San Sebastián

, Departamento de Retalhuleu, Guatemala

Forecast Summary

The next few hours will be mostly clear, with today reaching 31°C and dropping to 22°C. The coming days will be drizzle from afternoon until night.

Current Weather

21°

Mostly Clear

Feels Like

23°

Min

21°

Max

31°

Compared to Yesterday

Unlock Historical Data

Compare today's weather with yesterday's data and track temperature trends over time.

Upgrade Now

Hourly Forecast

Weather forecast for the next 48 hours.

22° 21° 24° 26° 29° 29° 30° 31° 31° 31° 30° 30° 29° 28° 27° 26° 24° 24° 24° 23° 23° 22° 22° 22° 22° 22° 24° 26° 29° 30° 32° 33° 32° 31° 30° 29° 29° 28° 27° 25° 24° 24° 23° 23° 22° 21° 20° 20°

7%

14%

22%

43%

65%

86%

81%

76%

71%

54%

38%

22%

14%

7%

31%

57%

84%

73%

61%

49%

37%

24%

12%

8%

5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
Today
Tomorrow
Thursday

UV Index

No protection needed

0 Low
Low Extreme

Humidity

Current air moisture level

80% Humid
Low High

Daylight Hours

12 hours 1 minutes of sunlight today

06:12

Sunrise

18:14

Sunset

Daily Forecast

Weather forecast for the next 8 days.

Today

21°
31°

Wednesday

22°
33°

Thursday

20°
34°

Friday

20°
34°

Saturday

22°
34°

Sunday

20°
34°

Monday

21°
34°

Tuesday

21°
34°

Air Quality Data Available

Upgrade to access real-time air quality data for San Sebastián.

Upgrade Now
Powered by Airpult

Frequently asked questions about weather in San Sebastián

How warm does it get in San Sebastián?

The warmest month in San Sebastián is April, with average high temperatures of 32°C. The average temperature during this period is around 27°C.

How cold does it get in San Sebastián?

The coldest month in San Sebastián is January, with average low temperatures of 20°C. The average temperature during this period is around 25°C.

What is the wettest time of year in San Sebastián?

The wettest month in San Sebastián is June, with an average of 552mm of precipitation.

What is the driest time of year in San Sebastián?

The driest month in San Sebastián is February, with an average of 16mm of precipitation.

View full climate insights for San Sebastián →

Stay informed

Latest Weather News

  ·  

   

  ·  

   

  ·  

   

  ·  

   

Airpult

Get accurate weather forecasts worldwide with real-time updates and severe weather alerts. Covering 6M+ locations with precise, reliable weather data.

© 2026 Samuenti GmbH. All rights reserved.

gb English
Metric (°C, km/h)