National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Partly Cloudy

88°F

31°C

Humidity 66%
Wind Speed NE 18 G 24 mph
Barometer 29.99 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 17 Aug 4:56 pm AST
Extended Forecast for

Humacao PR

  • This Afternoon

    This Afternoon: Isolated showers. Mostly sunny, with a high near 88. East wind around 10 mph. Chance of precipitation is 10%.

    High: 88 °F

    Isolated
    Showers

  • Tonight

    Tonight: Isolated showers. Partly cloudy, with a low around 76. East northeast wind around 7 mph. Chance of precipitation is 20%.

    Low: 76 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Isolated showers between 9am and 3pm. Sunny, with a high near 88. East wind 9 to 11 mph. Chance of precipitation is 20%.

    High: 88 °F

    Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers, with thunderstorms also possible after 3am. Partly cloudy, with a low around 77. East northeast wind around 7 mph. Chance of precipitation is 50%.

    Low: 77 °F

    Isolated
    Showers then
    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers and thunderstorms. Partly sunny, with a high near 88. Southeast wind 6 to 9 mph. Chance of precipitation is 50%.

    High: 88 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Mostly cloudy, with a low around 77. East wind 6 to 8 mph. Chance of precipitation is 50%.

    Low: 77 °F

    Scattered
    Showers

  • Thursday

    Thursday: Showers likely, mainly before noon. Partly sunny, with a high near 88. East wind 11 to 13 mph. Chance of precipitation is 60%.

    High: 88 °F

    Showers
    Likely then
    Scattered
    Showers

  • Thursday Night

    Thursday Night: Scattered showers. Partly cloudy, with a low around 78. East wind around 10 mph. Chance of precipitation is 30%.

    Low: 78 °F

    Scattered
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 88. East wind 10 to 13 mph.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Isolated showers. Mostly sunny, with a high near 88. East wind around 10 mph. Chance of precipitation is 10%.
Tonight
Isolated showers. Partly cloudy, with a low around 76. East northeast wind around 7 mph. Chance of precipitation is 20%.
Tuesday
Isolated showers between 9am and 3pm. Sunny, with a high near 88. East wind 9 to 11 mph. Chance of precipitation is 20%.
Tuesday Night
Scattered showers, with thunderstorms also possible after 3am. Partly cloudy, with a low around 77. East northeast wind around 7 mph. Chance of precipitation is 50%.
Wednesday
Scattered showers and thunderstorms. Partly sunny, with a high near 88. Southeast wind 6 to 9 mph. Chance of precipitation is 50%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 77. East wind 6 to 8 mph. Chance of precipitation is 50%.
Thursday
Showers likely, mainly before noon. Partly sunny, with a high near 88. East wind 11 to 13 mph. Chance of precipitation is 60%.
Thursday Night
Scattered showers. Partly cloudy, with a low around 78. East wind around 10 mph. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 88. East wind 10 to 13 mph.
Friday Night
Scattered showers. Mostly cloudy, with a low around 77. Chance of precipitation is 40%.
Saturday
Scattered showers. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Saturday Night
Scattered showers. Partly cloudy, with a low around 77. Chance of precipitation is 30%.
Sunday
Scattered showers. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Sunday Night
Scattered showers. Partly cloudy, with a low around 77. Chance of precipitation is 30%.
Monday
Scattered showers. Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Humacao PR
 18.17°N 65.83°W (Elev. 476 ft)
Last Update:
3:46 pm AST Aug 17, 2026
Forecast Valid:
5pm AST Aug 17, 2026-6pm AST Aug 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation