Chatham Island weather in September 2025

Expect 11°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Chatham Island in September. Check more long-term weather averages for Chatham Island in September before you book your next holiday to New Zealand in 2025/2026.

  • 11°C maximum daytime temperature in September in Chatham Island11
    11°C max day temperature
  • 4 hours of sunshine per day
  • 3 days with some rainfall in September in Chatham Island3
    3 days with some rainfall
  • 6°C minimum night-time temperature in September in Chatham Island6
    6°C min night temperature
  • 12 hours of daylight per day in September in Chatham Island12
    12 hours of daylight per day
  • No heat & humidity in September in Chatham Island0
    No heat & humidity
  • 72 mm monthly rainfall in September in Chatham Island72
    72 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Chatham Island3
    3 (Moderate) UV index
  • 11°C sea temperature in September in Chatham Island11
    11°C sea temperature

More about Chatham Island

Chatham Island by month

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

Recommended for New Zealand

Travelbag: Latest holiday sale offers worldwide

  • Explore latest sale offers on holidays in 2025/2026
  • Filter deals by continent, star rating & holiday type
  • Including Dubai, Caribbean, North America, Asia & Pacific
Go to Travelbag deal >>

View all Travelbag offers

TravelbagHoliday deal finder

The September weather guide for New Zealand (Chatham Island) 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 warm is it in Chatham Island in September?

Daytime temperatures usually reach 11°C in Chatham Island in September, falling to 6°C at night.

How sunny is it in Chatham Island in September?

There are normally 4 hours of bright sunshine each day in Chatham Island in September - that's 30% of daylight hours.

Is the sea cold around Chatham Island in September?

The average sea temperature around Chatham Island in September is 11°C.

Does it ever rain in Chatham Island in September?

There are usually 3 days with some rain in Chatham Island in September and the average monthly rainfall is 72mm.

Chatham Island September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:59 18:04
Monday, 15th September 2025 06:34 18:20
Tuesday, 30th September 2025 06:06 18:37

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^