Measurements:
°C
°F
Thessaloniki
66°F
N 12 mph
Feels like: 66°F
Precip: 0%
World Resorts Greece Thessaloniki Weather

Thessaloniki Sea Water Temperature

Current Sea Water Temperature:
+69.2°F
Maximum Sea Water Temperature in May: 77.8°F
Minimum Sea Water Temperature in May: 60.8°F
Average water temperature in May: 69.4°F

Sea Water Temperature for the Last 10 Days:

May 14 69.2°F May 09 65.6°F
May 13 68.8°F May 08 65.4°F
May 12 67.4°F May 07 65.8°F
May 11 66.6°F May 06 65.2°F
May 10 67.0°F May 05 63.2°F

When is the Warmest Sea for Thessaloniki?

According to our data for the last three years for Thessaloniki 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 Thessaloniki was 85.0°F. The maximum and minimum values were 83.2°F and 86.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Thessaloniki was 84.8°F. The maximum and minimum values were 81.6°F and 88.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Thessaloniki was 81.7°F. The maximum and minimum values were 78.6°F and 84.0°F respectively.

Best Time to Visit Thessaloniki
The most sunny months:
July 28 days
August 26 days
September 24 days
The most warm months:
July 95.5 °F
August 94.8 °F
June 88.5 °F
Warmest sea temperature:
August 84.8 °F
July 83.3 °F
September 80.7 °F
The most cold months:
January 47.4 °F
December 50.9 °F
February 52.4 °F
The most rainy months:
May 3 days
November 3 days
March 3 days
The most windy months:
July 6 mph
June 6 mph
May 6 mph

Thessaloniki on the Weather Map

Greece Resorts:
NAME
Athenes +72
Athos +62
Bali Gr +72
Chalkidiki +60
Chania +72
Corfu +68
Crete +64
Heraklion +72
Kassandra +62
Paralia Katerini +64
Rhodes +70
Santorini +68
Thasos +58
Thessaloniki +66
Zakynthos +64
24 Hours Weather Forecast
Thessaloniki
Local time: 16:44
14 may, thursday
1800 66°F
N
12 mph
2100 60°F
N
8 mph
15 may, friday
0000 58°F
NW
5 mph
0300 58°F
W
3 mph
0600 58°F
N
1 mph
0900 60°F
NE
2 mph
1200 68°F
NE
6 mph
1500 72°F
NE
7 mph