Cagliari weather in September 2026

Q: How hot is it in Cagliari in September?

Daytime temperatures usually reach 26°C in Cagliari in September with low heat and humidity, falling to 17°C at night.

Q: 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.

Q: How warm is the sea around Cagliari in September?

The average sea temperature around Cagliari in September is 23°C.

Q: Does it rain in Cagliari in September?

There are usually 8 days with some rain in Cagliari in September and the average monthly rainfall is 30mm.

Expect daytime maximum temperatures of 81°F in Cagliari, Sardinia in September based on long-term weather averages. There are 8 hours of sunshine per day on average.

81
81°F max day temperature
8
8 hours of sunshine per day
7
7 days with some rainfall
63
63°F min night temperature
12
12 hours of daylight per day
L
Low heat & humidity
1.4
1.4 inches of monthly rainfall
6
6 (High) UV index
75
75°F 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) | Imperial (°F)

More about Sardinia

How hot is it in Cagliari in September?

Daytime temperatures usually reach 79°F in Cagliari in September with low heat and humidity, falling to 63°F 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 73°F.

Does it rain in Cagliari in September?

There are usually 8 days with some rain in Cagliari in September and the average monthly rainfall is 1.2 inches.

Cagliari September sunrise & sunset times

Browse the sunrise and sunset times for Cagliari in September 2026. Select a month to view Cagliari sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Tuesday, 1st September 2026	05:52	18:54
Tuesday, 15th September 2026	06:05	18:32
Wednesday, 30th September 2026	06:18	18:08

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Sardinia - quick facts
Flight time^✝	2.5 hours
Time difference	UK +1 hour
Language(s)	Italian
Currency	Euro
Electricity	C + F + L plug (230V)
Driving side	Right
Why visit?	Beaches Nature Nightlife
Tourist info	Sardinian Department of Tourism