Weather Forecast for Tumon
Guam, United States of America
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Current Weather - Tumon: 27°C
Current Weather - Tumon: 27°C
Guam, United States of America
Partly cloudy
Feels like 32°C
Wind
53 km/h WSW
Humidity
84%
Pressure
995 mb
UV Index
0
Visibility
16 km
Moderate rain
Thursday, April 16, 2026
High
28°C
Low
27°C
Rain Chance
95%
Hourly Forecast
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
28°C
28°C
28°C
28°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
27°C
Day Statistics
Maximum Wind
56 km/h
Humidity
86%
Precipitation
8 mm
UV Index
2
Visibility
10 km
Rain Chance
95%
Snow Chance
0%
Sun & Moon
Sunrise
06:07 AM
Sunset
06:34 PM
Moonrise
04:49 AM
Moonset
05:22 PM
Moon Phase
Waning Crescent
Moon Illumination
3%
Air Quality
PM2.5
7.5
μg/m³
PM10
11.4
μg/m³
NO₂
1.1
μg/m³
O₃
53.7
μg/m³
SO₂
1
μg/m³
CO
137.9
μg/m³
Weather Alerts
Coastal Flood Warning issued April 15 at 9:43PM ChST until April 16 at 5:00AM ChST by NWS Tiyan GU
* WHAT...For the Coastal Flood Warning, significant coastal flooding up to 4 feet. For the High Surf Warning, dangerously large breaking waves of 12 to 16 feet. * WHERE...South, west and north facing reefs and shorelines. * WHEN...For the Coastal Flood Warning, until 5 AM ChST Thursday. For the High Surf Warning, until 5 PM ChST Friday. * IMPACTS...Some roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...As TY Sinlaku continues to move away and wind driven waves decrease, the primary swell and highest surf will become southwest. Seas will be slow to subside over the next couple of days. A High Surf Advisory may continue into the weekend.
Everyone should remain out of the water due to life-threatening surf conditions. Stay off of jetties, piers, and other waterside infrastructure.
High Surf Warning issued April 15 at 9:43PM ChST until April 17 at 5:00PM ChST by NWS Tiyan GU
* WHAT...For the Coastal Flood Warning, significant coastal flooding up to 4 feet. For the High Surf Warning, dangerously large breaking waves of 12 to 16 feet. * WHERE...South, west and north facing reefs and shorelines. * WHEN...For the Coastal Flood Warning, until 5 AM ChST Thursday. For the High Surf Warning, until 5 PM ChST Friday. * IMPACTS...Some roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...As TY Sinlaku continues to move away and wind driven waves decrease, the primary swell and highest surf will become southwest. Seas will be slow to subside over the next couple of days. A High Surf Advisory may continue into the weekend.
Everyone should remain out of the water due to life-threatening surf conditions. Stay off of jetties, piers, and other waterside infrastructure.
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