Measurements:
°C
°F
Symi
56°F
E 24 mph
Feels like: 50°F
Precip: 100%
World Resorts Greece Symi Weather

Symi Sea Water Temperature

Current Sea Water Temperature:
+68.4°F
Maximum Sea Water Temperature in January: 70.8°F
Minimum Sea Water Temperature in January: 63.6°F
Average water temperature in January: 66.8°F

Sea Water Temperature for the Last 10 Days:

January 11 68.4°F January 06 68.8°F
January 10 69.0°F January 05 69.4°F
January 09 68.8°F January 04 68.8°F
January 08 69.2°F January 03 69.4°F
January 07 68.4°F January 02 70.2°F

When is the Warmest Sea for Symi?

According to our data for the last three years for Symi 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 Symi was 82.9°F. The maximum and minimum values were 79.4°F and 86.4°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Symi was 82.4°F. The maximum and minimum values were 80.2°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 Symi was 82.8°F. The maximum and minimum values were 80.0°F and 85.2°F respectively.

Best Time to Visit Symi
The most sunny months:
July 31 days
August 31 days
June 28 days
The most warm months:
August 90.5 °F
July 90.3 °F
September 85.5 °F
Warmest sea temperature:
August 83.8 °F
September 82.3 °F
July 80.5 °F
The most cold months:
January 58.1 °F
February 58.9 °F
March 61.6 °F
The most rainy months:
January 8 days
December 7 days
February 5 days
The most windy months:
January 12 mph
February 12 mph
March 11 mph

Symi on the Weather Map

Greece Resorts:
NAME
Athenes +54
Athos +50
Bali Gr +56
Chalkidiki +50
Chania +54
Corfu +50
Crete +52
Heraklion +52
Kalamata +52
Paralia Katerini +44
Rhodes +54
Santorini +60
Thasos +44
Thessaloniki +40
Zakynthos +52
24 Hours Weather Forecast
Symi
Local time: 16:27
11 jan, sunday
1800 56°F
E
22 mph
2100 56°F
E
19 mph
12 jan, monday
0000 54°F
E
14 mph
0300 54°F
E
13 mph
0600 52°F
SE
8 mph
0900 54°F
SE
11 mph
1200 54°F
E
14 mph
1500 54°F
SE
21 mph