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

Hazardous Weather Conditions

Current conditions at

Ponce, Mercedita Airport (TJPS)

Lat: 18.02°NLon: 66.57°WElev: 26ft.

Fair with Haze

90°F

32°C

Humidity 67%
Wind Speed SE 10 mph
Barometer 29.99 in
Dewpoint 77°F (25°C)
Visibility 6.00 mi
Heat Index104°F (40°C)
Last update 12 Aug 9:55 am AST
Extended Forecast for

Guanica PR

Heat Advisory until August 12, 04:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 12, 04:00pm

    NOW until 4:00pm Wed

    Heat Advisory

  • Today

    High: 93 °F

    Isolated
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely before 3am, then isolated showers. Widespread haze after 3am. Mostly cloudy, with a low around 77. East wind 13 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    Low: 77 °F

    Showers
    Likely

  • Thursday

    Thursday: Isolated showers before noon. Widespread haze. Sunny, with a high near 92. Heat index values as high as 105. East southeast wind 18 to 22 mph, with gusts as high as 39 mph. Chance of precipitation is 10%.

    High: 92 °F

    Isolated
    Showers then
    Haze

  • Thursday Night

    Thursday Night: Widespread haze. Mostly clear, with a low around 77. East wind 13 to 16 mph, with gusts as high as 28 mph.

    Low: 77 °F

    Haze

  • Friday

    Friday: Sunny, with a high near 93. East southeast wind 13 to 23 mph, with gusts as high as 40 mph.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. East northeast wind 7 to 13 mph.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 94. East southeast wind 7 to 12 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 94 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 76. Northeast wind 6 to 9 mph.

    Low: 76 °F

    Clear

Detailed Forecast

Today
Isolated showers before 3pm. Widespread haze. Mostly sunny, with a high near 93. Heat index values as high as 109. East southeast wind 15 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely before 3am, then isolated showers. Widespread haze after 3am. Mostly cloudy, with a low around 77. East wind 13 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Thursday
Isolated showers before noon. Widespread haze. Sunny, with a high near 92. Heat index values as high as 105. East southeast wind 18 to 22 mph, with gusts as high as 39 mph. Chance of precipitation is 10%.
Thursday Night
Widespread haze. Mostly clear, with a low around 77. East wind 13 to 16 mph, with gusts as high as 28 mph.
Friday
Sunny, with a high near 93. East southeast wind 13 to 23 mph, with gusts as high as 40 mph.
Friday Night
Mostly clear, with a low around 75. East northeast wind 7 to 13 mph.
Saturday
Mostly sunny, with a high near 94. East southeast wind 7 to 12 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 37 mph.
Saturday Night
Clear, with a low around 76. Northeast wind 6 to 9 mph.
Sunday
Showers likely after noon. Mostly sunny, with a high near 92. East wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 70%.
Sunday Night
Partly cloudy, with a low around 76.
Monday
Showers likely. Mostly cloudy, with a high near 91. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 75.
Tuesday
Scattered showers. Partly sunny, with a high near 94. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Guanica PR
 17.97°N 66.92°W (Elev. 16 ft)
Last Update:
7:09 am AST Aug 12, 2026
Forecast Valid:
10am AST Aug 12, 2026-6pm AST Aug 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation