Samoa weather in September 2025

Expect 29°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Samoa in September. Check more long-term weather averages for Samoa in September before you book your next holiday to Samoa in 2025/2026.

  • 29°C maximum daytime temperature in September in Samoa (Apia)29
    29°C max day temperature
  • 8 hours of sunshine per day
  • 5 days with some rainfall in September in Samoa (Apia)5
    5 days with some rainfall
  • 23°C minimum night-time temperature in September in Samoa (Apia)23
    23°C min night temperature
  • 12 hours of daylight per day in September in Samoa (Apia)12
    12 hours of daylight per day
  • High heat & humidity in September in Samoa (Apia)H
    High heat & humidity
  • 180 mm monthly rainfall in September in Samoa (Apia)180
    180 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Samoa (Apia)11
    11+ (Extreme) UV index
  • 28°C sea temperature in September in Samoa (Apia)28
    28°C sea temperature

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The September weather guide for Samoa (Apia) 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.

Top Samoa destinations

Below are average maximum temperatures at popular countries, regions and places in Samoa in September. Select a holiday destination to see more weather parameters.

All Samoa destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Samoa in September?

Daytime temperatures usually reach 29°C in Apia, Samoa in September with high heat and humidity, falling to 23°C at night.

How sunny is it in Samoa in September?

There are normally 8 hours of bright sunshine each day in Apia, Samoa in September - that's 67% of daylight hours.

How warm is the sea around Samoa in September?

The average sea temperature around Apia, Samoa in September is 28°C.

Does it rain in Samoa in September?

There are usually 5 days with some rain in Apia, Samoa in September and the average monthly rainfall is 180mm.

Samoa September sunrise & sunset times

Browse the sunrise and sunset times for Samoa in September 2025. Select a month to view Samoa sunrise and sunset times for the next 12 months. The Samoa sunrise and sunset times shown below are for Apia.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:32 18:22
Monday, 15th September 2025 06:22 18:23
Tuesday, 30th September 2025 06:11 18:23

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