Measurements:
°C
°F
Thessaloniki
70°F
S 6 mph
Feels like: 70°F
Precip: 2%
World Resorts Greece Thessaloniki Weather

Thessaloniki Sea Water Temperature

Current Sea Water Temperature:
+83.0°F
Maximum Sea Water Temperature in July: 90.8°F
Minimum Sea Water Temperature in July: 75.8°F
Average water temperature in July: 83.3°F

Sea Water Temperature for the Last 10 Days:

July 13 83.0°F July 08 82.2°F
July 12 82.6°F July 07 81.8°F
July 11 82.0°F July 06 81.4°F
July 10 82.2°F July 05 83.2°F
July 09 82.4°F July 04 84.6°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 88.4 °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
April 6 mph
May 6 mph

Thessaloniki 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
Thessaloniki
Local time: 07:20
14 jul, tuesday
0900 80°F
S
8 mph
1200 90°F
S
9 mph
1500 96°F
SE
7 mph
1800 92°F
N
14 mph
2100 80°F
N
8 mph
15 jul, wednesday
0000 76°F
W
1 mph
0300 74°F
S
4 mph
0600 74°F
S
4 mph