See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
28°
Drizzle
Feels Like: 31°
Min: 22°
Max: 29°
The next few hours will be mostly clear, with today reaching 29°C and dropping to 22°C. The coming days will be light rain throughout the day.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:23
Sunrise
18:30
Sunset
Moon
Waxing Crescent
10:34
Moonrise
20:55
Moonset
Daily Forecast
Tuesday
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Air Quality Data Available
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UV Index
Humidity
Weather in Waipahu today, September 15, 2026
Expect unsettled, showery conditions in Waipahu on September 15, 2026 as rain moves through. The day opens on a wet note and needs flexible outdoor plans.
Temperatures climb from an overnight low near 22°C toward a daytime high of about 29°C. The air stays humid, with relative humidity between 74% and 100% and the peak around 23:00. Airflow remains manageable, reaching about 2.9 km/h around 15:00.
Afternoon showers stay in play, peaking near 98% around 15:00. Skies remain cluttered, with cover about 30% by 15:00. Horizontal visibility holds close to 16.1 km. The sun rises at 06:23 and sets at 18:30, for a total of 12 hours 6 minutes of sunlight today.
Taken together, Waipahu looks wet enough on September 15, 2026 that flexible outdoor plans work best, with temperatures peaking near 29°C.
Frequently asked questions about weather in Waipahu
How warm does it get in Waipahu?
The warmest month in Waipahu is September, with average high temperatures of 29°C. The average temperature during this period is around 26°C.
How cold does it get in Waipahu?
The coldest month in Waipahu is February, with average low temperatures of 20°C. The average temperature during this period is around 22°C.
What is the wettest time of year in Waipahu?
The wettest month in Waipahu is December, with an average of 63mm of precipitation.
What is the driest time of year in Waipahu?
The driest month in Waipahu is September, with an average of 21mm of precipitation.
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