National Weather Service Forecast for: Waipahu HI
Issued by: National Weather Service Honolulu, HI
Updated: 4:01 am HST Apr 6, 2026
 
Today

Today: Isolated showers before noon. Mostly sunny, with a high near 80. East wind 7 to 9 mph. Chance of precipitation is 20%.
Isolated
Showers then
Mostly Sunny
 Tonight

Tonight: Isolated showers after midnight. Partly cloudy, with a low around 68. Southeast wind around 6 mph. Chance of precipitation is 20%.
Mostly Clear
then Isolated
Showers
 Tuesday

Tuesday: Scattered showers. Partly sunny, with a high near 81. Southeast wind around 5 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Scattered
Showers
 Tuesday
Night
Tuesday Night: Isolated showers. Partly cloudy, with a low around 69. Calm wind becoming east southeast around 6 mph after midnight. Chance of precipitation is 20%.
Isolated
Showers
 Wednesday

Wednesday: Scattered showers. Partly sunny, with a high near 81. Southeast wind around 7 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Scattered
Showers
 Wednesday
Night
Wednesday Night: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 71. South southeast wind 8 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Heavy Rain

 Thursday

Thursday: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 78. South southeast wind around 11 mph. Chance of precipitation is 80%.
Heavy Rain

 Thursday
Night
Thursday Night: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 70. South southeast wind around 9 mph. Chance of precipitation is 80%.
Heavy Rain

 Friday

Friday: Showers likely and possibly a thunderstorm before noon, then scattered showers and thunderstorms after noon. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 79. South wind around 13 mph. Chance of precipitation is 70%.
Heavy Rain
Hi 80 °F Lo 68 °F Hi 81 °F Lo 69 °F Hi 81 °F Lo 71 °F Hi 78 °F Lo 70 °F Hi 79 °F

Hydrologic Outlook
 

Today
 
 Isolated showers before noon. Mostly sunny, with a high near 80. East wind 7 to 9 mph. Chance of precipitation is 20%.
Tonight
 
 Isolated showers after midnight. Partly cloudy, with a low around 68. Southeast wind around 6 mph. Chance of precipitation is 20%.
Tuesday
 
 Scattered showers. Partly sunny, with a high near 81. Southeast wind around 5 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
 Isolated showers. Partly cloudy, with a low around 69. Calm wind becoming east southeast around 6 mph after midnight. Chance of precipitation is 20%.
Wednesday
 
 Scattered showers. Partly sunny, with a high near 81. Southeast wind around 7 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
 
 Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 71. South southeast wind 8 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Thursday
 
 Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 78. South southeast wind around 11 mph. Chance of precipitation is 80%.
Thursday Night
 
 Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 70. South southeast wind around 9 mph. Chance of precipitation is 80%.
Friday
 
 Showers likely and possibly a thunderstorm before noon, then scattered showers and thunderstorms after noon. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 79. South wind around 13 mph. Chance of precipitation is 70%.
Friday Night
 
 Scattered showers. Partly cloudy, with a low around 69. South southwest wind around 13 mph. Chance of precipitation is 30%.
Saturday
 
 Scattered showers. Partly sunny, with a high near 79. Southwest wind around 11 mph. Chance of precipitation is 30%.
Saturday Night
 
 Scattered showers. Mostly cloudy, with a low around 69. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Sunday
 
 Scattered showers. Partly sunny, with a high near 78. Light and variable wind. Chance of precipitation is 50%.

 

Forecast from NOAA-NWS for Waipahu HI.