation 50 percent. Precipitation mostly less than 2 mm.
Tuesday night16°
14 km/h		5 mm
Chance of precipitation: 70%
Mostly cloudy in the evening, becoming partly cloudy after midnight. Rain likely in the evening, then a chance of rain after midnight. Scattered thundershowers possible. Low 16. Wind north-northeast around 14 kph, gusting to 30 kph, in the evening, becoming 7 kph after midnight. Chance of precipitation 70 percent. Precipitation mostly around 5 mm.
 Wednesday 22 April 2026 sunrise  07:13   sunset  20:59   Day Length: 13:45 
Wednesday21°
17 km/h		-UV 4
 Medium 
Partly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. High 21. UV index up to 4. Wind west-northwest around 17 kph, gusting to 34 kph.
Wednesday night13°
0 km/h		-
Partly to mostly cloudy in the evening, becoming fair after midnight. Low 13. Wind northwest around 8 kph, gusting to 24 kph, in the evening, becoming near calm after midnight.
 Thursday 23 April 2026 sunrise  07:11   sunset  21:00   Day Length: 13:48 
Thursday23°
17 km/h		-UV 6
 High 
Partly cloudy. High 23. UV index up to 6. Wind north-northeast around 6 kph, gusting to 26 kph, in the morning, becoming 17 kph, gusting to 30 kph, in the afternoon.
Thursday night15°
14 km/h		-
Partly to mostly cloudy. Low 15. Wind northeast around 14 kph, gusting to 28 kph, in the evening, becoming 6 kph after midnight.
 Friday 24 April 2026 sunrise  07:10   sunset  21:01   Day Length: 13:51 
Friday22°
16 km/h		less than 2 mm
Chance of precipitation: 30%		UV 5
 Medium 
Mostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. A chance of rain in the afternoon. High 22. UV index up to 5. Wind north-northwest around 7 kph, gusting to 25 kph, in the morning, becoming 16 kph, gusting to 29 kph, in the afternoon. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Friday night14°
16 km/h		less than 2 mm
Chance of precipitation: 40%
Cloudy. A chance of rain. Low 14. Wind northwest around 16 kph, gusting to 29 kph. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.
 Saturday 25 April 2026 sunrise  07:08   sunset  21:02   Day Length: 13:53 
Saturday20°
16 km/h		-UV 4
 Medium 
Mostly cloudy to cloudy. High 20. UV index up to 4. Wind northwest around 16 kph, gusting to 30 kph.
Saturday night13°
11 km/h		-
Mostly cloudy to cloudy in the evening, becoming mostly cloudy after midnight. Low 13. Wind west-northwest around 11 kph, gusting to 26 kph.
 Sunday 26 April 2026 sunrise  07:07   sunset  21:04   Day Length: 13:56 
Sunday21°
14 km/h		-UV 4
 Medium 
Partly cloudy in the morning, becoming mostly cloudy in the afternoon. High 21. UV index up to 4. Wind northwest around 14 kph, gusting to 28 kph.
Sunday night12°
11 km/h		-
Fair to partly cloudy. Low 12. Wind northwest around 11 kph, gusting to 27 kph, in the evening, becoming west after midnight.
 Monday 27 April 2026 sunrise  07:05   sunset  21:05   Day Length: 13:59 
Monday22°
12 km/h		-UV 5
 Medium 
Partly cloudy. High 22. UV index up to 5. Wind northwest around 12 kph, gusting to 30 kph.
Monday night12°
11 km/h		-
Mostly clear in the evening, becoming partly cloudy after midnight. Low 12. Wind northwest around 11 kph, gusting to 29 kph, in the evening, becoming west after midnight.

