Swimming on the island of Kos in september 2025 Sea temperature by city in september
Do you want to go to the beach on the island of Kos 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 on the island of Kos by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature on the island of Kos in september 2025
Here, find the average sea temperature on the island of Kos in september in several coastal cities.
77°F
min: 74°F / max: 81°F
77°F
min: 74°F / max: 81°F
77°F
min: 74°F / max: 81°F
77°F
min: 74°F / max: 81°F
77°F
min: 74°F / max: 81°F
Where should you go swimming on the island of Kos in the month of september?
Swimming on the island of Kos in september is pleasant
In september on the island of Kos swimming conditions are generally the same everywhere.
As for Kardamaina, Agios Fokas, Kefalos, Mastichari and Tigaki, swimming is pleasant in september. The sea water is 77°F on average (min: 74°F/max: 81°F) so you can easily spend time in the water.
Where to go swimming on the island of Kos in september: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in september
Kardamaina
| September | |||
| Average sea temperature | 77°F | ||
| Minimum sea temperature | 74°F | ||
| Maximum sea temperature | 81°F | ||
| Average outside temperature | 77°F | ||
| Maximum outside temperature | 79°F | ||
| Minimum outside temperature | 76°F | ||
| Precipitation | 1.2in | ||
| Number of days of precipitation | 2 jour(s) (6%) | ||
| Cloud cover | 7% | ||
| Our opinion | pleasant swimming |
More information on swimming in Kardamaina in september
Agios Fokas
| September | |||
| Average sea temperature | 77°F | ||
| Minimum sea temperature | 74°F | ||
| Maximum sea temperature | 81°F | ||
| Average outside temperature | 79°F | ||
| Maximum outside temperature | 81°F | ||
| Minimum outside temperature | 76°F | ||
| Precipitation | 0.7in | ||
| Number of days of precipitation | 1 jour(s) (3%) | ||
| Cloud cover | 7% | ||
| Our opinion | pleasant swimming |
More information on swimming in Agios Fokas in september
Kefalos
| September | |||
| Average sea temperature | 77°F | ||
| Minimum sea temperature | 74°F | ||
| Maximum sea temperature | 81°F | ||
| Average outside temperature | 77°F | ||
| Maximum outside temperature | 79°F | ||
| Minimum outside temperature | 76°F | ||
| Precipitation | 1.2in | ||
| Number of days of precipitation | 2 jour(s) (6%) | ||
| Cloud cover | 7% | ||
| Our opinion | pleasant swimming |
More information on swimming in Kefalos in september
Mastichari
| September | |||
| Average sea temperature | 77°F | ||
| Minimum sea temperature | 74°F | ||
| Maximum sea temperature | 81°F | ||
| Average outside temperature | 77°F | ||
| Maximum outside temperature | 79°F | ||
| Minimum outside temperature | 76°F | ||
| Precipitation | 1.2in | ||
| Number of days of precipitation | 2 jour(s) (6%) | ||
| Cloud cover | 7% | ||
| Our opinion | pleasant swimming |
More information on swimming in Mastichari in september
Tigaki
| September | |||
| Average sea temperature | 77°F | ||
| Minimum sea temperature | 74°F | ||
| Maximum sea temperature | 81°F | ||
| Average outside temperature | 77°F | ||
| Maximum outside temperature | 79°F | ||
| Minimum outside temperature | 76°F | ||
| Precipitation | 1.2in | ||
| Number of days of precipitation | 2 jour(s) (6%) | ||
| Cloud cover | 7% | ||
| Our opinion | pleasant swimming |
More information on swimming in Tigaki in september
List of coastal cities on the island of Kos
| Kardamaina in september | pleasant swimming |
| Agios Fokas in september | pleasant swimming |
| Kefalos in september | pleasant swimming |
| Mastichari in september | pleasant swimming |
| Tigaki in september | pleasant swimming |