Penrhyn weather in January 2026

Expect 31°C daytime maximum temperatures in the shade in Penrhyn in January based on long-term weather averages. There is usually 18 days with some rainfall and 248 mm of average monthly rainfall in January.

  • 31°C maximum daytime temperature in January in Penrhyn31
    31°C max day temperature
  • 18 days with some rainfall in January in Penrhyn18
    18 days with some rainfall
  • 25°C minimum night-time temperature in January in Penrhyn25
    25°C min night temperature
  • 13 hours of daylight per day in January in Penrhyn13
    13 hours of daylight per day
  • High heat & humidity in January in PenrhynH
    High heat & humidity
  • 248 mm monthly rainfall in January in Penrhyn248
    248 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in Penrhyn11
    11+ (Extreme) UV index
  • 29°C sea temperature in January in Penrhyn29
    29°C sea temperature

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The January 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Penrhyn in January?

Daytime temperatures usually reach 31°C in Penrhyn in January with high heat and humidity, falling to 25°C at night.

How warm is the sea around Penrhyn in January?

The average sea temperature around Penrhyn in January is 29°C.

Does it rain in Penrhyn in January?

There are usually 18 days with some rain in Penrhyn in January and the average monthly rainfall is 248mm.

Penrhyn January sunrise & sunset times

Browse the sunrise and sunset times for Penrhyn in January 2026. Select a month to view Penrhyn sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 06:17 18:55
Friday, 16th January 2026 06:25 19:00
Saturday, 31st January 2026 06:31 19:00

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