Antofagasta weather in September 2025

Expect 18°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Antofagasta in September. Check more long-term weather averages for Antofagasta in September before you book your next holiday to Chile in 2025/2026.

  • 18°C maximum daytime temperature in September in Antofagasta18
    18°C max day temperature
  • 8 hours of sunshine per day
  • 0 days with some rainfall in September in Antofagasta0
    0 days with some rainfall
  • 11°C minimum night-time temperature in September in Antofagasta11
    11°C min night temperature
  • 12 hours of daylight per day in September in Antofagasta12
    12 hours of daylight per day
  • No heat & humidity in September in Antofagasta0
    No heat & humidity
  • 2 mm monthly rainfall in September in Antofagasta2
    2 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in September in Antofagasta9
    9 (Very High) UV index
  • 15°C sea temperature in September in Antofagasta15
    15°C sea temperature

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The September weather guide for Chile (Antofagasta) 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 Chile

How hot is it in Antofagasta in September?

Daytime temperatures usually reach 18°C in Antofagasta in September, falling to 11°C at night.

How sunny is it in Antofagasta in September?

There are normally 8 hours of bright sunshine each day in Antofagasta in September - that's 65% of daylight hours.

How warm is the sea around Antofagasta in September?

The average sea temperature around Antofagasta in September is 15°C.

Does it ever rain in Antofagasta in September?

There are usually no days with some rain in Antofagasta in September and the average monthly rainfall is 2mm.

Antofagasta September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:52 18:31
Monday, 15th September 2025 06:38 18:36
Tuesday, 30th September 2025 06:23 18:41

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