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Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Overcast

82°F

28°C

Humidity 74%
Wind Speed E 6 mph
Barometer 30.08 in (1018.6 mb)
Dewpoint 73°F (23°C)
Visibility 8.00 mi
Heat Index87°F (31°C)
Last update 5 Jul 6:56 am AST
Extended Forecast for

3 Miles WSW Guaynabo PR

  • Today

    Today: Isolated showers before 3pm. Widespread haze. Mostly sunny, with a high near 89. East wind 9 to 17 mph. Chance of precipitation is 20%.

    High: 89 °F

    Isolated
    Showers

  • Tonight

    Tonight: Isolated showers. Widespread haze. Partly cloudy, with a low around 78. East wind around 10 mph. Chance of precipitation is 20%.

    Low: 78 °F

    Isolated
    Showers

  • Monday

    Monday: Scattered showers, mainly after 3pm. Widespread haze before 3pm. Mostly sunny, with a high near 89. Heat index values as high as 102. East wind 13 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    High: 89 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Isolated showers. Widespread haze. Partly cloudy, with a low around 78. East wind around 9 mph. Chance of precipitation is 10%.

    Low: 78 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Isolated showers. Widespread haze. Mostly sunny, with a high near 88. East wind 13 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 88 °F

    Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers, mainly after midnight. Widespread haze before midnight. Partly cloudy, with a low around 77. East wind around 10 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after noon. Mostly cloudy, with a high near 88. East wind 11 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 88 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 78. East southeast wind 10 to 13 mph.

    Low: 78 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers likely, mainly after noon. Partly sunny, with a high near 88. East wind 10 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 88 °F

    Mostly Sunny
    then Showers
    Likely

Detailed Forecast

Today
Isolated showers before 3pm. Widespread haze. Mostly sunny, with a high near 89. East wind 9 to 17 mph. Chance of precipitation is 20%.
Tonight
Isolated showers. Widespread haze. Partly cloudy, with a low around 78. East wind around 10 mph. Chance of precipitation is 20%.
Monday
Scattered showers, mainly after 3pm. Widespread haze before 3pm. Mostly sunny, with a high near 89. Heat index values as high as 102. East wind 13 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Monday Night
Isolated showers. Widespread haze. Partly cloudy, with a low around 78. East wind around 9 mph. Chance of precipitation is 10%.
Tuesday
Isolated showers. Widespread haze. Mostly sunny, with a high near 88. East wind 13 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Tuesday Night
Scattered showers, mainly after midnight. Widespread haze before midnight. Partly cloudy, with a low around 77. East wind around 10 mph. Chance of precipitation is 30%.
Wednesday
Showers likely, mainly after noon. Mostly cloudy, with a high near 88. East wind 11 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Wednesday Night
Partly cloudy, with a low around 78. East southeast wind 10 to 13 mph.
Thursday
Showers likely, mainly after noon. Partly sunny, with a high near 88. East wind 10 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Thursday Night
Partly cloudy, with a low around 78.
Friday
Mostly sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 78.
Saturday
Sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Guaynabo PR
 18.37°N 66.15°W (Elev. 66 ft)
Last Update:
4:07 am AST Jul 5, 2026
Forecast Valid:
7am AST Jul 5, 2026-6pm AST Jul 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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