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
30°C max day temperature
9
9 hours of sunshine per day
9
9 days with some rainfall
22
22°C min night temperature
13
13 hours of daylight per day
H
High heat & humidity
79
79 mm of monthly rainfall
11
11+ (Extreme) UV index
26
26°C sea temperature

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Waimea Bay, Oahu by month

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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)

More about the USA

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.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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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Hawaii - quick facts
Flight time^✝	18 hours
Time difference	UK -10 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Beaches Nature Nightlife
Tourist info	Hawaii Tourism Authority