Measurements:
°C
°F
Cephalonia
84°F
E 7 mph
Feels like: 86°F
Precip: 2%
World Resorts Greece Cephalonia Weather

Cephalonia Sea Water Temperature

Current Sea Water Temperature:
+83.8°F
Maximum Sea Water Temperature in August: 88.2°F
Minimum Sea Water Temperature in August: 78.6°F
Average water temperature in August: 83.1°F

Sea Water Temperature for the Last 10 Days:

August 18 83.8°F August 13 85.4°F
August 17 83.2°F August 12 85.0°F
August 16 83.4°F August 11 85.8°F
August 15 84.4°F August 10 85.6°F
August 14 84.8°F August 09 85.0°F

When is the Warmest Sea for Cephalonia?

According to our data for the last three years for Cephalonia the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Cephalonia was 83.6°F. The maximum and minimum values were 81.2°F and 85.8°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Cephalonia was 80.2°F. The maximum and minimum values were 78.8°F and 81.6°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Cephalonia was 82.7°F. The maximum and minimum values were 80.4°F and 85.2°F respectively.

Best Time to Visit Cephalonia
The most sunny months:
July 30 days
August 29 days
June 26 days
The most warm months:
August 89.1 °F
July 87.9 °F
September 82.9 °F
Warmest sea temperature:
August 83.2 °F
September 81.2 °F
July 81.0 °F
The most cold months:
January 56.8 °F
February 57.5 °F
March 59.7 °F
The most rainy months:
January 7 days
November 7 days
December 7 days
The most windy months:
January 12 mph
February 11 mph
December 10 mph

Cephalonia on the Weather Map

Greece Resorts:
NAME
Athenes +94
Bali Gr +86
Chalkidiki +84
Chania +88
Corfu +84
Crete +90
Hanioti +92
Hersonissos +84
Paralia Katerini +92
Pefkochori +92
Rhodes +88
Sithonia +88
Thasos +82
Thessaloniki +100
Zakynthos +84
24 Hours Weather Forecast
Cephalonia
Local time: 13:39
18 aug, tuesday
1500 84°F
E
7 mph
1800 80°F
E
9 mph
2100 78°F
E
3 mph
19 aug, wednesday
0000 78°F
S
3 mph
0300 76°F
W
2 mph
0600 76°F
S
4 mph
0900 76°F
SW
3 mph
1200 84°F
SE
5 mph