National Weather Service Forecast for: Wailuku HI
Issued by: National Weather Service Honolulu, HI
Updated: 6:01 pm HST Aug 19, 2026
 
Tonight

Tonight: Isolated showers before midnight. Partly cloudy, with a low around 75. North northwest wind 3 to 5 mph. Chance of precipitation is 20%.
Isolated
Showers

 Thursday

Thursday: Scattered showers, mainly after noon. Mostly sunny, with a high near 82. North northeast wind 5 to 9 mph becoming light north in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Scattered
Showers

 Thursday
Night
Thursday Night: Scattered showers. Mostly cloudy, with a low around 76. Light and variable wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Scattered
Showers

 Friday

Friday: Showers likely, mainly before noon. Partly sunny, with a high near 83. Light east wind increasing to 5 to 9 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Showers
Likely

 Friday
Night
Friday Night: Scattered showers. Partly cloudy, with a low around 76. East wind 9 to 13 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Scattered
Showers

 Saturday

Saturday: Scattered showers, mainly after noon. Partly sunny, with a high near 83. East northeast wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Isolated
Showers then
Scattered
Showers
 Saturday
Night
Saturday Night: Scattered showers. The rain could be heavy at times. Partly cloudy, with a low around 76. Breezy, with an east wind 14 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Heavy Rain
and Breezy

 Sunday

Sunday: Scattered showers. The rain could be heavy at times. Partly sunny, with a high near 82. Breezy, with an east northeast wind 16 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Heavy Rain
and Breezy

 Sunday
Night
Sunday Night: Showers likely, mainly after midnight. The rain could be heavy at times. Mostly cloudy, with a low around 76. Breezy, with an east wind 13 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Heavy Rain
and Breezy
Lo 75 °F Hi 82 °F Lo 76 °F Hi 83 °F Lo 76 °F Hi 83 °F Lo 76 °F Hi 82 °F Lo 76 °F

 

Tonight
 
 Isolated showers before midnight. Partly cloudy, with a low around 75. North northwest wind 3 to 5 mph. Chance of precipitation is 20%.
Thursday
 
 Scattered showers, mainly after noon. Mostly sunny, with a high near 82. North northeast wind 5 to 9 mph becoming light north in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
 
 Scattered showers. Mostly cloudy, with a low around 76. Light and variable wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
 
 Showers likely, mainly before noon. Partly sunny, with a high near 83. Light east wind increasing to 5 to 9 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
 
 Scattered showers. Partly cloudy, with a low around 76. East wind 9 to 13 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
 
 Scattered showers, mainly after noon. Partly sunny, with a high near 83. East northeast wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
 
 Scattered showers. The rain could be heavy at times. Partly cloudy, with a low around 76. Breezy, with an east wind 14 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Sunday
 
 Scattered showers. The rain could be heavy at times. Partly sunny, with a high near 82. Breezy, with an east northeast wind 16 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Sunday Night
 
 Showers likely, mainly after midnight. The rain could be heavy at times. Mostly cloudy, with a low around 76. Breezy, with an east wind 13 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Monday
 
 Scattered showers. The rain could be heavy at times. Mostly cloudy, with a high near 82. East wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.
Monday Night
 
 Showers likely. Mostly cloudy, with a low around 76. East wind 11 to 13 mph. Chance of precipitation is 60%.
Tuesday
 
 Scattered showers. Mostly cloudy, with a high near 81. East wind 11 to 13 mph. Chance of precipitation is 50%.
Tuesday Night
 
 Scattered showers. Mostly cloudy, with a low around 75. East wind around 11 mph. Chance of precipitation is 40%.
Wednesday
 
 Scattered showers. Partly sunny, with a high near 81. East wind 10 to 13 mph. Chance of precipitation is 40%.

 

Forecast from NOAA-NWS for Wailuku HI.