Kailua, Big Island weather in January 2026

Expect 68°F daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in Kailua, Big Island in January. Check more long-term weather averages for Kailua, Big Island in January before you book your next holiday to Hawaii in 2026/2027.

  • 68°F maximum daytime temperature in January in Kailua, Big Island68
    68°F max day temperature
  • 13 days with some rainfall in January in Kailua, Big Island13
    13 days with some rainfall
  • 54°F minimum night-time temperature in January in Kailua, Big Island54
    54°F min night temperature
  • 11 hours of daylight per day in January in Kailua, Big Island11
    11 hours of daylight per day
  • Low heat & humidity in January in Kailua, Big IslandL
    Low heat & humidity
  • 2.3 inches monthly rainfall in January in Kailua, Big Island2.3
    2.3 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in January in Kailua, Big Island8
    8 (Very High) UV index
  • 77°F sea temperature in January in Kailua, Big Island77
    77°F sea temperature

More about Kailua, Big Island

Kailua, Big Island by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Hawaii

Auto Europe: Cheap car hire deals worldwide

  • Compare car hire prices to find lowest rate
  • Free cancellation up to 48 hours before pick up
  • Book car hire for over 20,000 destinations worldwide
Go to Auto Europe deal >>

View all Auto Europe offers

The January weather guide for Hawaii (Kailua, Big Island) 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)

Back to top

More about the USA

How hot is it in Kailua, Big Island in January?

Daytime temperatures usually reach 68°F in Kailua, Big Island in January, falling to 54°F at night.

How warm is the sea around Kailua, Big Island in January?

The average sea temperature around Kailua, Big Island in January is 77°F.

Does it rain in Kailua, Big Island in January?

There are usually 13 days with some rain in Kailua, Big Island in January and the average monthly rainfall is 2.3 inches.

Kailua, Big Island January sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 06:59 17:57
Friday, 16th January 2026 07:01 18:07
Saturday, 31st January 2026 06:59 18:16

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^