World Resorts Greece Kos Weather

Kos Sea Temperature in September

Average sea water temperature in September:
+77.1°F
Minimum sea water temperature in September: 80.4°F
Maximum sea water temperature in September: 71.8°F

Daily sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 76.2°F. The highest and lowest sea temperatures during the month were 77.5°F and 74.7°F.

Monthly sea water temperature in Kos, °F

Which Greece resorts have warmest sea in September?

Place name September 2026 September 2025
Laganas 83.5°F 78.6°F
Kavos 83.4°F 77.7°F
Messonghi 83.4°F 77.7°F
Moraitika 83.4°F 77.7°F
Benitses 83.3°F 77.8°F
Lefkada 83.1°F 78.2°F
Kalamata 83.1°F 79.3°F
Kerkira 83.0°F 77.6°F
Agios Gordis 83.0°F 77.3°F
Skafidia 83.0°F 77.9°F
Zakynthos 83.0°F 78.3°F
Nissaki 82.6°F 76.8°F
Barbati 82.6°F 76.8°F
Dassia 82.5°F 77.2°F
Corfu 82.5°F 76.9°F
Paleokastritsa 82.3°F 75.8°F
Acharavi 82.3°F 76.3°F
Thessaloniki 82.3°F 78.5°F
Sidari 82.1°F 75.7°F
Cephalonia 82.1°F 77.2°F

Best time for vacation in Kos

Sunniest months:
July 31 days
August 31 days
June 29 days
Warmest months:
August 83.0 °F
July 82.7 °F
September 79.0 °F
Warmest sea temp:
August 78.2 °F
September 77.1 °F
July 75.8 °F
Coldest months:
January 57.2 °F
February 57.7 °F
March 59.4 °F
Rainiest months:
January 7 days
December 6 days
February 5 days
Windiest months:
January 17.3 mph
February 16.9 mph
July 16.2 mph

Kos on a weather map

Kos
+73°F
S 14 mph
Feels like: +77°F
Precip.: 14%
Places in Greece:
Name
°F
+70°F
+66°F
+72°F
+75°F
+70°F
+72°F
+73°F
+73°F
+68°F
+73°F
+64°F
+72°F
+73°F
+73°F
24 Hours Forecast
Kos
Local time: 08:07
September 15, tuesday
0900
73°F
S
14 mph
1200
73°F
SE
15 mph
1500
73°F
SE
20 mph
1800
75°F
SE
19 mph
2100
75°F
SE
14 mph
September 16, wednesday
0000
75°F
SE
14 mph
0300
75°F
SE
14 mph
0600
73°F
SE
11 mph
Units of measurement: °C / °F