Measurements:
°C
°F
Santorini
74°F
NE 15 mph
Feels like: 74°F
Precip: 4%
World Resorts Greece Santorini Weather

Santorini Sea Water Temperature

Current Sea Water Temperature:
+73.4°F
Maximum Sea Water Temperature in June: 80.8°F
Minimum Sea Water Temperature in June: 69.6°F
Average water temperature in June: 75.3°F

Sea Water Temperature for the Last 10 Days:

June 03 73.4°F May 28 70.4°F
June 01 72.2°F May 27 69.8°F
May 31 71.6°F May 26 69.2°F
May 30 71.6°F May 25 69.0°F
May 29 71.2°F May 24 69.0°F

When is the Warmest Sea for Santorini?

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

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 Santorini was 81.0°F. The maximum and minimum values were 79.0°F and 82.4°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Santorini was 78.7°F. The maximum and minimum values were 76.6°F and 80.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Santorini was 78.7°F. The maximum and minimum values were 74.0°F and 82.8°F respectively.

Best Time to Visit Santorini
The most sunny months:
July 31 days
August 30 days
June 29 days
The most warm months:
August 85.2 °F
July 84.2 °F
September 81.3 °F
Warmest sea temperature:
August 80.4 °F
September 79.3 °F
July 78.7 °F
The most cold months:
January 59.1 °F
February 59.4 °F
March 60.8 °F
The most rainy months:
January 4 days
December 3 days
February 3 days
The most windy months:
January 17 mph
February 17 mph
March 16 mph

Santorini on the Weather Map

Greece Resorts:
NAME
Athenes +84
Bali Gr +80
Chalkidiki +76
Chania +80
Corfu +74
Crete +70
Hanioti +82
Heraklion +78
Hersonissos +78
Kassandra +78
Paralia Katerini +82
Rhodes +78
Thasos +72
Thessaloniki +84
Zakynthos +74
24 Hours Weather Forecast
Santorini
Local time: 18:08
03 jun, wednesday
2100 74°F
NE
16 mph
04 jun, thursday
0000 74°F
NE
17 mph
0300 74°F
NE
19 mph
0600 72°F
NE
18 mph
0900 74°F
NE
17 mph
1200 74°F
NE
17 mph
1500 74°F
NE
15 mph
1800 74°F
NE
13 mph