World Resorts Greece Kos Weather

Kos sea water temperature

Current sea water temperature:
+70.5°F
Minimum sea water temperature in December: 71.1°F
Maximum sea water temperature in December: 63.5°F
Average sea water temperature in December: 67.3°F

Sea water temperature for the last 10 days:

December 4 70.5°F November 29 71.1°F
December 3 70.9°F November 28 71.2°F
December 2 71.1°F November 27 70.9°F
December 1 70.9°F November 26 70.2°F
November 30 70.5°F November 25 71.4°F

When is the warmest sea in Kos?

Based on the data about daily sea water temperature for the last three years the warmest sea in Kos was noticed in August, September and July.

Monthly Sea Temperatures in Kos, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 78.5°F. The highest and lowest sea temperatures during the month were 81.0°F and 76.1°F.

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.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 77.1°F. The highest and lowest sea temperatures during the month were 79.3°F and 73.0°F.

Best time for vacation in Kos

Sunniest months:
July 31 days
August 31 days
June 29 days
Warmest months:
August 83.3 °F
July 82.9 °F
September 79.0 °F
Warmest sea temp:
August 78.2 °F
September 77.1 °F
July 75.9 °F
Coldest months:
January 57.2 °F
February 57.7 °F
March 59.6 °F
Rainiest months:
January 7 days
December 7 days
February 5 days
Windiest months:
January 17.1 mph
February 16.8 mph
July 16.1 mph

Kos on a weather map

Kos
+64°F
NW 39 mph
Feels like: +64°F
Precip.: 100%
Places in Greece:
Name
°F
+59°F
+57°F
+61°F
+61°F
+55°F
+55°F
+63°F
+52°F
+66°F
+61°F
+59°F
+57°F
+54°F
+57°F
24 Hours Forecast
Kos
Local time: 05:54
December 05, friday
0600
64°F
NW
39 mph
0900
64°F
NW
39 mph
1200
64°F
N
30 mph
1500
63°F
NE
22 mph
1800
63°F
N
19 mph
2100
63°F
N
11 mph
December 06, saturday
0000
63°F
N
7 mph
0300
63°F
N
12 mph
Units of measurement: °C / °F