Hanalei, Kauai weather in May 2025

Expect 27°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Hanalei, Kauai in May. Check more long-term weather averages for Hanalei, Kauai in May before you book your next holiday to Hawaii in 2025/2026.

  • 27°C maximum daytime temperature in May in Hanalei, Kauai27
    27°C max day temperature
  • 8 hours of sunshine per day
  • 16 days with some rainfall in May in Hanalei, Kauai16
    16 days with some rainfall
  • 21°C minimum night-time temperature in May in Hanalei, Kauai21
    21°C min night temperature
  • 13 hours of daylight per day in May in Hanalei, Kauai13
    13 hours of daylight per day
  • Moderate heat & humidity in May in Hanalei, KauaiM
    Moderate heat & humidity
  • 130 mm monthly rainfall in May in Hanalei, Kauai130
    130 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in May in Hanalei, Kauai11
    11 (Extreme) UV index
  • 25°C sea temperature in May in Hanalei, Kauai25
    25°C sea temperature

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The May weather guide for Hawaii (Hanalei, Kauai) 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 Hanalei, Kauai in May?

Daytime temperatures usually reach 27°C in Hanalei, Kauai in May with moderate heat and humidity, falling to 21°C at night.

How sunny is it in Hanalei, Kauai in May?

There are normally 8 hours of bright sunshine each day in Hanalei, Kauai in May - that's 61% of daylight hours.

How warm is the sea around Hanalei, Kauai in May?

The average sea temperature around Hanalei, Kauai in May is 25°C.

Does it rain in Hanalei, Kauai in May?

There are usually 16 days with some rain in Hanalei, Kauai in May and the average monthly rainfall is 130mm.

Hanalei, Kauai May sunrise & sunset times

Browse the sunrise and sunset times for Hanalei, Kauai in May 2025. Select a month to view Hanalei, Kauai sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 06:06 19:05
Friday, 16th May 2025 05:58 19:11
Saturday, 31st May 2025 05:54 19:18

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