Measurements:
°C
°F
Heraklion
56°F
NE 8 mph
Feels like: 54°F
Precip: 0%
World Resorts Greece Heraklion Weather

Heraklion Sea Water Temperature

Current Sea Water Temperature:
+64.0°F
Maximum Sea Water Temperature in January: 67.0°F
Minimum Sea Water Temperature in January: 60.8°F
Average water temperature in January: 63.5°F

Sea Water Temperature for the Last 10 Days:

January 29 64.0°F January 24 63.4°F
January 28 63.6°F January 23 64.0°F
January 27 64.0°F January 22 63.8°F
January 26 63.8°F January 21 63.6°F
January 25 63.4°F January 20 63.6°F

When is the Warmest Sea for Heraklion?

According to our data for the last three years for Heraklion 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: 2025 2024 2023

The average sea surface temperature in August 2025 for Heraklion was 82.7°F. The maximum and minimum values were 81.8°F and 83.6°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Heraklion was 82.2°F. The maximum and minimum values were 79.8°F and 85.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Heraklion was 81.0°F. The maximum and minimum values were 77.6°F and 82.8°F respectively.

Best Time to Visit Heraklion
The most sunny months:
July 30 days
August 30 days
June 28 days
The most warm months:
July 89.5 °F
August 89.4 °F
September 84.9 °F
Warmest sea temperature:
August 83.0 °F
July 81.6 °F
September 81.1 °F
The most cold months:
January 58.3 °F
February 59.3 °F
December 61.4 °F
The most rainy months:
December 4 days
January 4 days
February 3 days
The most windy months:
January 10 mph
February 10 mph
July 10 mph

Heraklion on the Weather Map

Greece Resorts:
NAME
Athenes +54
Athos +54
Chalkidiki +52
Chania +58
Corfu +54
Crete +54
Heraklion +56
Kalamata +54
Mykonos +60
Paralia Katerini +50
Rhodes +58
Santorini +62
Thasos +50
Thessaloniki +50
Zakynthos +54
24 Hours Weather Forecast
Heraklion
Local time: 08:54
30 jan, friday
0900 56°F
NE
8 mph
1200 62°F
E
7 mph
1500 62°F
E
6 mph
1800 58°F
N
7 mph
2100 58°F
N
8 mph
31 jan, saturday
0000 58°F
N
7 mph
0300 58°F
N
8 mph
0600 54°F
NE
6 mph