Hilo, Big Island weather in January 2026

Expect daytime maximum temperatures of 21°C in Hilo, Big Island in January based on long-term weather averages. There are 5 hours of sunshine per day on average with 13 days with some rainfall and typically 235 mm of rainfall in the month.

  • 21°C maximum daytime temperature in January in Hilo, Big Island21
    21°C max day temperature
  • 5 hours of sunshine per day
  • 13 days with some rainfall in January in Hilo, Big Island13
    13 days with some rainfall
  • 13°C minimum night-time temperature in January in Hilo, Big Island13
    13°C min night temperature
  • 11 hours of daylight per day in January in Hilo, Big Island11
    11 hours of daylight per day
  • Low heat & humidity in January in Hilo, Big IslandL
    Low heat & humidity
  • 235 mm monthly rainfall in January in Hilo, Big Island235
    235 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in January in Hilo, Big Island8
    8 (Very High) UV index
  • 24°C sea temperature in January in Hilo, Big Island24
    24°C sea temperature

More about Hilo, Big Island

Hilo, Big Island by month

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The January weather guide for Hawaii (Hilo, 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 / mm)  |  Imperial (°F / inches)

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More about the USA

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

Daytime temperatures usually reach 21°C in Hilo, Big Island in January, falling to 13°C at night.

How sunny is it in Hilo, Big Island in January?

There are normally 5 hours of bright sunshine each day in Hilo, Big Island in January - that's 46% of daylight hours.

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

The average sea temperature around Hilo, Big Island in January is 24°C.

Does it rain in Hilo, Big Island in January?

There are usually 13 days with some rain in Hilo, Big Island in January and the average monthly rainfall is 235mm.

Hilo, Big Island January sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 06:55 17:53
Friday, 16th January 2026 06:58 18:03
Saturday, 31st January 2026 06:56 18:12

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