Waimea Bay, Oahu weather in August 2025

Expect 30°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Waimea Bay, Oahu in August. Check more long-term weather averages for Waimea Bay, Oahu in August before you book your next holiday to Hawaii in 2025/2026.

  • 30°C maximum daytime temperature in August in Waimea Bay, Oahu30
    30°C max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in August in Waimea Bay, Oahu9
    9 days with some rainfall
  • 22°C minimum night-time temperature in August in Waimea Bay, Oahu22
    22°C min night temperature
  • 13 hours of daylight per day in August in Waimea Bay, Oahu13
    13 hours of daylight per day
  • High heat & humidity in August in Waimea Bay, OahuH
    High heat & humidity
  • 79 mm monthly rainfall in August in Waimea Bay, Oahu79
    79 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Waimea Bay, Oahu11
    11+ (Extreme) UV index
  • 26°C sea temperature in August in Waimea Bay, Oahu26
    26°C sea temperature

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The August weather guide for Hawaii (Waimea Bay, Oahu) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Waimea Bay, Oahu in August?

Daytime temperatures usually reach 30°C in Waimea Bay, Oahu in August with high heat and humidity, falling to 22°C at night.

How sunny is it in Waimea Bay, Oahu in August?

There are normally 9 hours of bright sunshine each day in Waimea Bay, Oahu in August - that's 72% of daylight hours.

How warm is the sea around Waimea Bay, Oahu in August?

The average sea temperature around Waimea Bay, Oahu in August is 26°C.

Does it rain in Waimea Bay, Oahu in August?

There are usually 9 days with some rain in Waimea Bay, Oahu in August and the average monthly rainfall is 79mm.

Waimea Bay, Oahu August sunrise & sunset times

Browse the sunrise and sunset times for Waimea Bay, Oahu in August 2025. Select a month to view Waimea Bay, Oahu sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 06:05 19:11
Saturday, 16th August 2025 06:11 19:02
Sunday, 31st August 2025 06:15 18:49

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