Hilo, Big Island weather in July 2025

Expect 75°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Hilo, Big Island in July. Check more long-term weather averages for Hilo, Big Island in July before you book your next holiday to Hawaii in 2025/2026.

  • 75°F maximum daytime temperature in July in Hilo, Big Island75
    75°F max day temperature
  • 5 hours of sunshine per day
  • 16 days with some rainfall in July in Hilo, Big Island16
    16 days with some rainfall
  • 61°F minimum night-time temperature in July in Hilo, Big Island61
    61°F min night temperature
  • 13 hours of daylight per day in July in Hilo, Big Island13
    13 hours of daylight per day
  • Moderate heat & humidity in July in Hilo, Big IslandM
    Moderate heat & humidity
  • 10.8 inches monthly rainfall in July in Hilo, Big Island10.8
    10.8 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in July in Hilo, Big Island11
    11+ (Extreme) UV index
  • 79°F sea temperature in July in Hilo, Big Island79
    79°F sea temperature

More about Hilo, Big Island

Hilo, Big Island by month

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The July 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 July?

Daytime temperatures usually reach 75°F in Hilo, Big Island in July, falling to 61°F at night.

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

There are normally 5 hours of bright sunshine each day in Hilo, Big Island in July - that's 41% of daylight hours.

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

The average sea temperature around Hilo, Big Island in July is 79°F.

Does it rain in Hilo, Big Island in July?

There are usually 16 days with some rain in Hilo, Big Island in July and the average monthly rainfall is 10.8 inches.

Hilo, Big Island July sunrise & sunset times

Browse the sunrise and sunset times for Hilo, Big Island in July 2025. Select a month to view Hilo, Big Island sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 05:45 19:03
Wednesday, 16th July 2025 05:51 19:02
Thursday, 31st July 2025 05:56 18:57

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