World Resorts Greece Kos Weather

Kos sea water temperature

Current sea water temperature:
+67.3°F
Minimum sea water temperature in January: 68.2°F
Maximum sea water temperature in January: 61.7°F
Average sea water temperature in January: 64.6°F

Sea water temperature for the last 10 days:

January 2 67.3°F December 28 68.7°F
January 1 68.0°F December 27 68.9°F
December 31 67.8°F December 26 68.7°F
December 30 68.2°F December 25 68.9°F
December 29 68.2°F December 24 68.7°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 6 days
February 5 days
Windiest months:
January 17.1 mph
February 16.8 mph
July 16.1 mph

Kos on a weather map

Kos
+48°F
S 4 mph
Feels like: +48°F
Precip.: 0%
Places in Greece:
Name
°F
+50°F
+50°F
+54°F
+52°F
+52°F
+52°F
+52°F
+54°F
+50°F
+45°F
+54°F
+45°F
+48°F
+55°F
+54°F
24 Hours Forecast
Kos
Local time: 14:12
January 02, friday
1500
48°F
S
4 mph
1800
50°F
NW
2 mph
2100
54°F
N
7 mph
January 03, saturday
0000
55°F
N
12 mph
0300
55°F
N
16 mph
0600
57°F
NW
22 mph
0900
59°F
N
21 mph
1200
61°F
N
24 mph
Units of measurement: °C / °F