New Plymouth weather in September 2025

Expect daytime maximum temperatures of 14°C in New Plymouth in September based on long-term weather averages. There are 5 hours of sunshine per day on average with 16 days with some rainfall and typically 142 mm of rainfall in the month.

  • 14°C maximum daytime temperature in September in New Plymouth14
    14°C max day temperature
  • 5 hours of sunshine per day
  • 16 days with some rainfall in September in New Plymouth16
    16 days with some rainfall
  • 7°C minimum night-time temperature in September in New Plymouth7
    7°C min night temperature
  • 12 hours of daylight per day in September in New Plymouth12
    12 hours of daylight per day
  • No heat & humidity in September in New Plymouth0
    No heat & humidity
  • 142 mm monthly rainfall in September in New Plymouth142
    142 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in New Plymouth4
    4 (Moderate) UV index
  • 14°C sea temperature in September in New Plymouth14
    14°C sea temperature

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The September weather guide for New Zealand (New Plymouth) 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 New Plymouth in September?

Daytime temperatures usually reach 14°C in New Plymouth in September, falling to 7°C at night.

How sunny is it in New Plymouth in September?

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

How warm is the sea around New Plymouth in September?

The average sea temperature around New Plymouth in September is 14°C.

Does it rain in New Plymouth in September?

There are usually 16 days with some rain in New Plymouth in September and the average monthly rainfall is 142mm.

New Plymouth September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:47 18:01
Monday, 15th September 2025 06:25 18:14
Tuesday, 30th September 2025 06:01 18:27

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