Hanalei, Kauai weather in May 2026

Expect daytime maximum temperatures of 81°F in Hanalei, Kauai, Hawaii in May based on long-term weather averages. There are 8 hours of sunshine per day on average with 16 days with some rainfall and typically 5.1 inches of rainfall in the month.

  • 81°F maximum daytime temperature in May in Hanalei, Kauai81
    81°F max day temperature
  • 8 hours of sunshine per day
  • 16 days with some rainfall in May in Hanalei, Kauai16
    16 days with some rainfall
  • 70°F minimum night-time temperature in May in Hanalei, Kauai70
    70°F 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
  • 5.1 inches monthly rainfall in May in Hanalei, Kauai5.1
    5.1 inches of monthly rainfall
  • UV (maximum) index 11 (Extreme) in May in Hanalei, Kauai11
    11 (Extreme) UV index
  • 77°F sea temperature in May in Hanalei, Kauai77
    77°F sea temperature

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Hanalei, Kauai by month

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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)  |  Imperial (°F)

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How hot is it in Hanalei, Kauai in May?

Daytime temperatures usually reach 82°F in Hanalei, Kauai in May with moderate heat and humidity, falling to 68°F at night.

How sunny is it in Hanalei, Kauai in May?

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

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

The average sea temperature around Hanalei, Kauai in May is 77°F.

Does it rain in Hanalei, Kauai in May?

There are usually 8 days with some rain in Hanalei, Kauai in May and the average monthly rainfall is 0.6 inches.

Hanalei, Kauai May sunrise & sunset times

Browse the sunrise and sunset times for Hanalei, Kauai in May 2026. Select a month to view Hanalei, Kauai sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 06:06 19:05
Saturday, 16th May 2026 05:58 19:11
Sunday, 31st May 2026 05:54 19:18

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