Hulopoe Bay, Lanai weather in September 2025

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

  • 28°C maximum daytime temperature in September in Hulopoe Bay, Lanai28
    28°C max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in September in Hulopoe Bay, Lanai8
    8 days with some rainfall
  • 19°C minimum night-time temperature in September in Hulopoe Bay, Lanai19
    19°C min night temperature
  • 12 hours of daylight per day in September in Hulopoe Bay, Lanai12
    12 hours of daylight per day
  • Moderate heat & humidity in September in Hulopoe Bay, LanaiM
    Moderate heat & humidity
  • 21 mm monthly rainfall in September in Hulopoe Bay, Lanai21
    21 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in September in Hulopoe Bay, Lanai11
    11 (Extreme) UV index
  • 27°C sea temperature in September in Hulopoe Bay, Lanai27
    27°C sea temperature

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Hulopoe Bay, Lanai by month

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The September weather guide for Hawaii (Hulopoe Bay, Lanai) 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 Hulopoe Bay, Lanai in September?

Daytime temperatures usually reach 28°C in Hulopoe Bay, Lanai in September with moderate heat and humidity, falling to 19°C at night.

How sunny is it in Hulopoe Bay, Lanai in September?

There are normally 9 hours of bright sunshine each day in Hulopoe Bay, Lanai in September - that's 70% of daylight hours.

How warm is the sea around Hulopoe Bay, Lanai in September?

The average sea temperature around Hulopoe Bay, Lanai in September is 27°C.

Does it rain in Hulopoe Bay, Lanai in September?

There are usually 8 days with some rain in Hulopoe Bay, Lanai in September and the average monthly rainfall is 21mm.

Hulopoe Bay, Lanai September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:12 18:43
Monday, 15th September 2025 06:15 18:30
Tuesday, 30th September 2025 06:18 18:16

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