Cagliari weather in September 2025

Expect 27°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Cagliari in September. Check more long-term weather averages for Cagliari in September before you book your next holiday to Sardinia in 2025/2026.

  • 27°C maximum daytime temperature in September in Cagliari27
    27°C max day temperature
  • 8 hours of sunshine per day
  • 7 days with some rainfall in September in Cagliari7
    7 days with some rainfall
  • 17°C minimum night-time temperature in September in Cagliari17
    17°C min night temperature
  • 12 hours of daylight per day in September in Cagliari12
    12 hours of daylight per day
  • Low heat & humidity in September in CagliariL
    Low heat & humidity
  • 36 mm monthly rainfall in September in Cagliari36
    36 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Cagliari6
    6 (High) UV index
  • 24°C sea temperature in September in Cagliari24
    24°C sea temperature

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The September weather guide for Sardinia (Cagliari) 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 Sardinia

How hot is it in Cagliari in September?

Daytime temperatures usually reach 27°C in Cagliari in September with low heat and humidity, falling to 17°C at night.

How sunny is it in Cagliari in September?

There are normally 8 hours of bright sunshine each day in Cagliari in September - that's 66% of daylight hours.

How warm is the sea around Cagliari in September?

The average sea temperature around Cagliari in September is 24°C.

Does it rain in Cagliari in September?

There are usually 7 days with some rain in Cagliari in September and the average monthly rainfall is 36mm.

Cagliari September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:52 18:54
Monday, 15th September 2025 06:05 18:32
Tuesday, 30th September 2025 06:19 18:08

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