Mitiaro weather in September 2025

Expect 27°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in Mitiaro in September. Check more long-term weather averages for Mitiaro in September before you book your next holiday to Cook Islands in 2025/2026.

  • 27°C maximum daytime temperature in September in Mitiaro27
    27°C max day temperature
  • 5 days with some rainfall in September in Mitiaro5
    5 days with some rainfall
  • 21°C minimum night-time temperature in September in Mitiaro21
    21°C min night temperature
  • 12 hours of daylight per day in September in Mitiaro12
    12 hours of daylight per day
  • Moderate heat & humidity in September in MitiaroM
    Moderate heat & humidity
  • 78 mm monthly rainfall in September in Mitiaro78
    78 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in September in Mitiaro10
    10 (Very High) UV index
  • 25°C sea temperature in September in Mitiaro25
    25°C sea temperature

More about the Mitiaro

Mitiaro by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for the Cook Islands

Holiday Autos discount code: up to 10% off global car hire

  • Save up to 10% on cheap car hire worldwide
  • Exclusive Holiday Autos discount code automatically applied
  • Travel before 31st December 2024 (inclusive)
Show discount codeShow discount code ******vel
Redeem Holiday Autos discount code >>

Expires at 23:59 on Tuesday 31st Dec 2024 · View all Holiday Autos offers

Holiday AutosCar hire finder

The September weather guide for Cook Islands (Mitiaro) 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)

Back to top

How hot is it in Mitiaro in September?

Daytime temperatures usually reach 27°C in Mitiaro in September with moderate heat and humidity, falling to 21°C at night.

How warm is the sea around Mitiaro in September?

The average sea temperature around Mitiaro in September is 25°C.

Does it rain in Mitiaro in September?

There are usually 5 days with some rain in Mitiaro in September and the average monthly rainfall is 78mm.

Mitiaro September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:39 18:23
Monday, 15th September 2025 06:26 18:26
Tuesday, 30th September 2025 06:13 18:29

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^