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

Do you want to go to the beach in Santorini 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 Santorini by city and our opinion on the chances of enjoying pleasant sea conditions.

Sea temperature in Santorini in september 2025

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

Fira

on average:

76°F

min: 74°F / max: 79°F

Imerovigli

on average:

77°F

min: 74°F / max: 79°F

Kamari

on average:

76°F

min: 75°F / max: 79°F

Oia

on average:

76°F

min: 74°F / max: 79°F

Akrotiri

on average:

77°F

min: 74°F / max: 79°F

Ammoudi

on average:

76°F

min: 74°F / max: 79°F

Aspronissi

on average:

76°F

min: 74°F / max: 79°F

Exo Gialos Thiras

on average:

77°F

min: 74°F / max: 79°F

Finikia

on average:

77°F

min: 75°F / max: 79°F

Koloumpos

on average:

76°F

min: 74°F / max: 79°F

Megalochori

on average:

76°F

min: 75°F / max: 79°F

Monolithos

on average:

77°F

min: 75°F / max: 79°F

Néa Kameni

on average:

76°F

min: 74°F / max: 79°F

Palia Kameni

on average:

77°F

min: 74°F / max: 79°F

Paradisos

on average:

77°F

min: 75°F / max: 79°F

Períssa

on average:

77°F

min: 74°F / max: 79°F

Thirassía

on average:

77°F

min: 74°F / max: 79°F

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Sea temperature in august in Santorini

Sea temperature in october in Santorini

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

Swimming in Santorini in september is pleasant

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

As for Fira, Imerovigli, Kamari, Oia, Akrotiri, Ammoudi, Aspronissi, Exo Gialos Thiras, Finikia, Koloumpos, Megalochori, Monolithos, Néa Kameni, Palia Kameni, Paradisos, Períssa and Thirassía, swimming is pleasant in september. The sea water is 76°F on average (min: 74°F/max: 79°F) so you can easily spend time in the water.

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

ideal swimming

pleasant swimming

cool swimming

cold swimming

freezing swimming

Water temperature and seasonal norms in september

Fira

	August	September	October
Average sea temperature	78°F	76°F	73°F
Minimum sea temperature	75°F	74°F	68°F
Maximum sea temperature	82°F	79°F	77°F
Average outside temperature	79°F	77°F	72°F
Maximum outside temperature	81°F	77°F	72°F
Minimum outside temperature	79°F	76°F	70°F
Precipitation	0.2in	0.7in	2in
Number of days of precipitation	0 jour(s) (1%)	1 jour(s) (4%)	3 jour(s) (11%)
Cloud cover	3%	9%	19%
Our opinion	pleasant swimming	pleasant swimming	pleasant swimming

More information on swimming in Fira in september

Imerovigli

	August	September	October
Average sea temperature	78°F	77°F	73°F
Minimum sea temperature	75°F	74°F	68°F
Maximum sea temperature	82°F	79°F	76°F
Average outside temperature	79°F	77°F	72°F
Maximum outside temperature	81°F	77°F	72°F
Minimum outside temperature	79°F	76°F	70°F
Precipitation	0.2in	0.7in	2in
Number of days of precipitation	0 jour(s) (1%)	1 jour(s) (4%)	3 jour(s) (11%)
Cloud cover	3%	9%	19%
Our opinion	pleasant swimming	pleasant swimming	pleasant swimming

More information on swimming in Imerovigli in september

Kamari

	August	September	October
Average sea temperature	79°F	76°F	72°F
Minimum sea temperature	75°F	75°F	68°F
Maximum sea temperature	82°F	79°F	76°F
Average outside temperature	79°F	77°F	72°F
Maximum outside temperature	81°F	77°F	72°F
Minimum outside temperature	79°F	76°F	70°F
Precipitation	0.2in	0.7in	2in
Number of days of precipitation	0 jour(s) (1%)	1 jour(s) (4%)	3 jour(s) (11%)
Cloud cover	3%	9%	19%
Our opinion	pleasant swimming	pleasant swimming	pleasant swimming

More information on swimming in Kamari in september

Oia

	August	September	October
Average sea temperature	79°F	76°F	73°F
Minimum sea temperature	75°F	74°F	68°F
Maximum sea temperature	82°F	79°F	77°F
Average outside temperature	79°F	77°F	72°F
Maximum outside temperature	81°F	77°F	72°F
Minimum outside temperature	79°F	76°F	70°F
Precipitation	0.2in	0.7in	2in
Number of days of precipitation	0 jour(s) (1%)	1 jour(s) (4%)	3 jour(s) (11%)
Cloud cover	3%	9%	19%
Our opinion	pleasant swimming	pleasant swimming	pleasant swimming

More information on swimming in Oia in september

Akrotiri

	August	September	October
Average sea temperature	79°F	77°F	72°F
Minimum sea temperature	75°F	74°F	68°F
Maximum sea temperature	82°F	79°F	76°F
Average outside temperature	79°F	77°F	72°F
Maximum outside temperature	81°F	77°F	72°F
Minimum outside temperature	79°F	76°F	70°F
Precipitation	0.2in	0.7in	2in
Number of days of precipitation	0 jour(s) (1%)	1 jour(s) (4%)	3 jour(s) (11%)
Cloud cover	3%	9%	19%
Our opinion	pleasant swimming	pleasant swimming	pleasant swimming

List of coastal cities in Santorini

Fira in september	pleasant swimming
Imerovigli in september	pleasant swimming
Kamari in september	pleasant swimming
Oia in september	pleasant swimming
Akrotiri in september	pleasant swimming
Ammoudi in september	pleasant swimming
Aspronissi in september	pleasant swimming
Exo Gialos Thiras in september	pleasant swimming
Finikia in september	pleasant swimming
Koloumpos in september	pleasant swimming
Megalochori in september	pleasant swimming
Monolithos in september	pleasant swimming
Néa Kameni in september	pleasant swimming
Palia Kameni in september	pleasant swimming
Paradisos in september	pleasant swimming
Períssa in september	pleasant swimming
Thirassía in september	pleasant swimming