Lihue, Kauai weather in September 2025

Expect 29°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Lihue, Kauai in September. Check more long-term weather averages for Lihue, Kauai in September before you book your next holiday to Hawaii in 2025/2026.

  • 29°C maximum daytime temperature in September in Lihue, Kauai29
    29°C max day temperature
  • 8 hours of sunshine per day
  • 16 days with some rainfall in September in Lihue, Kauai16
    16 days with some rainfall
  • 23°C minimum night-time temperature in September in Lihue, Kauai23
    23°C min night temperature
  • 12 hours of daylight per day in September in Lihue, Kauai12
    12 hours of daylight per day
  • High heat & humidity in September in Lihue, KauaiH
    High heat & humidity
  • 54 mm monthly rainfall in September in Lihue, Kauai54
    54 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in September in Lihue, Kauai11
    11 (Extreme) UV index
  • 27°C sea temperature in September in Lihue, Kauai27
    27°C sea temperature

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Lihue, Kauai by month

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The September weather guide for Hawaii (Lihue, 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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More about the USA

How hot is it in Lihue, Kauai in September?

Daytime temperatures usually reach 29°C in Lihue, Kauai in September with high heat and humidity, falling to 23°C at night.

How sunny is it in Lihue, Kauai in September?

There are normally 8 hours of bright sunshine each day in Lihue, Kauai in September - that's 66% of daylight hours.

How warm is the sea around Lihue, Kauai in September?

The average sea temperature around Lihue, Kauai in September is 27°C.

Does it rain in Lihue, Kauai in September?

There are usually 16 days with some rain in Lihue, Kauai in September and the average monthly rainfall is 54mm.

Lihue, Kauai September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:21 18:54
Monday, 15th September 2025 06:24 18:40
Tuesday, 30th September 2025 06:29 18:25

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