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Tiyan, GU Local Forecast Office

14NM SSW Merizo GU

Marine Point Forecast

[NOTICE]

Tonight
Low: 85 °F
NE 10kt
3ft
Friday
High: 87 °F
NE 8kt
3ft
Friday Night
Low: 85 °F
N 10kt
3ft
Independence Day
High: 87 °F
N 11kt
6ft
Saturday Night
Low: 85 °F
N 15kt
12ft
Sunday
High: 86 °F
NW 22kt
10ft
Sunday Night
Low: 84 °F
⇑NW 40kt
23ft
Monday
High: 86 °F
W 46kt
24ft
Monday Night
Low: 84 °F
SSW 43kt
22ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:06 pm ChST Jul 2, 2026
Forecast Valid: 10pm ChST Jul 2, 2026-6pm ChST Jul 9, 2026

View Nearby Observations

Detailed Forecast

...HEAVY SHOWERS, DAMAGING WINDS, AND DANGEROUS SEAS ANTICIPATED

Tonight

NE wind 8 to 10 kt. Scattered showers. Waves around 3 ft.

Friday

NE wind 6 to 8 kt. Scattered showers after noon. Waves around 3 ft.

Friday Night

N wind 7 to 10 kt. Partly cloudy. Waves around 3 ft.

Independence Day

N wind 8 to 11 kt. Scattered showers and thunderstorms after noon. Waves around 6 ft.

Saturday Night

N wind 11 to 15 kt. Scattered showers and thunderstorms. Waves around 12 ft.

Sunday

NW wind 15 to 22 kt, with gusts as high as 29 kt. Scattered showers and thunderstorms. Waves around 10 ft.

Sunday Night

NW wind 22 to 27 kt increasing to 35 to 40 kt after midnight. Winds could gust as high as 55 kt. Showers likely and possibly a thunderstorm. Waves around 23 ft.

Monday

WNW wind 41 to 46 kt becoming SW in the afternoon. Winds could gust as high as 60 kt. Scattered showers and thunderstorms. Waves around 24 ft.

Monday Night

SSW wind 33 to 43 kt, with gusts as high as 60 kt. Scattered showers and thunderstorms. Waves around 22 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.