Pago Pago, American Samoa Weather Conditions

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Current Conditions

  • 82°
  • Mostly Cloudy
  • Wind: South 12 mph
  • Humidity: 74%
  • Visibility: 10.0 miles
  • Dew Point: 73°
  • Pressure: 29.91 in. +
  • Heat Index: 87

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Next 12 Hours

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11  pm
2  am
5  am
8  am
Partly Cloudy
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Partly Cloudy
  • High: 81 °
  • Low: 77 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 81 °
  • Low: 76 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 81 °
  • Low: 76 °
  • Partly Cloudy
  • Tuesday
  • Clear
  • High: 81 °
  • Low: 77 °
  • Clear
  • Wednesday
  • Clear
  • High: 82 °
  • Low: 76 °
  • Clear

Forecast for Pago Pago, American Samoa

Updated: 9:15 am SST on December 07, 2005

  • Today

    Occasional showers with isolated thunderstorms. Highs in the mid 80s. Variable winds 10 mph...with higher gusts in showers.

  • Tonight and Thursday

    Scattered showers with isolated thunderstorms. Lows near 80. High near 90. Variable winds 10 mph.

  • Friday and Saturday

    Occasional showers. Highs in the upper 80s. Lows near 80. Variable winds 10 mph.

  • Sunday

    A few showers. Highs near 90. Northwest winds 10 to 15 mph.

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NWS Forecaster Discussion

Area forecast discussion...updated 
National Weather Service tiyan GU 
620 am chst Sat Jul 4 2015 

Updated to include micronesia discussion 

Synopsis...northeast winds and scattered showers and isolated 
thunderstorm will prevail today. 


Chan-Hom remains a tropical storm this morning. Again the track is 
the big question. Previous forecast tracks had Chan-Hom passing 
close to Guam then through the Tinian channel. The latest track 
forecast shows Chan-Hom passing north of Saipan. 

Forecast reflects the change with Guam and Rota probably only 
getting tropical storm force winds briefly at best. Tinian and 
Saipan may briefly see typhoon force winds Sunday night. Guam and 
Rota are still under a typhoon watch this morning. As is apparent 
from watching this system over the last few days is that the track 
forecast has changed often. Will leave Guam and Rota in the watch 
until the forecast track is better behaved. 

The intensity forecast is not so certain either as Chan-Hom is 
very disorganized this morning. Will it regain typhoon intensity 
as predicted is a big question. Again because of the big 
uncertainty typhoon conditions are possible at some point through 
Sunday night. 

After Chan-Hom passage the marianas will be in southwest winds 
as the storm will drag the monsoon trough north of the local area. 


buoy data showed an east swell over the marianas this morning. 
There is winds generated along the monsoon trough south of the 
marianas is pushing waves in this direction generating a southwest 
swell. The buoy data indicated seas of 8 to 11 feet this morning. 
Expect little change in the combined seas through tonight. Seas 
probably will not change very much across Guam and Rota through 
the forecast. If Chan-Hom passes by Tinian and Saipan seas there 
may briefly reach 15 to 20 feet Sunday night. 


Eastern micronesia... 
Tropical Storm Chan-Hom centered east-southeast of Guam near 11n149e 
is behaving more like a monsoonal system with a vast wind field 
between the Equator and 20n. The strongest winds are concentrated 
north and south of the center with weaker winds near the center. 
Fresh to strong monsoon winds south of Chan-Hom are going to 
maintain unstable weather near Chuuk and Pohnpei through Sunday. 
Farther east...newly formed tropical depression 11w centered near 
10n171e is drifting northwestward over the northern Marshall Islands 
with deep convection flaring up near the center. Despite fresh 
southwest winds feeding into 11w...subsident air just south of 11w 
is going to promote drier weather near Majuro through this evening. 
Being farther away from the convection...these same winds should 
keep a few thunderstorms near Kosrae through tonight. 

Once Chan-Hom has drifted farther northwest of Chuuk and Pohnpei 
Sunday afternoon...11w will begin to have a bigger influence across 
Chuuk...Pohnpei and Kosrae. This will prolong showery weather near 
these three locales through Monday. Once 11w has passed north of these 
locales...moderate south winds should allow less shower coverage by 
Monday. For Majuro...moderate trade winds should begin to usher in 
fair weather from Sunday on. 

High surf and hazardous seas for small craft will linger near Majuro 
and Kosrae until Sunday...Pohnpei and Chuuk through Monday. Minor 
coastal inundations are still possible near Majuro through this 
evening. Both surf and seas across all locations are expected to 
subside below hazardous levels by Tuesday. 


Western micronesia... 
discussion for the Chuuk forecast is included under the eastern 
micronesia section above due to similar synoptic features. 

The large monsoonal wind field of Tropical Storm Chan-Hom will 
sustain fresh to occasional strong southwest to west winds across 
the Republic of Palau and Yap state over the next few days. 
Anticipate scattered heavy showers near Yap...and widely scattered 
showers near Koror through Monday. As Chan-Hom finally pulls 
northwestward over the Philippine Sea early next week...monsoonal 
winds might begin to decrease over the area. 

Southwest swell and wind waves are going to maintain hazardous surf 
and seas for small craft across Palau and Yap through at least Monday. 


Gum watches/warnings/advisories... 
GU...typhoon watch for guz001>004. 

Marianas waters...typhoon watch for pmz151>154. 




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