Hilo, Big Island weather in October 2026

Expect daytime maximum temperatures of 75°F in Hilo, Big Island, Hawaii in October based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 9.8 inches of rainfall in the month.

  • 75°F maximum daytime temperature in October in Hilo, Big Island75
    75°F max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in October in Hilo, Big Island15
    15 days with some rainfall
  • 61°F minimum night-time temperature in October in Hilo, Big Island61
    61°F min night temperature
  • 12 hours of daylight per day in October in Hilo, Big Island12
    12 hours of daylight per day
  • Moderate heat & humidity in October in Hilo, Big IslandM
    Moderate heat & humidity
  • 9.8 inches monthly rainfall in October in Hilo, Big Island9.8
    9.8 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in October in Hilo, Big Island10
    10 (Very High) UV index
  • 79°F sea temperature in October in Hilo, Big Island79
    79°F sea temperature

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The October 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)  |  Imperial (°F)

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More about the USA

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

Daytime temperatures usually reach 84°F in Hilo, Big Island in October with high heat and humidity, falling to 70°F at night.

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

There are normally 8 hours of bright sunshine each day in Hilo, Big Island in October - that's 66% of daylight hours.

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

The average sea temperature around Hilo, Big Island in October is 81°F.

Does it rain in Hilo, Big Island in October?

There are usually 9 days with some rain in Hilo, Big Island in October and the average monthly rainfall is 1.9 inches.

Hilo, Big Island October sunrise & sunset times

Browse the sunrise and sunset times for Hilo, Big Island in October 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 October 2026 06:11 18:08
Friday, 16th October 2026 06:15 17:56
Saturday, 31st October 2026 06:21 17:47

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