Wellington weather in September 2025

Expect 13°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Wellington in September. Check more long-term weather averages for Wellington in September before you book your next holiday to New Zealand in 2025/2026.

  • 13°C maximum daytime temperature in September in Wellington13
    13°C max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in September in Wellington15
    15 days with some rainfall
  • 7°C minimum night-time temperature in September in Wellington7
    7°C min night temperature
  • 12 hours of daylight per day in September in Wellington12
    12 hours of daylight per day
  • No heat & humidity in September in Wellington0
    No heat & humidity
  • 104 mm monthly rainfall in September in Wellington104
    104 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Wellington4
    4 (Moderate) UV index
  • 12°C sea temperature in September in Wellington12
    12°C sea temperature

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

Daytime temperatures usually reach 13°C in Wellington in September, falling to 7°C at night.

How sunny is it in Wellington in September?

There are normally 5 hours of bright sunshine each day in Wellington in September - that's 42% of daylight hours.

How warm is the sea around Wellington in September?

The average sea temperature around Wellington in September is 12°C.

Does it rain in Wellington in September?

There are usually 15 days with some rain in Wellington in September and the average monthly rainfall is 104mm.

Wellington September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:46 17:56
Monday, 15th September 2025 06:23 18:10
Tuesday, 30th September 2025 05:57 18:26

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