Cook Islands weather in September 2019

  • 26°C maximum daytime temperature in September in Cook Islands (Avarua)26
    26°C max day temperature
  • -9999 hours of sunshine per day
  • 5 days with some rainfall in September in Cook Islands (Avarua)5
    5 days with some rainfall
  • 19°C minimum night-time temperature in September in Cook Islands (Avarua)19
    19°C min night temperature
  • 12 hours of daylight per day in September in Cook Islands (Avarua)12
    12 hours of daylight per day
  • Low heat & humidity in September in Cook Islands (Avarua)L
    Low heat & humidity
  • 132 mm monthly rainfall in September in Cook Islands (Avarua)132
    132 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in September in Cook Islands (Avarua)10
    10 (Very High) UV index
  • 24°C sea temperature in September in Cook Islands (Avarua)24
    24°C sea temperature

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Expect 26°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in Cook Islands in September. Check more long-term weather averages for Cook Islands in September before you book your next holiday to Cook Islands in 2019/2020. The September weather averages shown above are for Avarua.

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More about Cook Islands

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The September weather guide for Cook Islands, represented by Avarua, 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 Cook Islands weather in September

The average maximum daytime temperature in Cook Islands in September is a warm 26°C (79°F) with low heat & humidity. The average night-time temperature is usually a comfortable 19°C (66°F).

Expect 132mm (5.2 inches) of rainfall across the whole of September with 5 days with some rain falling. Maximum UV levels will be very high (10 UV index) at midday when the skies are clear.

The average sea temperature in and around Cook Islands in September is 24°C (75°F).

The weather in Cook Islands in September is represented by Avarua.

Cook Islands sunrise & sunset times for September 2019

Browse the sunrise & sunset times for Cook Islands in September 2019. Select a month to view Cook Islands sunrise & sunset times for the next twelve months. The Cook Islands sunrise & sunset times shown below are for Avarua.

JanFebMarAprMayJunJulAugSepOctNovDec

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