Hawaii weather in May 2025

Expect 28°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Hawaii in May. Check more long-term weather averages for Hawaii in May before you book your next holiday to Hawaii in 2025/2026.

  • 28°C maximum daytime temperature in May in Hawaii (Honolulu, Oahu)28
    28°C max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in May in Hawaii (Honolulu, Oahu)8
    8 days with some rainfall
  • 20°C minimum night-time temperature in May in Hawaii (Honolulu, Oahu)20
    20°C min night temperature
  • 13 hours of daylight per day in May in Hawaii (Honolulu, Oahu)13
    13 hours of daylight per day
  • Moderate heat & humidity in May in Hawaii (Honolulu, Oahu)M
    Moderate heat & humidity
  • 16 mm monthly rainfall in May in Hawaii (Honolulu, Oahu)16
    16 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in May in Hawaii (Honolulu, Oahu)11
    11 (Extreme) UV index
  • 25°C sea temperature in May in Hawaii (Honolulu, Oahu)25
    25°C sea temperature

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The May weather guide for Hawaii (Honolulu, 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.

Top Hawaii destinations

Below are average maximum temperatures at popular countries, regions and places in Hawaii in May. Select a holiday destination to see more weather parameters.

All Hawaii destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Hawaii in May?

Daytime temperatures usually reach 28°C in Honolulu, Oahu, Hawaii in May with moderate heat and humidity, falling to 20°C at night.

How sunny is it in Hawaii in May?

There are normally 9 hours of bright sunshine each day in Honolulu, Oahu, Hawaii in May - that's 67% of daylight hours.

How warm is the sea around Hawaii in May?

The average sea temperature around Honolulu, Oahu, Hawaii in May is 25°C.

Does it rain in Hawaii in May?

There are usually 8 days with some rain in Honolulu, Oahu, Hawaii in May and the average monthly rainfall is 16mm.

Hawaii May sunrise & sunset times

Browse the sunrise and sunset times for Hawaii in May 2025. Select a month to view Hawaii sunrise and sunset times for the next 12 months. The Hawaii sunrise and sunset times shown below are for Honolulu, Oahu.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 06:00 18:57
Friday, 16th May 2025 05:53 19:03
Saturday, 31st May 2025 05:49 19:10

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