Penrhyn Weather in August
During August, Penrhyn experiences high daytime temperatures of 29°C (84°F) and cooler nights around 26°C (79°F). Expect quite a bit of rainfall. Around 100 mm (3.9 in) is typical.
Rainfall in Penrhyn in August
Typically, about 15 days will experience rainfall, with an average of 100 mm (3.9 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Penrhyn in August
Daytime temperatures in Penrhyn reach 29°C (84°F) in August, dropping to 26°C (79°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 26°C (79°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help.
Sunshine in Penrhyn in August
With approximately 204 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.If you prefer dry days with pleasant temperatures, September typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the Cook Islands, check out our Penrhyn's climate page.
Penrhyn Temperature in August
Min Temperature
26°C (79°F)
Max Temperature
29°C (84°F)
Chance of Rain
51%
Precipitation
100 mm (3.9 in)
Rainy days
15 days
Humidity
82%
Sunshine
204 hours
Percentage Sunshine
Daily Historical Temperatures
44-year average (1976-2025)
Based on our historical records, temperatures in Penrhyn typically stay consistent throughout August, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 27°C (81°F).
Average temperatures in August
Historical weather for Penrhyn in August
Browse day-by-day weather records for Penrhyn spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Penrhyn historical weather extremes in August
The extremes listed below come from historical weather data collected in Penrhyn from 2006 through 2025.
- Penrhyn recorded its highest August temperature of 37°C (99°F) on August 19, 2015.
- Penrhyn experienced its chilliest August day on August 18, 2012, reaching only 26°C (79°F).
- The lowest overnight temperature recorded in August was 20°C (68°F) (August 25, 2023).
Best Places in the Cook Islands in August
Find out more about the weather in the Cook Islands and which places have the best travel conditions in this month. See all of the Cook Islands in August →
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What to Wear in Penrhyn in August
Warm temperatures in August make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Penrhyn in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the Cook Islands, check out our Penrhyn's climate page.
Temperature Rainfall Sunshine Humidity
See the full Penrhyn climate overview or explore weather in the Cook Islands.
