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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.

Partly Cloudy

84°F

29°C

Humidity 72%
Wind Speed E 10 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 74°F (23°C)
Visibility 8.00 mi
Heat Index91°F (33°C)
Last update 16 Aug 6:56 pm AST
Extended Forecast for

2 Miles WNW Guaynabo PR

  • Tonight

    Tonight: Isolated showers between 9pm and 3am. Widespread haze before 9pm. Mostly clear, with a low around 79. East wind 8 to 11 mph. Chance of precipitation is 10%.

    Low: 79 °F

    Isolated
    Showers

  • Monday

    Monday: Isolated showers before 3pm. Sunny, with a high near 90. Heat index values as high as 105. East northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.

    High: 90 °F

    Isolated
    Showers

  • Monday Night

    Monday Night: Isolated showers after midnight. Mostly clear, with a low around 79. East wind 7 to 9 mph. Chance of precipitation is 20%.

    Low: 79 °F

    Mostly Clear
    then Isolated
    Showers

  • Tuesday

    Tuesday: Scattered showers, mainly after noon. Mostly sunny, with a high near 91. Heat index values as high as 108. East northeast wind 7 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 91 °F

    Isolated
    Showers then
    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Clear, with a low around 78. East wind 5 to 10 mph.

    Low: 78 °F

    Clear

  • Wednesday

    Wednesday: Isolated showers after noon. Mostly sunny, with a high near 90. East wind 7 to 14 mph. Chance of precipitation is 20%.

    High: 90 °F

    Sunny then
    Isolated
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Mostly cloudy, with a low around 78. Southeast wind around 7 mph. Chance of precipitation is 50%.

    Low: 78 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers. Mostly sunny, with a high near 91. East wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Chance of precipitation is 50%.

    High: 91 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 79. East wind around 10 mph.

    Low: 79 °F

    Partly Cloudy

Detailed Forecast

Tonight
Isolated showers between 9pm and 3am. Widespread haze before 9pm. Mostly clear, with a low around 79. East wind 8 to 11 mph. Chance of precipitation is 10%.
Monday
Isolated showers before 3pm. Sunny, with a high near 90. Heat index values as high as 105. East northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.
Monday Night
Isolated showers after midnight. Mostly clear, with a low around 79. East wind 7 to 9 mph. Chance of precipitation is 20%.
Tuesday
Scattered showers, mainly after noon. Mostly sunny, with a high near 91. Heat index values as high as 108. East northeast wind 7 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Tuesday Night
Clear, with a low around 78. East wind 5 to 10 mph.
Wednesday
Isolated showers after noon. Mostly sunny, with a high near 90. East wind 7 to 14 mph. Chance of precipitation is 20%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 78. Southeast wind around 7 mph. Chance of precipitation is 50%.
Thursday
Scattered showers. Mostly sunny, with a high near 91. East wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Chance of precipitation is 50%.
Thursday Night
Partly cloudy, with a low around 79. East wind around 10 mph.
Friday
Sunny, with a high near 92.
Friday Night
Partly cloudy, with a low around 79.
Saturday
Mostly sunny, with a high near 91.
Saturday Night
Partly cloudy, with a low around 79.
Sunday
Mostly sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Guaynabo PR
 18.4°N 66.15°W (Elev. 85 ft)
Last Update:
2:47 pm AST Aug 16, 2026
Forecast Valid:
7pm AST Aug 16, 2026-6pm AST Aug 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation