Kailua, Oahu weather in January 2026

Expect 26°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Kailua, Oahu in January based on long-term weather averages. There is usually 10 days with some rainfall and 89 mm of average monthly rainfall in January.

  • 26°C maximum daytime temperature in January in Kailua, Oahu26
    26°C max day temperature
  • 7 hours of sunshine per day
  • 10 days with some rainfall in January in Kailua, Oahu10
    10 days with some rainfall
  • 18°C minimum night-time temperature in January in Kailua, Oahu18
    18°C min night temperature
  • 11 hours of daylight per day in January in Kailua, Oahu11
    11 hours of daylight per day
  • Low heat & humidity in January in Kailua, OahuL
    Low heat & humidity
  • 89 mm monthly rainfall in January in Kailua, Oahu89
    89 mm of monthly rainfall
  • UV (maximum) index 7 (High) in January in Kailua, Oahu7
    7 (High) UV index
  • 24°C sea temperature in January in Kailua, Oahu24
    24°C sea temperature

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Kailua, Oahu by month

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The January weather guide for Hawaii (Kailua, Oahu) 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 Kailua, Oahu in January?

Daytime temperatures usually reach 26°C in Kailua, Oahu in January with low heat and humidity, falling to 18°C at night.

How sunny is it in Kailua, Oahu in January?

There are normally 7 hours of bright sunshine each day in Kailua, Oahu in January - that's 63% of daylight hours.

How warm is the sea around Kailua, Oahu in January?

The average sea temperature around Kailua, Oahu in January is 24°C.

Does it rain in Kailua, Oahu in January?

There are usually 10 days with some rain in Kailua, Oahu in January and the average monthly rainfall is 89mm.

Kailua, Oahu January sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 07:09 18:01
Friday, 16th January 2026 07:11 18:11
Saturday, 31st January 2026 07:09 18:21

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