World Resorts Greece Kos Weather

Kos sea water temperature

Current sea water temperature:
+64.4°F
Minimum sea water temperature in April: 67.8°F
Maximum sea water temperature in April: 60.1°F
Average sea water temperature in April: 63.5°F

Sea water temperature for the last 10 days:

April 26 64.4°F April 21 64.0°F
April 25 64.6°F April 20 63.9°F
April 24 63.9°F April 19 63.7°F
April 23 64.6°F April 18 63.3°F
April 22 64.2°F April 17 64.0°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 59.4 °F
Rainiest months:
January 7 days
December 6 days
February 5 days
Windiest months:
January 17.3 mph
February 16.9 mph
July 16.1 mph

Kos on a weather map

Kos
+66°F
SW 4 mph
Feels like: +66°F
Precip.: 0%
Places in Greece:
Name
°F
+63°F
+63°F
+50°F
+59°F
+57°F
+64°F
+63°F
+63°F
+64°F
+63°F
+64°F
+66°F
+63°F
+59°F
24 Hours Forecast
Kos
Local time: 19:46
April 26, sunday
2100
66°F
SW
4 mph
April 27, monday
0000
64°F
SE
11 mph
0300
63°F
SE
16 mph
0600
63°F
SE
15 mph
0900
63°F
S
14 mph
1200
66°F
S
14 mph
1500
68°F
SE
17 mph
1800
68°F
SE
17 mph
Units of measurement: °C / °F