Penrhyn weather in August 2025

Expect 86°F daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in Penrhyn in August. Check more long-term weather averages for Penrhyn in August before you book your next holiday to Cook Islands in 2025/2026.

86
86°F max day temperature
5
5 days with some rainfall
75
75°F min night temperature
12
12 hours of daylight per day
H
High heat & humidity
6.3
6.3 inches of monthly rainfall
11
11 (Extreme) UV index
82
82°F sea temperature

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The August weather guide for Cook Islands (Penrhyn) 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) | Imperial (°F)

How hot is it in Penrhyn in August?

Daytime temperatures usually reach 86°F in Penrhyn in August with high heat and humidity, falling to 75°F at night.

How warm is the sea around Penrhyn in August?

The average sea temperature around Penrhyn in August is 82°F.

Does it rain in Penrhyn in August?

There are usually 5 days with some rain in Penrhyn in August and the average monthly rainfall is 6.3 inches.

Penrhyn August sunrise & sunset times

Browse the sunrise and sunset times for Penrhyn in August 2025. Select a month to view Penrhyn 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	06:47	18:30
Saturday, 16th August 2025	06:42	18:31
Sunday, 31st August 2025	06:34	18:30

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Cook Islands - quick facts
Time difference	UK -10 hours
Language(s)	English, Maori
Currency	Cook Islands Dollar, New Zealand Dollar
Electricity	I plug (240V)
Driving side	Left
Why visit?	Beaches
Tourist info	Cook Islands Tourism