689
FZMY50 PGUM 070720
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
520 PM ChST Sun Dec 7 2025

Marianas Waters out to 40 nautical miles

PMZ150-072000-
520 PM ChST Sun Dec 7 2025

.Synopsis for Marianas Waters...
Gentle to moderate trades will prevail the next few days. Combined
seas of 5 to 8 feet are expected to persist, as the seasonal
trade swell and secondary northeasterly swells linger. Winds are
expected to become moderate to fresh late this week as shearline
fragments shift southward into the Marianas.

$$

PMZ151>154-072000-
MARIANAS COASTAL WATERS-
520 PM ChST Sun Dec 7 2025

.TONIGHT...Northeast wind 10 to 15 kt. Seas 5 to 8 ft. Wave Detail:
East 5 ft at 9 seconds, north 4 ft at 10 seconds, northeast 3 ft
at 12 seconds and northeast 3 ft at 4 seconds. Scattered showers
near midnight.
.MONDAY...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail:
East 5 ft at 9 seconds, north 3 ft at 10 seconds, northeast 3 ft
at 4 seconds and northeast 2 ft at 12 seconds.
.MONDAY NIGHT...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail:
East 5 ft at 9 seconds, north 3 ft at 10 seconds, northeast 3 ft
at 4 seconds and northeast 2 ft at 12 seconds.
.TUESDAY...East wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail:
East 6 ft at 9 seconds, north 3 ft at 10 seconds and east 3 ft at
4 seconds.
.TUESDAY NIGHT...East wind 10 to 15 kt. Seas 6 to 8 ft. Wave
Detail: East 6 ft at 9 seconds, east 3 ft at 4 seconds and north
3 ft at 10 seconds.
.WEDNESDAY...East wind 15 kt. Seas 5 to 7 ft. Wave Detail: East 5
ft at 9 seconds, east 3 ft at 5 seconds and north 3 ft at 10
seconds.
.THURSDAY...East wind 15 kt. Seas 5 to 7 ft. Wave Detail: East
5 ft at 10 seconds, east 3 ft at 5 seconds and north 3 ft at
10 seconds.
.FRIDAY...Northeast wind 15 kt. Seas 5 to 7 ft. Wave Detail:
Northeast 6 ft at 10 seconds and northeast 3 ft at 5 seconds.

$$