Measurements:
°C
°F
Rethymno
76°F
S 21 mph
Feels like: 80°F
Precip: 3%
World Resorts Greece Rethymno Weather

Rethymno Sea Water Temperature

Current Sea Water Temperature:
+80.4°F
Maximum Sea Water Temperature in June: 85.4°F
Minimum Sea Water Temperature in June: 70.2°F
Average water temperature in June: 76.9°F

Sea Water Temperature for the Last 10 Days:

June 19 80.4°F June 14 78.4°F
June 18 80.8°F June 13 78.6°F
June 17 80.0°F June 12 79.6°F
June 16 80.0°F June 11 78.8°F
June 15 79.2°F June 10 78.8°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 +78
Bali Gr +72
Chalkidiki +76
Chania +76
Corfu +78
Crete +64
Hanioti +78
Heraklion +74
Hersonissos +74
Paralia Katerini +78
Rhodes +78
Sithonia +78
Thasos +72
Thessaloniki +76
Zakynthos +74
24 Hours Weather Forecast
Rethymno
Local time: 09:38
20 jun, saturday
1200 76°F
S
19 mph
1500 78°F
S
16 mph
1800 76°F
S
12 mph
2100 72°F
S
11 mph
21 jun, sunday
0000 72°F
SE
5 mph
0300 72°F
SE
8 mph
0600 72°F
SE
9 mph
0900 78°F
S
14 mph