Swimming in Sardinia in september 2025 Sea temperature by city in september

Do you want to go to the beach in Sardinia in september 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in september in Sardinia by city and our opinion on the chances of enjoying pleasant sea conditions.

Sea temperature in Sardinia in september 2025

Here, find the average sea temperature in Sardinia in september in several coastal cities.

Cagliari

on average:

76°F

min: 71°F / max: 80°F

Alghero

on average:

75°F

min: 70°F / max: 79°F

Olbia

on average:

75°F

min: 70°F / max: 80°F

Castelsardo

on average:

75°F

min: 70°F / max: 79°F

Cala Luna

on average:

75°F

min: 70°F / max: 81°F

Capo San Marco

on average:

76°F

min: 71°F / max: 79°F

Sulcis

on average:

76°F

min: 71°F / max: 79°F

Isola Tavolara

on average:

75°F

min: 70°F / max: 81°F

La Maddalena

on average:

75°F

min: 70°F / max: 80°F

Porto Cervo

on average:

75°F

min: 70°F / max: 81°F

San Teodoro

on average:

75°F

min: 70°F / max: 81°F

Stintino

on average:

74°F

min: 70°F / max: 79°F

Arbatax

on average:

75°F

min: 70°F / max: 80°F

Bosa

on average:

75°F

min: 70°F / max: 79°F

Carbonia

on average:

75°F

min: 71°F / max: 79°F

Carloforte

on average:

76°F

min: 71°F / max: 80°F

Dorgali - Cala Gonone

on average:

75°F

min: 70°F / max: 80°F

Muravera

on average:

76°F

min: 71°F / max: 80°F

Oristano

on average:

75°F

min: 71°F / max: 79°F

Orosei

on average:

75°F

min: 70°F / max: 80°F

Palau

on average:

74°F

min: 70°F / max: 80°F

Porto Torres

on average:

75°F

min: 70°F / max: 79°F

Pula

on average:

76°F

min: 71°F / max: 80°F

Santa Teresa Gallura

on average:

74°F

min: 69°F / max: 80°F

Villasimius

on average:

75°F

min: 71°F / max: 80°F

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Sea temperature in august in Sardinia

Sea temperature in october in Sardinia

Where should you go swimming in Sardinia in the month of september?

Swimming in Sardinia in september is pleasant

In september in Sardinia swimming conditions are generally the same everywhere.

As for Cagliari, Alghero, Olbia, Castelsardo, Cala Luna, Capo San Marco, Sulcis, Isola Tavolara, La Maddalena, Porto Cervo, San Teodoro, Stintino, Arbatax, Bosa, Carbonia, Carloforte, Dorgali - Cala Gonone, Muravera, Oristano, Orosei, Palau, Porto Torres, Pula, Santa Teresa Gallura and Villasimius, swimming is pleasant in september. The sea water is 76°F on average (min: 71°F/max: 80°F) so you can easily spend time in the water.

Where to go swimming in Sardinia in september: the map of sea temperatures

ideal swimming

pleasant swimming

cool swimming

cold swimming

freezing swimming

Water temperature and seasonal norms in september

Cagliari

	August	September	October
Average sea temperature	77°F	76°F	72°F
Minimum sea temperature	73°F	71°F	68°F
Maximum sea temperature	81°F	80°F	75°F
Average outside temperature	83°F	77°F	70°F
Maximum outside temperature	88°F	81°F	74°F
Minimum outside temperature	77°F	72°F	65°F
Precipitation	1in	2.3in	2.6in
Number of days of precipitation	1 jour(s) (4%)	3 jour(s) (11%)	4 jour(s) (12%)
Cloud cover	7%	16%	20%
Our opinion	pleasant swimming	pleasant swimming	pleasant swimming

More information on swimming in Cagliari in september

Alghero

	August	September	October
Average sea temperature	76°F	75°F	71°F
Minimum sea temperature	72°F	70°F	67°F
Maximum sea temperature	80°F	79°F	74°F
Average outside temperature	81°F	76°F	68°F
Maximum outside temperature	83°F	79°F	72°F
Minimum outside temperature	77°F	70°F	65°F
Precipitation	1in	2.6in	4.1in
Number of days of precipitation	2 jour(s) (5%)	4 jour(s) (14%)	5 jour(s) (17%)
Cloud cover	8%	18%	23%
Our opinion	pleasant swimming	pleasant swimming	pleasant swimming

More information on swimming in Alghero in september

Olbia

	August	September	October
Average sea temperature	77°F	75°F	71°F
Minimum sea temperature	73°F	70°F	66°F
Maximum sea temperature	81°F	80°F	75°F
Average outside temperature	83°F	76°F	68°F
Maximum outside temperature	88°F	81°F	74°F
Minimum outside temperature	76°F	70°F	61°F
Precipitation	0.8in	2.6in	2.9in
Number of days of precipitation	1 jour(s) (3%)	4 jour(s) (13%)	4 jour(s) (14%)
Cloud cover	7%	18%	23%
Our opinion	pleasant swimming	pleasant swimming	pleasant swimming

More information on swimming in Olbia in september

Castelsardo

	August	September	October
Average sea temperature	76°F	75°F	71°F
Minimum sea temperature	72°F	70°F	67°F
Maximum sea temperature	80°F	79°F	74°F
Average outside temperature	79°F	74°F	67°F
Maximum outside temperature	85°F	77°F	70°F
Minimum outside temperature	74°F	70°F	63°F
Precipitation	1.1in	2.3in	3.3in
Number of days of precipitation	1 jour(s) (4%)	3 jour(s) (11%)	5 jour(s) (15%)
Cloud cover	8%	18%	23%
Our opinion	pleasant swimming	pleasant swimming	pleasant swimming

More information on swimming in Castelsardo in september

Cala Luna

	August	September	October
Average sea temperature	77°F	75°F	70°F
Minimum sea temperature	73°F	70°F	66°F
Maximum sea temperature	81°F	81°F	75°F
Average outside temperature	83°F	74°F	65°F
Maximum outside temperature	90°F	81°F	72°F
Minimum outside temperature	74°F	67°F	58°F
Precipitation	1.8in	2.7in	2.7in
Number of days of precipitation	3 jour(s) (9%)	3 jour(s) (11%)	4 jour(s) (12%)
Cloud cover	8%	20%	26%
Our opinion	pleasant swimming	pleasant swimming	pleasant swimming

List of coastal cities in Sardinia

Cagliari in september	pleasant swimming
Alghero in september	pleasant swimming
Olbia in september	pleasant swimming
Castelsardo in september	pleasant swimming
Cala Luna in september	pleasant swimming
Capo San Marco in september	pleasant swimming
Sulcis in september	pleasant swimming
Isola Tavolara in september	pleasant swimming
La Maddalena in september	pleasant swimming
Porto Cervo in september	pleasant swimming
San Teodoro in september	pleasant swimming
Stintino in september	pleasant swimming
Arbatax in september	pleasant swimming
Bosa in september	pleasant swimming
Carbonia in september	pleasant swimming
Carloforte in september	pleasant swimming
Dorgali - Cala Gonone in september	pleasant swimming
Muravera in september	pleasant swimming
Oristano in september	pleasant swimming
Orosei in september	pleasant swimming
Palau in september	pleasant swimming
Porto Torres in september	pleasant swimming
Pula in september	pleasant swimming
Santa Teresa Gallura in september	pleasant swimming
Villasimius in september	pleasant swimming