Colonia weather in September 2025

Expect 18°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Colonia in September. Check more long-term weather averages for Colonia in September before you book your next holiday to Uruguay in 2025/2026.

  • 18°C maximum daytime temperature in September in Colonia18
    18°C max day temperature
  • 7 hours of sunshine per day
  • 8 days with some rainfall in September in Colonia8
    8 days with some rainfall
  • 10°C minimum night-time temperature in September in Colonia10
    10°C min night temperature
  • 12 hours of daylight per day in September in Colonia12
    12 hours of daylight per day
  • No heat & humidity in September in Colonia0
    No heat & humidity
  • 74 mm monthly rainfall in September in Colonia74
    74 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Colonia6
    6 (High) UV index
  • 15°C sea temperature in September in Colonia15
    15°C sea temperature

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The September weather guide for Uruguay (Colonia) 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 Colonia in September?

Daytime temperatures usually reach 18°C in Colonia in September, falling to 10°C at night.

How sunny is it in Colonia in September?

There are normally 7 hours of bright sunshine each day in Colonia in September - that's 55% of daylight hours.

How warm is the sea around Colonia in September?

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

Does it rain in Colonia in September?

There are usually 8 days with some rain in Colonia in September and the average monthly rainfall is 74mm.

Colonia September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 07:10 18:33
Monday, 15th September 2025 06:50 18:43
Tuesday, 30th September 2025 06:29 18:54

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