Last Update: 511 PM ChST Wed Jun 17 2026

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Tiyan, GU Local Forecast Office

9NM SSE Rota GU

Marine Zone Forecast


Tonight
East wind 10 to 15 kt. Seas 3 to 5 ft. Wave detail: east 3 ft at 4 seconds, east 3 ft at 8 seconds, and southeast 2 ft at 10 seconds. Scattered showers with isolated thunderstorms.
Thursday
Northeast wind 10 to 15 kt. Seas 4 to 5 ft. Wave detail: east 4 ft at 8 seconds, northeast 3 ft at 4 seconds and southeast 2 ft at 10 seconds. Scattered showers with isolated thunderstorms.
Thursday Night
Variable winds 5 kt for guam coastal waters. east wind 10 to 15 kt for rota, tinain, and saipan coastal waters. Gusts possible up to 25 kt. Seas 5 to 6 ft. Wave detail: east 4 ft at 8 seconds, east 3 to 4 ft at 4 seconds and southeast 2 ft at 10 seconds. Numerous locally heavy showers with isolated thunderstorms.
Friday
Southeast wind 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave detail: east 3 to 4 ft at 8 seconds, southeast 3 to 4 ft at 4 seconds and southeast 2 ft at 10 seconds. Numerous locally heavy showers with isolated thunderstorms.
Friday Night
Southeast wind 10 to 15 kt. Seas 4 to 5 ft. Wave detail: east 3 to 4 ft at 8 seconds, southeast 3 ft at 4 seconds and southeast 2 ft at 10 seconds. Scattered showers with isolated thunderstorms.
Saturday
Southeast wind 10 to 15 kt. Seas 3 to 4 ft. Wave detail: east 3 ft at 8 seconds, southeast 2 ft at 4 seconds and southeast 2 ft at 10 seconds. Scattered showers with a slight chance of thunderstorms.
Sunday And Monday
South wind 5 to 10 kt. Seas around 3 ft. wave detail: east 2 ft at 8 seconds and south 2 ft at 4 seconds.



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511 PM ChST Wed Jun 17 2026
 
 

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