Last Update: 451 PM ChST Sun Aug 23 2026

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Tiyan, GU Local Forecast Office

9NM SSE Rota GU

Marine Zone Forecast

...SMALL CRAFT ADVISORY REMAINS IN EFFECT THROUGH MONDAY AFTERNOON...

Tonight
Southwest wind 10 to 15 kt with gusts to 25 kt near heavier showers. Seas 7 to 9 ft. Wave detail: southwest 7 ft at 9 seconds, north 4 ft at 10 seconds, southwest 4 ft at 4 seconds and southeast 3 ft at 8 seconds. Numerous heavy showers with isolated thunderstorms.
Monday
Southwest wind 10 to 15 kt with gusts to 25 kt near heavier showers. Seas 8 to 10 ft. Wave detail: southwest 8 ft at 10 seconds, southwest 4 ft at 4 seconds, southeast 3 ft at 8 seconds and north 4 ft at 10 seconds. Numerous heavy showers with isolated thunderstorms.
Monday Night
Southwest wind 10 to 15 kt with gusts to 25 kt near heavier showers. Seas 8 to 10 ft. Wave detail: southwest 8 ft at 10 seconds, north 4 ft at 10 seconds, southwest 4 ft at 4 seconds and east 2 ft at 12 seconds. Scattered heavy showers with isolated thunderstorms.
Tuesday
Southwest wind 5 to 10 kt. Seas 7 to 9 ft. Wave detail: southwest 7 ft at 10 seconds, northwest 3 ft at 10 seconds, east 3 ft at 12 seconds and southwest 2 ft at 4 seconds. scattered heavy showers with isolated thunderstorms.
Tuesday Night
Southwest wind 5 to 10 kt. Seas 5 to 7 ft. Wave detail: southwest 6 ft at 9 seconds, east 3 ft at 12 seconds, southwest 2 ft at 4 seconds and northwest 2 ft at 10 seconds. scattered 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, east 3 ft at 12 seconds, southwest 2 ft at 4 seconds and northwest 2 ft at 10 seconds. A chance of showers with a slight chance of thunderstorms.
Thursday And Friday
West wind 5 to 15 kt. Seas 4 to 6 ft. Wave detail: west 4 ft at 10 seconds, west 3 ft at 4 seconds and northeast 3 ft at 12 seconds. Showers likely with a slight chance of thunderstorms.



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451 PM ChST Sun Aug 23 2026
 
 

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