Measurements:
°C
°F
Rethymno
58°F
NW 2 mph
Feels like: 58°F
Precip: 0%
World Resorts Greece Rethymno Weather

Rethymno Sea Water Temperature

Current Sea Water Temperature:
+62.8°F
Maximum Sea Water Temperature in March: 65.2°F
Minimum Sea Water Temperature in March: 58.2°F
Average water temperature in March: 62.1°F

Sea Water Temperature for the Last 10 Days:

March 31 62.8°F March 26 62.4°F
March 30 62.8°F March 25 63.0°F
March 29 62.8°F March 24 62.8°F
March 28 62.6°F March 23 63.4°F
March 27 62.8°F March 22 63.6°F

When is the Warmest Sea for Rethymno?

According to our data for the last three years for Rethymno 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 Rethymno was 83.4°F. The maximum and minimum values were 81.8°F and 84.8°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Rethymno was 83.1°F. The maximum and minimum values were 79.8°F and 86.8°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Rethymno was 81.6°F. The maximum and minimum values were 78.6°F and 83.4°F respectively.

Best Time to Visit Rethymno
The most sunny months:
July 30 days
August 30 days
June 28 days
The most warm months:
August 89.0 °F
July 88.9 °F
September 84.8 °F
Warmest sea temperature:
August 83.6 °F
July 82.2 °F
September 81.6 °F
The most cold months:
January 59.0 °F
February 59.7 °F
March 62.4 °F
The most rainy months:
January 4 days
December 4 days
February 3 days
The most windy months:
January 10 mph
February 10 mph
March 9 mph

Rethymno on the Weather Map

Greece Resorts:
NAME
Athenes +58
Athos +56
Chalkidiki +56
Chania +54
Corfu +56
Crete +48
Heraklion +54
Kassandra +58
Mykonos +58
Paralia Katerini +52
Rhodes +56
Santorini +62
Thasos +52
Thessaloniki +52
Zakynthos +54
24 Hours Weather Forecast
Rethymno
Local time: 20:14
31 mar, tuesday
2100 58°F
NW
2 mph
01 apr, wednesday
0000 54°F
NW
8 mph
0300 56°F
N
7 mph
0600 56°F
N
2 mph
0900 60°F
NW
7 mph
1200 68°F
W
17 mph
1500 68°F
NW
16 mph
1800 68°F
N
22 mph