Average temperatures, rainfall, sunshine and the best time to visit Penrhyn.
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10-day forecastForecast
With consistently stable weather, Penrhyn, Cook Islands, sees little seasonal temperature change. Daytime highs average 29°C (84°F), ranging from 30°C (86°F) in April to 29°C (84°F) in August.
With around 1811 mm (71 in) of annual rainfall, Penrhyn has a notably wet climate. However, this rainfall is not evenly distributed, the city has a distinct rainy season from January to April. The wettest month is February. The most sunshine falls in August, with an average of 6.8 hours of daily sunshine.
Pick a month to see the average temperature, rainfall and sunshine in Penrhyn - and find the best time to visit.
The climate in Penrhyn remains fairly constant, offering comfortable temperatures throughout the year. Average daytime temperatures reach a comfortable 30°C (86°F) in April. In August, the coolest month of the year, temperatures drop to a comfortable 29°C (84°F).
At night, temperatures range from around 27°C (81°F) in April to 26°C (79°F) in August.
Check out our detailed temperature page for more information.
Penrhyn is known for its substantial rainfall, with annual precipitation reaching 1811 mm (71 in). Penrhyn can be quite wet during February, receiving approximately 241 mm (9.5 in) of precipitation over 13 rainy days.
In contrast, during the driest month (September), you will experience much drier conditions, with 92 mm (3.6 in) of precipitation spread across 13 rainy days. For more details, please visit our Penrhyn Precipitation page.
Penrhyn experiences moderate variation in sunshine hours across the seasons. With 6.8 hours daily sunshine in August, it dips to 4.7 hours in February, offering a balanced mix of sunny and overcast days.
Visit our detailed sunshine hours page for more information.
The city experiences its highest humidity in March, reaching 84%. In November, the humidity drops to its lowest level at 80%. What does this mean? Read our detailed page on humidity levels for further details.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
September typically offers the most optimal weather in Penrhyn. In contrast, January, February, March, April and May tend to have less optimal conditions. Penrhyn has a distinct rainy season from January to April.
Daytime highs range from 29°C (84°F) in August to 30°C (86°F) in April. Nighttime lows range from 26°C (79°F) to 27°C (81°F). Temperatures stay relatively stable year-round.
Annual rainfall is around 1811 mm (71 in). February is the wettest month with 241 mm (9.5 in), while September is the driest with 92 mm (3.6 in).
Penrhyn receives around 2,113 hours of sunshine per year. August is the sunniest month with 204 hours, while February is the cloudiest with just 142 hours. Overall, Penrhyn enjoys abundant sunshine.
Penrhyn is highlighted - select any city to see its climate.
Where to go in October - average daytime high across popular destinations.
Penrhyn
29°C (84°F) Aitutaki
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