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.

Overcast

82°F

28°C

Humidity 90%
Wind Speed W 16 G 24 mph
Barometer 29.69 in (1004.5 mb)
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 4 Aug 2:54 pm ChST
Extended Forecast for

Umatac GU

High Surf Advisory August 4, 03:20pm until August 8, 04:00pm
Wind Advisory August 4, 03:20pm until August 5, 06:00am
Click here for hazard details and duration
High Surf Advisory
Wind Advisory
  •  
    High Surf Advisory August 4, 03:20pm until August 8, 04:00pm
    Wind Advisory August 4, 03:20pm until August 5, 06:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 86 °F

    Scattered
    Showers and
    Breezy

  • Tonight

    Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 77. Breezy, with a west southwest wind 22 to 25 mph, with gusts as high as 32 mph. Chance of precipitation is 50%.

    Low: 77 °F

    Scattered
    Showers and
    Breezy

  • Wednesday

    Wednesday: Scattered showers and thunderstorms. Mostly cloudy, with a high near 86. Breezy, with a west southwest wind 16 to 22 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 86 °F

    Scattered
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 77. West southwest wind 15 to 18 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers and thunderstorms. Partly sunny, with a high near 83. West wind 16 to 18 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    High: 83 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 77.

    Low: 77 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers. Partly sunny, with a high near 82.

    High: 82 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 79.

    Low: 79 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Mostly cloudy, with a high near 86. Breezy, with a west southwest wind 22 to 25 mph, with gusts as high as 32 mph. Chance of precipitation is 50%.
Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 77. Breezy, with a west southwest wind 22 to 25 mph, with gusts as high as 32 mph. Chance of precipitation is 50%.
Wednesday
Scattered showers and thunderstorms. Mostly cloudy, with a high near 86. Breezy, with a west southwest wind 16 to 22 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Wednesday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 77. West southwest wind 15 to 18 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Thursday
Scattered showers and thunderstorms. Partly sunny, with a high near 83. West wind 16 to 18 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 77.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 82.
Friday Night
A chance of showers. Mostly cloudy, with a low around 79.
Saturday
A chance of showers. Partly sunny, with a high near 82.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 79.
Sunday
A chance of showers. Partly sunny, with a high near 82.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 79.
Monday
A chance of showers. Partly sunny, with a high near 82. Breezy.
Monday Night
A chance of showers. Mostly cloudy, with a low around 85. Breezy.
Tuesday
A chance of showers. Mostly cloudy, with a high near 83. Windy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Umatac GU
 13.31°N 144.67°E
Last Update:
6:05 am ChST Aug 4, 2026
Forecast Valid:
3pm ChST Aug 4, 2026-6pm ChST Aug 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