Santiago weather in September 2025

Expect 16°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Santiago in September. Check more long-term weather averages for Santiago in September before you book your next holiday to Chile in 2025/2026.

  • 16°C maximum daytime temperature in September in Santiago16
    16°C max day temperature
  • 6 hours of sunshine per day
  • 4 days with some rainfall in September in Santiago4
    4 days with some rainfall
  • 5°C minimum night-time temperature in September in Santiago5
    5°C min night temperature
  • 12 hours of daylight per day in September in Santiago12
    12 hours of daylight per day
  • No heat & humidity in September in Santiago0
    No heat & humidity
  • 32 mm monthly rainfall in September in Santiago32
    32 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Santiago6
    6 (High) UV index

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The September weather guide for Chile (Santiago) 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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More about Santiago

How warm is it in Santiago in September?

Daytime temperatures usually reach 16°C in Santiago in September, falling to 5°C at night.

How sunny is it in Santiago in September?

There are normally 6 hours of bright sunshine each day in Santiago in September - that's 49% of daylight hours.

Does it rain in Santiago in September?

There are usually 4 days with some rain in Santiago in September and the average monthly rainfall is 32mm.

Santiago September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 07:00 18:25
Monday, 15th September 2025 06:41 18:34
Tuesday, 30th September 2025 06:20 18:44

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