Hawaii weather in September 2019

  • 30°C maximum daytime temperature in September in Hawaii (Honolulu, Oahu)30
    30°C max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in September in Hawaii (Honolulu, Oahu)8
    8 days with some rainfall
  • 22°C minimum night-time temperature in September in Hawaii (Honolulu, Oahu)22
    22°C min night temperature
  • 12 hours of daylight per day in September in Hawaii (Honolulu, Oahu)12
    12 hours of daylight per day
  • High heat & humidity in September in Hawaii (Honolulu, Oahu)H
    High heat & humidity
  • 18 mm monthly rainfall in September in Hawaii (Honolulu, Oahu)18
    18 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in September in Hawaii (Honolulu, Oahu)11
    11 (Extreme) UV index
  • 27°C sea temperature in September in Hawaii (Honolulu, Oahu)27
    27°C sea temperature

Going to Hawaii? Find the best month to visit Hawaii based on the weather.

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Expect 30°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Hawaii in September. Check more long-term weather averages for Hawaii in September before you book your next holiday to Hawaii in 2019/2020. The September weather averages shown above are for Honolulu, Oahu.

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More about Hawaii

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The September weather guide for Hawaii, represented by 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.

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

Guide to Hawaii weather in September

The average maximum daytime temperature in Hawaii in September is a hot 30°C (86°F) with high heat & humidity. The average night-time temperature is usually a warm 22°C (72°F). There are usually 9 hours of bright sunshine each day, which represents 74% of the 12 hours of daylight.

Expect 18mm (0.7 inches) of rainfall across the whole of September with 8 days with some rain falling. Maximum UV levels will be extreme (11 UV index) at midday when the skies are clear.

The average sea temperature in and around Hawaii in September is 27°C (81°F).

The weather in Hawaii in September is represented by Honolulu, Oahu.

Hawaii sunrise & sunset times for September 2019

Browse the sunrise & sunset times for Hawaii in September 2019. Select a month to view Hawaii sunrise & sunset times for the next twelve months. The Hawaii sunrise & sunset times shown below are for Honolulu, Oahu.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st September 2019 06:15 18:48
Monday, 2nd September 2019 06:15 18:47
Tuesday, 3rd September 2019 06:15 18:46
Wednesday, 4th September 2019 06:16 18:45
Thursday, 5th September 2019 06:16 18:44
Friday, 6th September 2019 06:16 18:43
Saturday, 7th September 2019 06:16 18:42
Sunday, 8th September 2019 06:17 18:41
Monday, 9th September 2019 06:17 18:40
Tuesday, 10th September 2019 06:17 18:39
Wednesday, 11th September 2019 06:17 18:38
Thursday, 12th September 2019 06:18 18:37
Friday, 13th September 2019 06:18 18:36
Saturday, 14th September 2019 06:18 18:35
Sunday, 15th September 2019 06:18 18:34
Monday, 16th September 2019 06:19 18:33
Tuesday, 17th September 2019 06:19 18:32
Wednesday, 18th September 2019 06:19 18:32
Thursday, 19th September 2019 06:19 18:31
Friday, 20th September 2019 06:20 18:30
Saturday, 21st September 2019 06:20 18:29
Sunday, 22nd September 2019 06:20 18:28
Monday, 23rd September 2019 06:20 18:27
Tuesday, 24th September 2019 06:21 18:26
Wednesday, 25th September 2019 06:21 18:25
Thursday, 26th September 2019 06:21 18:24
Friday, 27th September 2019 06:21 18:23
Saturday, 28th September 2019 06:22 18:22
Sunday, 29th September 2019 06:22 18:21
Monday, 30th September 2019 06:22 18:20
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