Last Update: 443 AM ChST Sun Aug 23 2026

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Tiyan, GU Local Forecast Office

9NM SSE Rota GU

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

Today
Southwest wind 10 to 20 kt with gusts to 30 kt. Seas 9 to 10 ft. Wave detail: north 7 ft at 9 seconds, southwest 6 ft at 9 seconds, southwest 3 ft at 5 seconds and southeast 3 ft at 8 seconds. Scattered showers and isolated thunderstorms.
Tonight
Southwest wind 10 to 15 kt with gusts to 25 kt. Seas 7 to 9 ft. Wave detail: north 5 ft at 10 seconds, southwest 4 ft at 9 seconds, southwest 3 ft at 4 seconds and southeast 3 ft at 8 seconds. Scattered locally heavy showers with isolated thunderstorms.
Monday
Southwest wind 10 to 15 kt with gusts to 25 kt. Seas 7 to 9 ft. Wave detail: southwest 6 ft at 9 seconds, north 4 ft at 10 seconds, southwest 3 ft at 4 seconds and southeast 3 ft at 8 seconds. Scattered locally heavy showers with isolated thunderstorms.
Monday Night
Southwest wind 10 to 15 kt. Seas 7 to 9 ft. Wave detail: southwest 7 ft at 9 seconds, north 4 ft at 10 seconds, southwest 2 ft at 4 seconds and east 2 ft at 11 seconds. Scattered locally heavy showers with isolated thunderstorms.
Tuesday
Southwest wind 5 to 15 kt. Seas 6 to 8 ft. Wave detail: southwest 6 ft at 9 seconds, northwest 3 ft at 10 seconds, southwest 2 ft at 4 seconds and east 2 ft at 11 seconds. Scattered locally heavy showers with isolated thunderstorms.
Wednesday
Southwest wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: southwest 5 ft at 10 seconds, southwest 2 ft at 4 seconds, northwest 2 ft at 10 seconds and east 2 ft at 11 seconds. A chance of showers with a slight chance of thunderstorms.
Thursday
Southwest wind 10 to 20 kt. Seas 5 to 7 ft. Wave detail: west 5 ft at 9 seconds, southwest 3 ft at 5 seconds and east 2 ft at 12 seconds. A chance of showers with a slight chance of thunderstorms.



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443 AM ChST Sun Aug 23 2026
 
 

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