Forecast by 3 hour intervals

 Monday 20 April 2026 sunrise  07:16   sunset  20:57   Day Length: 13:40 
PeriodIconTemperatureWindPrecipitationPressureUVConditions
18-2119°
9 km/h		-1011 hPaMostly Cloudy
Drizzle
21-0017°
8 km/h		0.2 mm1011.8 hPaMostly Cloudy
Drizzle
 Tuesday 21 April 2026 sunrise  07:15   sunset  20:58   Day Length: 13:43 
PeriodIconTemperatureWindPrecipitationPressureUVConditions
00-0317°
8 km/h		0.2 mm1011.4 hPaMostly Cloudy
Drizzle
03-0616°
5 km/h		0.4 mm1010.1 hPaMostly Cloudy
06-0917°
8 km/h		-1009.4 hPaMostly Cloudy
09-1222°
16 km/h		-1009 hPaUV 4
 Medium 		Partly cloudy
12-1524°
20 km/h		-1006.9 hPaUV 5
 Medium 		Partly cloudy
15-1823°
20 km/h		-1005.9 hPaUV 1
 Low 		Cloudy
Light rain
18-2121°
8 km/h		0.7 mm1007.3 hPaCloudy
Moderate rain
21-0018°
5 km/h		4.1 mm1008.4 hPaCloudy
Light rain
 Wednesday 22 April 2026 sunrise  07:13   sunset  20:59   Day Length: 13:45 
PeriodIconTemperatureWindPrecipitationPressureUVConditions
00-0317°
6 km/h		0.8 mm1008.2 hPaPartly cloudy
03-0617°
4 km/h		-1008 hPaPartly cloudy
Moderate dew
06-0918°
4 km/h		-1010.2 hPaPartly cloudy
09-1222°
19 km/h		-1012.8 hPaUV 4
 Medium 		Partly cloudy
12-1522°
18 km/h		-1013 hPaUV 5
 Medium 		Partly cloudy
Chance of showers
15-1820°
15 km/h		-1013.1 hPaUV 1
 Low 		Mostly Cloudy
Chance of showers
18-2117°
11 km/h		-1014.1 hPaMostly Cloudy
21-0016°
7 km/h		-1015.3 hPaMostly clear
 Thursday 23 April 2026 sunrise  07:11   sunset  21:00   Day Length: 13:48 
PeriodIconTemperatureWindPrecipitationPressureUVConditions
00-0315°
6 km/h		-1015.5 hPaMostly clear
Light dew
03-0615°
5 km/h		-1015 hPaPartly cloudy
Moderate dew
06-0917°
7 km/h		-1015.6 hPaPartly cloudy
Light dew
09-1221°
14 km/h		-1017.1 hPaUV 4
 Medium 		Partly cloudy
12-1521°
17 km/h		-1016.2 hPaUV 5
 Medium 		Mostly Cloudy
15-1820°
15 km/h		-1015.6 hPaUV 1
 Low 		Cloudy
Drizzle
18-2117°
10 km/h		0.3 mm1016.3 hPaCloudy
Drizzle
21-0016°
6 km/h		0.4 mm1016.3 hPaMostly Cloudy
Drizzle
 Friday 24 April 2026 sunrise  07:10   sunset  21:01   Day Length: 13:51 
PeriodIconTemperatureWindPrecipitationPressureUVConditions
00-0316°
4 km/h		0.2 mm1015.3 hPaMostly Cloudy
Light rain
03-0615°
4 km/h		1 mm1014.3 hPaMostly Cloudy
Moderate dew
06-0916°
5 km/h		-1015.1 hPaMostly Cloudy
Drizzle
09-1220°
12 km/h		0.1 mm1015.5 hPaUV 4
 Medium 		Partly cloudy
12-1522°
14 km/h		-1014 hPaUV 5
 Medium 		Mostly Cloudy
Drizzle
15-1819°
20 km/h		0.4 mm1013.8 hPaUV 1
 Low 		Mostly Cloudy
Light rain
18-2116°
16 km/h		1.9 mm1015.3 hPaCloudy
Light rain
21-0015°
13 km/h		1.2 mm1016.2 hPaMostly Cloudy
Light rain
