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Hazardous Weather Conditions

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Mostly Cloudy

83°F

28°C

Humidity 82%
Wind Speed N 10 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 20 Sep 12:56 pm AST
Extended Forecast for

Luis Muñoz Marín International Airport PR

Heat Advisory September 20, 01:55pm until September 20, 03:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 20, 01:55pm until September 20, 03:00pm

    NOW until 3:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 92 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers, mainly after midnight. Partly cloudy, with a low around 79. South southeast wind 5 to 8 mph. Chance of precipitation is 30%.

    Low: 79 °F

    Scattered
    Showers

  • Monday

    Monday: Scattered showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 91. Heat index values as high as 103. East wind 6 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    High: 91 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers, mainly between midnight and 3am. Partly cloudy, with a low around 79. Southeast wind 5 to 8 mph. Chance of precipitation is 50%.

    Low: 79 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers, with thunderstorms also possible after noon. Partly sunny, with a high near 91. East wind 8 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.

    High: 91 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 79. East southeast wind 7 to 9 mph. Chance of precipitation is 50%.

    Low: 79 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers, mainly before noon. Mostly sunny, with a high near 91. East southeast wind 8 to 10 mph. Chance of precipitation is 40%.

    High: 91 °F

    Scattered
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 79. East southeast wind 6 to 9 mph.

    Low: 79 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Partly sunny, with a high near 92. Heat index values as high as 105. East wind around 15 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Scattered showers, mainly after midnight. Partly cloudy, with a low around 79. South southeast wind 5 to 8 mph. Chance of precipitation is 30%.
Monday
Scattered showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 91. Heat index values as high as 103. East wind 6 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Scattered showers, mainly between midnight and 3am. Partly cloudy, with a low around 79. Southeast wind 5 to 8 mph. Chance of precipitation is 50%.
Tuesday
Scattered showers, with thunderstorms also possible after noon. Partly sunny, with a high near 91. East wind 8 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Tuesday Night
Scattered showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 79. East southeast wind 7 to 9 mph. Chance of precipitation is 50%.
Wednesday
Scattered showers, mainly before noon. Mostly sunny, with a high near 91. East southeast wind 8 to 10 mph. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 79. East southeast wind 6 to 9 mph.
Thursday
Scattered showers. Partly sunny, with a high near 92. East wind 8 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Thursday Night
Scattered showers. Partly cloudy, with a low around 79. Chance of precipitation is 30%.
Friday
Scattered showers. Partly sunny, with a high near 92. Chance of precipitation is 50%.
Friday Night
Partly cloudy, with a low around 80.
Saturday
Scattered showers. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Luis Muñoz Marín International Airport PR
 18.44°N 66.02°W (Elev. 7 ft)
Last Update:
7:36 am AST Sep 20, 2026
Forecast Valid:
1pm AST Sep 20, 2026-6pm AST Sep 26, 2026
 
Forecast Discussion
 
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Additional Resources

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