Kwajalein Atoll Forecast
Wednesday, August 20, 2025
KWAJALEIN FORECAST DISCUSSION
Showers are quickly developing across Kwajalein Atoll overnight as a weak trade-wind trough moves through the region. Gentle to moderate northeasterly winds will persist overnight, shifting to east–southeast by. Widely scattered to scattered showers are expected through the night, decreasing toward sunrise. Stray thunderstorms remain possible due to cool mid-level temperatures. By late morning, shower activity should diminish, with drier conditions returning through the afternoon as the trough exits. Tomorrow, a weakening subtropical ridge will relax the pressure gradient, dropping winds into the single digits for the next couple of days. During this time, the ITCZ may drift closer to the atoll, allowing shallow atmospheric waves to enhance shower chances toward the end of the workweek. Intermittent showers are expected to continue into the weekend as the ITCZ reorganizes and sends additional atmospheric waves across the region. Shower chances will be 20-40% overnight into tomorrow morning, and decreasing to <10% by tomorrow afternoon. Combined seas on the open ocean will be 2-4 feet. MDM
TROPICAL CYCLONE ACTIVITY IN THE USAG-KA WATCH AREA
None.
WARNINGS AND ADVISORIES
None.
TONIGHT
Wednesday, August 20, 2025
Weather Forecast
Mostly cloudy tonight with widely scattered to scattered showers and stray thunderstorms.
79°F
Winds
ENE-ESE at 10-15 knots with higher gusts possible near showers.
Sea Conditions Forecast
Open Ocean
2-4 ft
Lagoon
1-2 ft
TOMORROW
Thursday, August 21, 2025
Weather Forecast
Partly sunny tomorrow with isolated showers early becoming stray showers by noon.
86°F
Winds
ENE-ESE at 10-15 knots with higher gusts possible near showers.
Sea Conditions Forecast
Open Ocean
2-4 ft
Lagoon
1-2 ft
TIDES
High of 4.0 ft at 3:07 AM
Low of -0.2 ft at 9:40 AM
High of 3.1 ft at 3:39 PM
Low of 0.0 ft at 9:25 PM
ALMANAC
Temperatures
Yesterday’s high: 88°F
Normal high: 86°F
Yesterday’s low: 80°F
Normal low: 78°F
Rainfall
Yesterday: 0.00”
August total: 2.66”
August deviation: -3.71”
Yearly total: 34.13”
Yearly deviation: -13.64”
Sun
Sunrise: 6:41 AM
Sunset: 7:03 PM
Moon
Moonrise: 4:32 AM
Moonset: 5:31 PM