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Umatac, Guam Weather Forecast
Umatac, GU Weather Forecast Dated: 728 PM Tue Sep 22 2026
Expect a very warm period with more clouds than sun and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate. A few thunderstorms possible.
Tuesday, September 22, 2026
Mid-Morning
28°C 82°F
Light Showers
Mid-Afternoon
28°C 82°F
Scattered Showers
Early-Evening
28°C 82°F
Light Showers
Warm and summery around 28°C 82°F (feels like 32°C 89°F), periods of heavy rain and gusty conditions, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds turning from the S to the SSE at 23 km/h 14 mph.
Wednesday, September 23, 2026
Mid-Morning
28°C 83°F
Light Showers
Mid-Afternoon
28°C 82°F
Light Showers
Early-Evening
28°C 83°F
Light Showers
Quite warm reaching 28°C 82°F, feeling like 32°C 90°F during peak afternoon, persistent showers off and on through the day, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds switching from the S to the SSW at 21 km/h 13 mph.
Thursday, September 24, 2026
Mid-Morning
28°C 83°F
Light Showers
Mid-Afternoon
28°C 83°F
Light Showers
Early-Evening
28°C 83°F
Light Showers
Very warm near 28°C 83°F, though humidity makes it feel like 33°C 91°F, on-and-off showers throughout the day, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds moving from the SW to the WSW at 15 km/h 9 mph.
Friday, September 25, 2026
Mid-Morning
28°C 82°F
Light Showers
Mid-Afternoon
28°C 83°F
Light Showers
Early-Evening
28°C 83°F
Scattered Showers
Warm and summery around 28°C 83°F (feels like 32°C 90°F), periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds out of the WSW at 15 km/h 10 mph.
Saturday, September 26, 2026
Mid-Morning
28°C 83°F
Light Showers
Mid-Afternoon
28°C 83°F
Light Showers
Early-Evening
28°C 83°F
Scattered Showers
Quite warm reaching 28°C 83°F, feeling like 33°C 91°F during peak afternoon, scattered downpours possible, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds shifting from the W to the NW at 16 km/h 10 mph.
Sunday, September 27, 2026
Mid-Morning
28°C 82°F
Overcast
Mid-Afternoon
28°C 82°F
Light Showers
Early-Evening
28°C 82°F
Light Showers
Very warm near 28°C 82°F, though humidity makes it feel like 31°C 88°F, dry early, with showers continuing through afternoon and evening, with steady humidity and steady pressure. Winds NW at 13 km/h 8 mph.
Monday, September 28, 2026
Mid-Morning
27°C 81°F
Light Showers
Mid-Afternoon
28°C 83°F
Scattered Showers
Early-Evening
28°C 82°F
Scattered Showers
Warm and summery around 28°C 83°F (feels like 32°C 89°F), periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds switching from the NW to the NNW at 14 km/h 9 mph.
Tuesday, September 29, 2026
Mid-Morning
28°C 82°F
Scattered Showers
Mid-Afternoon
29°C 83°F
Scattered Showers
Early-Evening
28°C 83°F
Light Showers
Quite warm reaching 29°C 83°F, feeling like 32°C 89°F during peak afternoon, scattered downpours possible, with steady humidity and steady pressure.
Wednesday, September 30, 2026
Mid-Morning
28°C 83°F
Overcast
Mid-Afternoon
29°C 85°F
Scattered Showers
Early-Evening
28°C 82°F
Scattered Showers
Very warm near 29°C 85°F, though humidity makes it feel like 33°C 92°F, locally heavy downpours at times, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds moving from the N to the NNW at 15 km/h 9 mph.
Thursday, October 1, 2026
Mid-Morning
29°C 83°F
Partly Cloudy
Mid-Afternoon
29°C 85°F
Scattered Showers
Early-Evening
29°C 83°F
Sunny
Warm and summery around 29°C 85°F (feels like 33°C 91°F), periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds NW at 17 km/h 11 mph.
Friday, October 2, 2026
Mid-Morning
28°C 83°F
Cloudy
Mid-Afternoon
29°C 84°F
Scattered Showers
Early-Evening
28°C 83°F
Partly Cloudy
Quite warm reaching 29°C 84°F, feeling like 33°C 92°F during peak afternoon, scattered downpours possible, with increasing humidity and steady pressure. Winds shifting from the W to the WSW at 14 km/h 9 mph.
Saturday, October 3, 2026
Mid-Morning
28°C 83°F
Scattered Showers
Mid-Afternoon
29°C 83°F
Scattered Showers
Early-Evening
28°C 83°F
Light Showers
Very warm near 29°C 83°F, though humidity makes it feel like 33°C 91°F, locally heavy downpours at times, with steady humidity and steady pressure.
Sunday, October 4, 2026
Mid-Morning
28°C 83°F
Scattered Showers
Mid-Afternoon
29°C 84°F
Scattered Showers
Early-Evening
28°C 83°F
Light Showers
Warm and summery around 29°C 84°F (feels like 33°C 92°F), periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds turning from the NW to the NNW at 13 km/h 8 mph.
Monday, October 5, 2026
Mid-Morning
28°C 83°F
Sunny
Mid-Afternoon
30°C 85°F
Sunny
Early-Evening
29°C 83°F
Sunny
Quite warm reaching 30°C 85°F, feeling like 33°C 92°F during peak afternoon, sunny throughout the day, with steady humidity and steady pressure.
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