Measurements:
°C
°F
Heraklion
74°F
SE 6 mph
Feels like: 80°F
Precip: 5%
World Resorts Greece Heraklion Weather

Heraklion Sea Water Temperature

Current Sea Water Temperature:
+82.4°F
Maximum Sea Water Temperature in July: 85.6°F
Minimum Sea Water Temperature in July: 77.0°F
Average water temperature in July: 81.5°F

Sea Water Temperature for the Last 10 Days:

July 13 82.4°F July 08 81.2°F
July 12 82.6°F July 07 81.0°F
July 11 82.4°F July 06 81.0°F
July 10 81.4°F July 05 81.2°F
July 09 81.4°F July 04 80.8°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 59.4 °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 +78
Bali Gr +64
Chalkidiki +78
Chania +76
Corfu +78
Crete +78
Hanioti +78
Heraklion +74
Hersonissos +74
Paralia Katerini +70
Rhodes +78
Sithonia +78
Thasos +74
Thessaloniki +70
Zakynthos +80
24 Hours Weather Forecast
Heraklion
Local time: 07:10
14 jul, tuesday
0900 84°F
SE
11 mph
1200 86°F
S
14 mph
1500 86°F
SE
15 mph
1800 84°F
SE
15 mph
2100 76°F
SE
10 mph
15 jul, wednesday
0000 74°F
SE
9 mph
0300 76°F
SE
14 mph
0600 74°F
SE
13 mph