Sydney weather in September 2025

Expect 18°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Sydney in September. Check more long-term weather averages for Sydney in September before you book your next holiday to Nova Scotia in 2025/2026.

  • 18°C maximum daytime temperature in September in Sydney18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 12 days with some rainfall in September in Sydney12
    12 days with some rainfall
  • 9°C minimum night-time temperature in September in Sydney9
    9°C min night temperature
  • 13 hours of daylight per day in September in Sydney13
    13 hours of daylight per day
  • No heat & humidity in September in Sydney0
    No heat & humidity
  • 109 mm monthly rainfall in September in Sydney109
    109 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Sydney5
    5 (Moderate) UV index
  • 16°C sea temperature in September in Sydney16
    16°C sea temperature

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The September weather guide for Nova Scotia (Sydney) 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 hot is it in Sydney in September?

Daytime temperatures usually reach 18°C in Sydney in September, falling to 9°C at night.

How sunny is it in Sydney in September?

There are normally 5 hours of bright sunshine each day in Sydney in September - that's 43% of daylight hours.

How warm is the sea around Sydney in September?

The average sea temperature around Sydney in September is 16°C.

Does it rain in Sydney in September?

There are usually 12 days with some rain in Sydney in September and the average monthly rainfall is 109mm.

What is the chance of a hurricane in Sydney in September?

On average less than 1 day in September in Sydney is likely to be affected by the passage of one or more tropical storms.

Sydney September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:22 18:39
Monday, 15th September 2025 05:39 18:12
Tuesday, 30th September 2025 05:58 17:42

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