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

79°F

26°C

Humidity 88%
Wind Speed W 8 mph
Barometer 29.72 in (1003.7 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 7 Aug 2:54 am ChST
Extended Forecast for

Umatac GU

High Surf Advisory August 7, 03:26am until August 10, 04:00pm
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory August 7, 03:26am until August 10, 04:00pm

    NOW until 4:00pm Mon

    High Surf Advisory

  • Overnight

    Low: 77 °F

    Scattered
    Showers

  • Friday

    Friday: Scattered showers and thunderstorms. Mostly cloudy, with a high near 84. Breezy, with a west southwest wind 17 to 22 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.

    High: 84 °F

    Scattered
    Showers and
    Breezy

  • Friday Night

    Friday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 79. West southwest wind 18 to 21 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 79 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers and thunderstorms. Mostly cloudy, with a high near 83. West southwest wind 16 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 83 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 79. West southwest wind 13 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    Low: 79 °F

    Scattered
    Showers

  • Sunday

    Sunday: Scattered showers. Mostly cloudy, with a high near 83. Chance of precipitation is 40%.

    High: 83 °F

    Scattered
    Showers

  • Sunday Night

    Sunday Night: Scattered showers. Mostly cloudy, with a low around 79. Chance of precipitation is 40%.

    Low: 79 °F

    Scattered
    Showers

  • Monday

    Monday: A chance of showers. Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    Showers

Detailed Forecast

Overnight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 77. West wind 10 to 15 mph increasing to 16 to 21 mph. Winds could gust as high as 26 mph. Chance of precipitation is 40%.
Friday
Scattered showers and thunderstorms. Mostly cloudy, with a high near 84. Breezy, with a west southwest wind 17 to 22 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Friday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 79. West southwest wind 18 to 21 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Saturday
Scattered showers and thunderstorms. Mostly cloudy, with a high near 83. West southwest wind 16 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Saturday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 79. West southwest wind 13 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Sunday
Scattered showers. Mostly cloudy, with a high near 83. Chance of precipitation is 40%.
Sunday Night
Scattered showers. Mostly cloudy, with a low around 79. Chance of precipitation is 40%.
Monday
A chance of showers. Partly sunny, with a high near 84.
Monday Night
A chance of showers. Mostly cloudy, with a low around 79.
Tuesday
A chance of showers. Partly sunny, with a high near 84. Breezy.
Tuesday Night
Mostly cloudy, with a low around 79. Breezy.
Wednesday
A chance of showers. Partly sunny, with a high near 84. Breezy.
Wednesday Night
Mostly cloudy, with a low around 79. Breezy.
Thursday
Partly sunny, with a high near 85. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Umatac GU
 13.28°N 144.67°E
Last Update:
2:08 am ChST Aug 7, 2026
Forecast Valid:
3am ChST Aug 7, 2026-6pm ChST Aug 13, 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