Waimea, Big Island weather in August 2025

Expect 26°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Waimea, Big Island in August. Check more long-term weather averages for Waimea, Big Island in August before you book your next holiday to Hawaii in 2025/2026.

26
26°C max day temperature
7
7 hours of sunshine per day
20
20 days with some rainfall
17
17°C min night temperature
13
13 hours of daylight per day
L
Low heat & humidity
41
41 mm of monthly rainfall
11
11+ (Extreme) UV index

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Waimea, Big Island by month

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The August weather guide for Hawaii (Waimea, Big Island) 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, Big Island in August?

Daytime temperatures usually reach 26°C in Waimea, Big Island in August with low heat and humidity, falling to 17°C at night.

How sunny is it in Waimea, Big Island in August?

There are normally 7 hours of bright sunshine each day in Waimea, Big Island in August - that's 52% of daylight hours.

Does it rain in Waimea, Big Island in August?

There are usually 20 days with some rain in Waimea, Big Island in August and the average monthly rainfall is 41mm.

What is the chance of a hurricane in Waimea, Big Island in August?

On average less than 1 day in August in Waimea, Big Island is likely to be affected by the passage of one or more tropical storms.

Waimea, Big Island August sunrise & sunset times

Browse the sunrise and sunset times for Waimea, Big Island in August 2025. Select a month to view Waimea, Big Island 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	05:58	18:59
Saturday, 16th August 2025	06:03	18:50
Sunday, 31st August 2025	06:07	18:38

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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