Kailua, Oahu weather in January 2025

Expect 79°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Kailua, Oahu in January. Check more long-term weather averages for Kailua, Oahu in January before you book your next holiday to Hawaii in 2025/2026.

  • 79°F maximum daytime temperature in January in Kailua, Oahu79
    79°F max day temperature
  • 7 hours of sunshine per day
  • 10 days with some rainfall in January in Kailua, Oahu10
    10 days with some rainfall
  • 64°F minimum night-time temperature in January in Kailua, Oahu64
    64°F 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
  • 3.5 inches monthly rainfall in January in Kailua, Oahu3.5
    3.5 inches of monthly rainfall
  • UV (maximum) index 7 (High) in January in Kailua, Oahu7
    7 (High) UV index
  • 75°F sea temperature in January in Kailua, Oahu75
    75°F 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)  |  Imperial (°F)

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How hot is it in Kailua, Oahu in January?

Daytime temperatures usually reach 79°F in Kailua, Oahu in January with low heat and humidity, falling to 64°F 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 75°F.

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 3.5 inches.

Kailua, Oahu January sunrise & sunset times

Browse the sunrise and sunset times for Kailua, Oahu in January 2025. Select a month to view Kailua, Oahu sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st January 2025 07:09 18:01
Thursday, 16th January 2025 07:11 18:11
Friday, 31st January 2025 07:08 18:21

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