Measurements:
°C
°F
Eretria
68°F
S 24 mph
Feels like: 68°F
Precip: 3%
World Resorts Greece Eretria Weather

Eretria Sea Water Temperature

Current Sea Water Temperature:
+75.4°F
Maximum Sea Water Temperature in October: 80.0°F
Minimum Sea Water Temperature in October: 68.2°F
Average water temperature in October: 75.1°F

Sea Water Temperature for the Last 10 Days:

October 04 75.4°F September 29 77.0°F
October 03 76.2°F September 28 77.8°F
October 02 76.6°F September 27 78.0°F
October 01 76.6°F September 26 78.4°F
September 30 76.8°F September 25 78.8°F

When is the Warmest Sea for Eretria?

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

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 Eretria was 82.9°F. The maximum and minimum values were 81.2°F and 84.0°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Eretria was 82.6°F. The maximum and minimum values were 79.0°F and 84.8°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Eretria was 80.9°F. The maximum and minimum values were 76.8°F and 84.2°F respectively.

Best Time to Visit Eretria
The most sunny months:
July 29 days
August 29 days
June 26 days
The most warm months:
July 93.8 °F
August 92.5 °F
June 87.6 °F
Warmest sea temperature:
August 83.1 °F
July 82.1 °F
September 80.5 °F
The most cold months:
January 53.5 °F
February 56.1 °F
December 57.2 °F
The most rainy months:
February 4 days
December 4 days
January 3 days
The most windy months:
August 8 mph
February 7 mph
January 7 mph

Eretria on the Weather Map

Greece Resorts:
NAME
F°
Athenes +70
Bali Gr +66
Chalkidiki +68
Chania +66
Corfu +70
Crete +58
Hanioti +70
Paralia Katerini +72
Pefkochori +70
Possidi +70
Rhodes +70
Sithonia +70
Thasos +64
Thessaloniki +72
Zakynthos +70
24 Hours Weather Forecast
Eretria
Local time: 12:11
04 oct, sunday
1500 68°F
S
21 mph
1800 68°F
S
16 mph
2100 66°F
SE
7 mph
05 oct, monday
0000 64°F
SE
7 mph
0300 62°F
SE
7 mph
0600 62°F
SE
7 mph
0900 66°F
SE
7 mph
1200 72°F
S
12 mph