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

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

A Few Clouds

81°F

27°C

Humidity 88%
Wind Speed SW 7 mph
Barometer 29.93 in (1010.5 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 13 Aug 9:54 pm ChST
Extended Forecast for

2 Miles ENE Merizo GU

High Surf Advisory August 13, 10:43pm until August 14, 04:00pm
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory August 13, 10:43pm until August 14, 04:00pm

    NOW until 4:00pm Fri

    High Surf Advisory

  • Tonight

    Low: 77 °F

    Isolated
    Showers

  • Friday

    Friday: Isolated showers. Mostly sunny, with a high near 87. West wind 14 to 20 mph, with gusts as high as 24 mph.

    High: 87 °F

    Isolated
    Showers

  • Friday Night

    Friday Night: Isolated showers. Partly cloudy, with a low around 77. West wind 14 to 16 mph, with gusts as high as 22 mph.

    Low: 77 °F

    Isolated
    Showers

  • Saturday

    Saturday: Isolated showers. Mostly sunny, with a high near 86. West southwest wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 86 °F

    Isolated
    Showers

  • Saturday Night

    Saturday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 77. West southwest wind 16 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Scattered
    Showers

  • Sunday

    Sunday: Scattered showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Scattered
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 76.

    Low: 76 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers. Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    Showers

Detailed Forecast

Tonight
Isolated showers. Partly cloudy, with a low around 77. West southwest wind around 14 mph.
Friday
Isolated showers. Mostly sunny, with a high near 87. West wind 14 to 20 mph, with gusts as high as 24 mph.
Friday Night
Isolated showers. Partly cloudy, with a low around 77. West wind 14 to 16 mph, with gusts as high as 22 mph.
Saturday
Isolated showers. Mostly sunny, with a high near 86. West southwest wind 15 to 20 mph, with gusts as high as 25 mph.
Saturday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 77. West southwest wind 16 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Sunday
Scattered showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 76.
Monday
A chance of showers. Partly sunny, with a high near 85.
Monday Night
A chance of showers. Mostly cloudy, with a low around 76.
Tuesday
Partly sunny, with a high near 86.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 77.
Wednesday
A chance of showers. Partly sunny, with a high near 86.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 77.
Thursday
A chance of showers. Partly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Merizo GU
 13.28°N 144.69°E
Last Update:
6:06 pm ChST Aug 13, 2026
Forecast Valid:
10pm ChST Aug 13, 2026-6pm ChST Aug 20, 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