407
FZPQ52 PGUM 180720
CWFPQ2

Coastal Waters/Island Forecast for Western Micronesia
National Weather Service Tiyan GU
520 PM ChST Tue Aug 18 2026

Coastal waters extend out to 40 nautical miles

PMZ161-182300-
Palau Coastal Waters-
520 PM ChST Tue Aug 18 2026

.TONIGHT...Southwest wind 10 to 15 kt. Wind waves 2 to 3 ft.
Southwest swell 4 to 5 ft. Partly cloudy. Isolated light showers.
Lows around 78. Chance of showers 10 percent.
.WEDNESDAY...West wind 5 to 10 kt. Wind waves 2 ft or less.
Southwest swell 3 to 4 ft. Mostly sunny. Isolated showers. Highs
near 87. Chance of showers 20 percent.
.WEDNESDAY NIGHT...West wind 5 to 10 kt. Wind waves 2 ft or less.
Southwest swell 3 to 4 ft. Mostly cloudy. Isolated showers and
thunderstorms. Lows around 78. Chance of showers 20 percent.
.THURSDAY...West wind 5 to 10 kt. Wind waves 2 ft or less. Southwest
swell 3 to 4 ft. Partly sunny. Scattered showers and isolated
thunderstorms. Highs near 87. Chance of showers 30 percent.
.THURSDAY NIGHT...West wind 10 to 15 kt. Wind waves 2 to 3 ft.
Southwest swell 3 to 4 ft. Cloudy. Numerous showers and isolated
thunderstorms. Lows around 78. Chance of showers 70 percent.
.FRIDAY AND SATURDAY...West wind 10 to 20 kt with gusts to 25 kt.
Wind waves 3 to 5 ft. Southwest swell 3 to 4 ft. Widespread locally
heavy showers and slight chance of thunderstorms. Highs in the mid
80s. Lows in the upper 70s. Chance of showers 80 percent.
.SUNDAY...West wind 10 to 20 kt. Wind waves 2 to 4 ft. Southwest
swell 5 to 6 ft. Mostly cloudy with a 50 percent chance of showers
and slight chance of thunderstorms. Highs in the mid 80s. Lows in the
upper 70s.

$$

PMZ171-182300-
Yap Coastal Waters-
520 PM ChST Tue Aug 18 2026

.TONIGHT...West wind 5 to 10 kt. Wind waves 2 ft or less. West swell
4 to 5 ft and northwest 3 ft. Partly cloudy. Isolated showers and
thunderstorms. Lows around 78. Chance of showers 20 percent.
.WEDNESDAY...Northwest wind 5 to 10 kt. Wind waves 2 ft or less.
West swell 4 to 5 ft and northwest 3 ft. Cloudy. Scattered showers
in the morning becoming numerous in the afternoon. Isolated
thunderstorms. Highs near 86. Chance of showers 70 percent.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 kt. Wind waves 2 ft or
less. West swell 4 to 5 ft and northwest 3 ft. Cloudy. Numerous
showers and isolated thunderstorms. Lows around 78. Chance of showers
70 percent.
.THURSDAY...Northwest wind 5 to 15 kt. Wind waves 1 to 3 ft. West
swell 3 to 5 ft and northwest 3 ft. Widespread locally heavy showers
and isolated thunderstorms. Highs near 86. Chance of showers 80
percent.
.THURSDAY NIGHT...Northwest wind 5 to 15 kt. Wind waves 1 to 3 ft.
West swell 3 to 4 ft and northwest 3 ft. Widespread locally heavy
showers and isolated thunderstorms. Lows around 78. Chance of
showers 80 percent.
.FRIDAY...Northwest wind 10 kt. Wind waves 2 ft or less. Northwest
swell 4 to 6 ft. Widespread locally heavy showers and slight chance
of thunderstorms. Highs in the mid 80s. Lows in the upper 70s. Chance
of showers 80 percent.
.SATURDAY...West wind 5 to 15 kt. Wind waves 1 to 3 ft. West swell 5
to 7 ft. Mostly cloudy with a 50 percent chance of showers and
slight chance of thunderstorms. Highs in the mid 80s. Lows in the
upper 70s.
.SUNDAY...West wind 10 to 20 kt. Wind waves 2 to 4 ft. Southwest
swell 6 to 8 ft. Mostly cloudy with a 50 percent chance of showers
and slight chance of thunderstorms. Highs in the mid 80s. Lows in the
upper 70s.

$$

PMZ172-182300-
Chuuk Coastal Waters-
520 PM ChST Tue Aug 18 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...
...A TROPICAL DISTURBANCE 92W BRINGS HEAVIER SHOWERS AND GUSTY WINDS
THROUGH THE REST OF THE WEEK...

.TONIGHT...Northwest wind 10 to 20 kt with frequent gusts to 30 kt.
Wind waves 3 to 5 ft. Southwest swell 4 to 5 ft and south 3 ft.
Widespread locally heavy showers and isolated thunderstorms. Lows
around 75. Chance of showers near 100 percent.
.WEDNESDAY...West wind 10 to 20 kt with frequent gusts to 30 kt.
Wind waves 3 to 5 ft. Southwest swell 4 to 5 ft and south 3 ft.
Widespread locally heavy showers and isolated thunderstorms. Highs
near 85. Chance of showers near 100 percent.
.WEDNESDAY NIGHT...West wind 15 to 20 kt with occasional gusts to 35
kt. Wind waves 4 to 6 ft. Southwest swell 4 to 5 ft and south 3 ft.
Widespread locally heavy showers and isolated thunderstorms. Lows
around 75. Chance of showers near 100 percent.
.THURSDAY...Southwest wind 15 to 25 kt with occasional gusts to 35
kt. Wind waves 5 to 7 ft. Southwest swell 5 to 6 ft. Widespread
locally heavy showers and isolated thunderstorms. Highs near 85.
Chance of showers 90 percent.
.THURSDAY NIGHT...Southwest wind 15 to 25 kt with occasional gusts
to 35 kt. Wind waves 5 to 7 ft. Southwest swell 5 to 7 ft. Cloudy.
Numerous showers and isolated thunderstorms. Lows around 78. Chance
of showers 70 percent.
.FRIDAY...Southwest wind 10 to 20 kt with frequent gusts to 30 kt.
Wind waves 4 to 6 ft. Southwest swell 5 to 7 ft. Mostly cloudy with
a 50 percent chance of showers and slight chance of thunderstorms.
Highs in the mid 80s. Lows in the upper 70s.
.SATURDAY...Southwest wind 10 to 20 kt. Wind waves 2 to 4 ft. South
swell 4 to 6 ft. Mostly cloudy. 20 percent chance of showers and
slight chance of thunderstorms. Highs in the upper 80s. Lows in the
upper 70s.
.SUNDAY...Southwest wind 10 to 15 kt. Wind waves 2 to 3 ft.
Southwest swell 4 to 5 ft. Mostly cloudy with a 30 percent chance of
showers and slight chance of thunderstorms. Highs in the upper 80s.
Lows in the upper 70s.

$$