See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
27°
Breezy and Mostly Clear
Feels Like: 28°
Min: 25°
Max: 27°
The next few hours will be mostly clear, with today reaching 27°C and dropping to 26°C. The coming days will be drizzle and windy throughout the day.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:22
Sunrise
18:29
Sunset
Moon
Waxing Crescent
10:33
Moonrise
20:54
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 Diamond Head / Kapahulu / Saint Louis Heights today, September 15, 2026
Diamond Head / Kapahulu / Saint Louis Heights looks damp on September 15, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly.
The temperature range runs from about 25°C up to 27°C. Relative humidity sits between 82% and 85%, reaching its peak around 23:00. A lighter breeze peaks around 20:00 near 7.3 km/h.
Expect the wet theme to continue later, as rain odds reach 26% near 21:00. Cloud amounts hold near 15% around 19:00. Views remain open at about 16.1 km. Sunrise is at 06:22 and sunset at 18:29, giving 12 hours 6 minutes of sunlight today.
Taken together, Diamond Head / Kapahulu / Saint Louis Heights looks wet enough on September 15, 2026 that flexible outdoor plans work best, with temperatures peaking near 27°C.
Frequently asked questions about weather in Diamond Head / Kapahulu / Saint Louis Heights
How warm does it get in Diamond Head / Kapahulu / Saint Louis Heights?
The warmest month in Diamond Head / Kapahulu / Saint Louis Heights is September, with average high temperatures of 27°C. The average temperature during this period is around 26°C.
How cold does it get in Diamond Head / Kapahulu / Saint Louis Heights?
The coldest month in Diamond Head / Kapahulu / Saint Louis Heights is February, with average low temperatures of 22°C. The average temperature during this period is around 23°C.
What is the wettest time of year in Diamond Head / Kapahulu / Saint Louis Heights?
The wettest month in Diamond Head / Kapahulu / Saint Louis Heights is December, with an average of 51mm of precipitation.
What is the driest time of year in Diamond Head / Kapahulu / Saint Louis Heights?
The driest month in Diamond Head / Kapahulu / Saint Louis Heights is July, with an average of 11mm of precipitation.
View full climate insights for Diamond Head / Kapahulu / Saint Louis Heights →
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