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

Ponce, Mercedita Airport (TJPS)

Lat: 18.02°NLon: 66.57°WElev: 26ft.

79°F

26°C

Humidity 84%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 14 Sep 1:55 am AST
Extended Forecast for

Guanica PR

  • Overnight

    Overnight: Mostly clear, with a low around 75. East wind around 7 mph.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Isolated showers before 9am, then isolated showers after noon. Sunny, with a high near 91. Heat index values as high as 103. Light east wind becoming east southeast 12 to 17 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 20%.

    High: 91 °F

    Isolated
    Showers

  • Monday Night

    Monday Night: Clear, with a low around 75. East wind 5 to 9 mph.

    Low: 75 °F

    Clear

  • Tuesday

    Tuesday: Scattered showers after noon. Mostly sunny, with a high near 94. Heat index values as high as 105. East southeast wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 30%.

    High: 94 °F

    Sunny then
    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Clear, with a low around 74. East northeast wind 6 to 10 mph.

    Low: 74 °F

    Clear

  • Wednesday

    Wednesday: Isolated showers after noon. Sunny, with a high near 94. East southeast wind 13 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 10%.

    High: 94 °F

    Sunny then
    Isolated
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 75. East wind 8 to 10 mph.

    Low: 75 °F

    Partly Cloudy

  • Thursday

    Thursday: Scattered showers, mainly after noon. Mostly sunny, with a high near 94. East southeast wind 14 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 50%.

    High: 94 °F

    Mostly Sunny
    then
    Scattered
    Showers

  • Thursday Night

    Thursday Night: Scattered showers. Partly cloudy, with a low around 77. East wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Scattered
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 75. East wind around 7 mph.
Monday
Isolated showers before 9am, then isolated showers after noon. Sunny, with a high near 91. Heat index values as high as 103. Light east wind becoming east southeast 12 to 17 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 20%.
Monday Night
Clear, with a low around 75. East wind 5 to 9 mph.
Tuesday
Scattered showers after noon. Mostly sunny, with a high near 94. Heat index values as high as 105. East southeast wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 30%.
Tuesday Night
Clear, with a low around 74. East northeast wind 6 to 10 mph.
Wednesday
Isolated showers after noon. Sunny, with a high near 94. East southeast wind 13 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 10%.
Wednesday Night
Partly cloudy, with a low around 75. East wind 8 to 10 mph.
Thursday
Scattered showers, mainly after noon. Mostly sunny, with a high near 94. East southeast wind 14 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 50%.
Thursday Night
Scattered showers. Partly cloudy, with a low around 77. East wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Friday
Scattered showers, mainly before noon. Mostly sunny, with a high near 94. Chance of precipitation is 30%.
Friday Night
Clear, with a low around 76.
Saturday
Scattered showers. Mostly sunny, with a high near 94. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 76.
Sunday
Mostly sunny, with a high near 94.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Guanica PR
 17.97°N 66.92°W (Elev. 16 ft)
Last Update:
1:57 am AST Sep 14, 2026
Forecast Valid:
2am AST Sep 14, 2026-6pm AST Sep 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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