 Saturday 25 April 2026 sunrise  07:08   sunset  21:02   Day Length: 13:53 
PeriodIconTemperatureWindPrecipitationPressureUVConditions
00-0315°
13 km/h		1.7 mm1016.1 hPaMostly Cloudy
Light rain
03-0614°
13 km/h		2.2 mm1015.5 hPaMostly Cloudy
Moderate rain
06-0914°
14 km/h		2.9 mm1016.2 hPaCloudy
Moderate rain
09-1215°
15 km/h		2.9 mm1016.9 hPaUV 2
 Low 		Cloudy
Light rain
12-1515°
15 km/h		2.2 mm1015.7 hPaUV 3
 Medium 		Cloudy
Light rain
15-1814°
10 km/h		1.4 mm1014.9 hPaOvercast
Light rain
18-2114°
6 km/h		0.6 mm1015.9 hPaOvercast
Drizzle
21-0014°
6 km/h		0.2 mm1016.4 hPaOvercast
Drizzle
 Sunday 26 April 2026 sunrise  07:07   sunset  21:04   Day Length: 13:56 
PeriodIconTemperatureWindPrecipitationPressureUVConditions
00-0314°
6 km/h		0.3 mm1016.4 hPaOvercast
Drizzle
03-0614°
6 km/h		0.4 mm1015.8 hPaCloudy
Light rain
06-0914°
8 km/h		0.5 mm1016.4 hPaMostly Cloudy
Light rain
09-1216°
10 km/h		0.5 mm1017.1 hPaUV 3
 Medium 		Mostly Cloudy
Drizzle
12-1517°
13 km/h		0.4 mm1016 hPaUV 4
 Medium 		Partly cloudy
15-1817°
12 km/h		-1015.7 hPaUV 1
 Low 		Partly cloudy
18-2116°
9 km/h		-1016.6 hPaPartly cloudy
21-0014°
3 km/h		-1016.8 hPaClear
Light dew
 Monday 27 April 2026 sunrise  07:05   sunset  21:05   Day Length: 13:59 
PeriodIconTemperatureWindPrecipitationPressureUVConditions
00-0313°
4 km/h		-1016.4 hPaClear
Heavy dew
03-0612°
6 km/h		-1016 hPaClear
Heavy dew
06-0914°
3 km/h		-1015.9 hPaUV 1
 Low 		Clear
Heavy dew
09-1219°
12 km/h		-1015.9 hPaUV 5
 Medium 		Clear
12-1520°
16 km/h		-1014.1 hPaUV 5
 Medium 		Partly cloudy
Drizzle
15-1819°
15 km/h		0.2 mm1013.5 hPaUV 1
 Low 		Mostly Cloudy
Drizzle
18-2117°
10 km/h		0.1 mm1014.2 hPaMostly Cloudy
Drizzle
21-0015°
5 km/h		0.3 mm1013.9 hPaPartly cloudy
Heavy dew
 Tuesday 28 April 2026 sunrise  07:04   sunset  21:06   Day Length: 14:01 
PeriodIconTemperatureWindPrecipitationPressureUVConditions

48 hours details

 Monday 20 April 2026 sunrise  07:16   sunset  20:57   Day Length: 13:40 
PeriodIconTemperatureWindPrecipitationThunderstorm
probability		Dew PointPressureHumidityUVCloud coverVisibility
19-2020°
10 km/h		-11%13°1010.2 hPa66%51%18 km
20-2119°
9 km/h		-17%14°1011 hPa71%75%16 km
21-2218°
10 km/h		0.2 mm12%14°1011.5 hPa76%76%17 km
22-2318°
9 km/h		-9%14°1011.9 hPa79%81%17 km
23-0017°
8 km/h		-9%14°1011.8 hPa80%81%15 km
 Tuesday 21 April 2026 sunrise  07:15   sunset  20:58   Day Length: 13:43 
PeriodIconTemperatureWindPrecipitationThunderstorm
probability		Dew PointPressureHumidityUVCloud coverVisibility
00-0117°
8 km/h		0.2 mm6%14°1011.7 hPa82%72%17 km
01-0217°
9 km/h		-6%14°1011.7 hPa82%68%17 km
02-0317°
8 km/h		-10%14°1011.4 hPa82%76%14 km
03-0417°
6 km/h		0.4 mm12%14°1011 hPa85%69%16 km
04-0517°
6 km/h		-17%14°1010.6 hPa85%70%16 km
05-0616°
5 km/h		-16%14°1010.1 hPa85%77%16 km
06-0716°
7 km/h		-11%14°1009.8 hPa86%82%16 km
07-0816°
7 km/h		-7%14°1009.7 hPa86%86%16 km
08-0917°
8 km/h		-6%14°1009.4 hPa82%86%16 km
09-1018°
12 km/h		-7%14°1009.3 hPa74%UV 1
 Low 		88%16 km
10-1120°
14 km/h		-9%14°1009.2 hPa66%UV 2
 Low 		88%17 km
11-1222°
16 km/h		-9%14°1009 hPa60%UV 4
 Medium 		85%17 km
12-1322°
18 km/h		-12%13°1008.4 hPa56%UV 5
 Medium 		83%18 km
13-1423°
19 km/h		-12%13°1007.6 hPa53%UV 6
 High 		82%18 km
14-1524°
20 km/h		-19%13°1006.9 hPa51%UV 5
 Medium 		88%19 km
15-1624°
20 km/h		-22%13°1006.3 hPa50%UV 4
 Medium 		93%19 km
16-1724°
20 km/h		-25%13°1006 hPa50%UV 2
 Low 		97%20 km
17-1823°
20 km/h		-37%13°1005.9 hPa51%UV 1
 Low 		99%15 km
18-1922°
10 km/h		0.7 mm35%14°1006.1 hPa61%100%20 km
19-2022°
9 km/h		-40%14°1006.4 hPa61%99%19 km
20-2121°
8 km/h		-45%14°1007.3 hPa64%98%6 km
21-2218°
4 km/h		4.1 mm34%16°1008 hPa87%94%18 km
22-2318°
5 km/h		-33%16°1008.5 hPa84%91%17 km
23-0018°
5 km/h		-38%16°1008.4 hPa84%92%12 km
 Wednesday 22 April 2026 sunrise  07:13   sunset  20:59   Day Length: 13:45 
PeriodIconTemperatureWindPrecipitationThunderstorm
probability		Dew PointPressureHumidityUVCloud coverVisibility
00-0118°
7 km/h		0.8 mm32%16°1008.4 hPa88%77%16 km
01-0218°
7 km/h		-24%15°1008.4 hPa86%67%16 km
02-0317°
6 km/h		-20%15°1008.2 hPa86%56%16 km
03-0417°
5 km/h		-15%15°1007.9 hPa87%42%16 km
04-0517°
5 km/h		-12%15°1007.7 hPa88%35%16 km
05-0617°
4 km/h		-4%15°1008 hPa88%47%15 km
06-0716°
2 km/h		-8%15°1008.5 hPa88%66%15 km
07-0817°
2 km/h		-7%14°1009.3 hPa86%74%15 km
08-0918°
4 km/h		-12%14°1010.2 hPa79%60%15 km
09-1019°
17 km/h		-12%14°1011.2 hPa72%UV 1
 Low 		45%15 km
10-1121°
18 km/h		-11%14°1012.1 hPa66%UV 3
 Medium 		38%16 km
11-1222°
19 km/h		-9%14°1012.8 hPa63%UV 4
 Medium 		39%17 km
12-1322°
19 km/h		-4%14°1013 hPa60%UV 5
 Medium 		39%18 km
13-1422°
19 km/h		-0%14°1013 hPa59%UV 5
 Medium 		43%18 km
14-1522°
18 km/h		-0%14°1013 hPa58%UV 5
 Medium 		58%19 km
15-1622°
17 km/h		-0%14°1013.1 hPa59%UV 4
 Medium 		71%19 km
16-1721°
16 km/h		-7%13°1013.3 hPa62%UV 2
 Low 		79%19 km
17-1820°
15 km/h		-8%13°1013.1 hPa64%UV 1
 Low 		80%19 km
18-1919°
14 km/h		-8%13°1013 hPa68%81%19 km
19-2018°
13 km/h		-8%13°1013.2 hPa72%79%18 km

WXSIM script developed by WeerstationLeuven.   Based on scripts/snippets/icons from: Ken True from SaratogaWeather; Rob from WellingtonWeather; HENKKA from NordicWeather and icons from KDE.  Forecast is created from data by WXSIM. Graphs are drawn using Highcharts