Measurements:
°C
°F
St Constantine and Helena
46°F
W 5 mph
Feels like: 44°F
Precip: 100%
World Resorts Bulgaria St Constantine and Helena Weather

St Constantine and Helena Sea Water Temperature

Current Sea Water Temperature:
+43.2°F
Maximum Sea Water Temperature in January: 51.6°F
Minimum Sea Water Temperature in January: 36.8°F
Average water temperature in January: 44.6°F

Sea Water Temperature for the Last 10 Days:

January 29 43.2°F January 24 42.8°F
January 28 43.2°F January 23 43.4°F
January 27 44.0°F January 22 42.8°F
January 26 43.8°F January 21 43.0°F
January 25 43.4°F January 20 43.8°F

When is the Warmest Sea for St Constantine and Helena?

According to our data for the last three years for St Constantine and Helena 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 St Constantine and Helena was 81.4°F. The maximum and minimum values were 79.4°F and 83.2°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for St Constantine and Helena was 79.9°F. The maximum and minimum values were 75.6°F and 84.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for St Constantine and Helena was 77.4°F. The maximum and minimum values were 72.0°F and 80.4°F respectively.

Best Time to Visit St Constantine and Helena
The most sunny months:
August 27 days
July 25 days
September 22 days
The most warm months:
August 86.8 °F
July 86.2 °F
June 79.6 °F
Warmest sea temperature:
August 81.2 °F
July 79.8 °F
September 76.6 °F
The most cold months:
January 41.1 °F
February 44.0 °F
December 45.8 °F
The most rainy months:
June 4 days
May 4 days
January 3 days
The most windy months:
February 11 mph
January 11 mph
December 11 mph

St Constantine and Helena on the Weather Map

Bulgaria Resorts:
NAME
Bansko +38
Burgas +50
Byala +46
Chernomorets +50
Elenite +46
Golden Sands +46
Nesebr +46
Obzor +46
Pomorie +46
Ravda +46
Sarafovo +50
Sofia +38
Sunny Beach +46
Sveti Vlas +46
Varna +46
24 Hours Weather Forecast
St Constantine and Helena
Local time: 03:10
30 jan, friday
0600 46°F
W
6 mph
0900 46°F
S
5 mph
1200 40°F
SE
22 mph
1500 38°F
SE
24 mph
1800 38°F
SE
22 mph
2100 38°F
SE
17 mph
31 jan, saturday
0000 36°F
SE
11 mph
0300 36°F
SE
6 mph

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