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 82%
Wind Speed W 8 mph
Barometer 29.81 in (1006.7 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 9 Aug 2:54 am ChST
Extended Forecast for

Umatac GU

High Surf Advisory August 9, 03:41am until August 13, 04:00pm
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory August 9, 03:41am until August 13, 04:00pm

    NOW until 4:00pm Thu

    High Surf Advisory

  • Overnight

    Low: 78 °F

    Isolated
    Showers

  • Sunday

    Sunday: Isolated showers. Mostly sunny, with a high near 89. West southwest wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 89 °F

    Isolated
    Showers

  • Sunday Night

    Sunday Night: Isolated showers. Partly cloudy, with a low around 77. West southwest wind 13 to 18 mph, with gusts as high as 24 mph.

    Low: 77 °F

    Isolated
    Showers

  • Monday

    Monday: Isolated showers. Partly sunny, with a high near 88. West southwest wind 14 to 18 mph, with gusts as high as 24 mph.

    High: 88 °F

    Isolated
    Showers

  • Monday Night

    Monday Night: Scattered showers. 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 30%.

    Low: 79 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 79.

    Low: 79 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 78. West southwest wind around 14 mph, with gusts as high as 18 mph.
Sunday
Isolated showers. Mostly sunny, with a high near 89. West southwest wind 15 to 20 mph, with gusts as high as 25 mph.
Sunday Night
Isolated showers. Partly cloudy, with a low around 77. West southwest wind 13 to 18 mph, with gusts as high as 24 mph.
Monday
Isolated showers. Partly sunny, with a high near 88. West southwest wind 14 to 18 mph, with gusts as high as 24 mph.
Monday Night
Scattered showers. 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 30%.
Tuesday
Scattered showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 79.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 78.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 78.
Friday
Mostly sunny, with a high near 88.
Friday Night
Mostly cloudy, with a low around 78.
Saturday
Partly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Umatac GU
 13.28°N 144.67°E
Last Update:
6:06 pm ChST Aug 8, 2026
Forecast Valid:
3am ChST Aug 9, 2026-6pm ChST Aug 15, 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