Kailua, Oahu weather in July 2025

Expect 30°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Kailua, Oahu in July. Check more long-term weather averages for Kailua, Oahu in July before you book your next holiday to Hawaii in 2025/2026.

  • 30°C maximum daytime temperature in July in Kailua, Oahu30
    30°C max day temperature
  • 10 hours of sunshine per day
  • 8 days with some rainfall in July in Kailua, Oahu8
    8 days with some rainfall
  • 22°C minimum night-time temperature in July in Kailua, Oahu22
    22°C min night temperature
  • 13 hours of daylight per day in July in Kailua, Oahu13
    13 hours of daylight per day
  • Moderate heat & humidity in July in Kailua, OahuM
    Moderate heat & humidity
  • 41 mm monthly rainfall in July in Kailua, Oahu41
    41 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in July in Kailua, Oahu11
    11+ (Extreme) UV index
  • 26°C sea temperature in July in Kailua, Oahu26
    26°C sea temperature

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The July weather guide for Hawaii (Kailua, Oahu) 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, Oahu in July?

Daytime temperatures usually reach 30°C in Kailua, Oahu in July with moderate heat and humidity, falling to 22°C at night.

How sunny is it in Kailua, Oahu in July?

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

How warm is the sea around Kailua, Oahu in July?

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

Does it rain in Kailua, Oahu in July?

There are usually 8 days with some rain in Kailua, Oahu in July and the average monthly rainfall is 41mm.

Kailua, Oahu July sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 05:53 19:17
Wednesday, 16th July 2025 05:58 19:16
Thursday, 31st July 2025 06:04 19:10

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