Kailua, Big Island weather in July 2026

Expect daytime maximum temperatures of 23°C in Kailua, Big Island, Hawaii in July based on long-term weather averages. There are 17 days with some rainfall and typically 58 mm of rainfall in the month.

  • 23°C maximum daytime temperature in July in Kailua, Big Island23
    23°C max day temperature
  • 17 days with some rainfall in July in Kailua, Big Island17
    17 days with some rainfall
  • 15°C minimum night-time temperature in July in Kailua, Big Island15
    15°C min night temperature
  • 13 hours of daylight per day in July in Kailua, Big Island13
    13 hours of daylight per day
  • Moderate heat & humidity in July in Kailua, Big IslandM
    Moderate heat & humidity
  • 58 mm monthly rainfall in July in Kailua, Big Island58
    58 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in July in Kailua, Big Island11
    11+ (Extreme) UV index
  • 26°C sea temperature in July in Kailua, Big Island26
    26°C sea temperature

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Kailua, Big Island by month

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The July 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 / mm)  |  Imperial (°F / inches)

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

Daytime temperatures usually reach 29°C in Kailua, Big Island in July with high heat and humidity, falling to 22°C at night.

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

There are normally 10 hours of bright sunshine each day in Kailua, Big Island in July - that's 72% of daylight hours.

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

The average sea temperature around Kailua, Big Island in July is 26°C.

Does it rain in Kailua, Big Island in July?

There are usually 8 days with some rain in Kailua, Big Island in July and the average monthly rainfall is 13mm.

Kailua, Big Island July sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st July 2026 05:49 19:07
Thursday, 16th July 2026 05:54 19:06
Friday, 31st July 2026 06:00 19:01

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