Measurements:
°C
°F
St Constantine and Helena
48°F
W 6 mph
Feels like: 46°F
Precip: 85%
World Resorts Bulgaria St Constantine and Helena Weather

St Constantine and Helena Sea Water Temperature

Current Sea Water Temperature:
+53.8°F
Maximum Sea Water Temperature in April: 63.0°F
Minimum Sea Water Temperature in April: 42.2°F
Average water temperature in April: 50.0°F

Sea Water Temperature for the Last 10 Days:

April 21 53.8°F April 16 50.6°F
April 20 53.0°F April 15 50.8°F
April 19 53.0°F April 14 50.2°F
April 18 52.6°F April 13 49.4°F
April 17 52.0°F April 12 49.6°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 41.0 °F
February 43.9 °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
Albena +48
Bansko +40
Burgas +50
Elenite +50
Golden Sands +48
Nesebr +50
Obzor +50
Pomorie +50
Ravda +50
Sarafovo +50
Sofia +42
Sozopol +50
Sunny Beach +50
Sveti Vlas +50
Varna +48
24 Hours Weather Forecast
St Constantine and Helena
Local time: 08:33
22 apr, wednesday
0900 48°F
W
6 mph
1200 52°F
NW
7 mph
1500 52°F
NW
8 mph
1800 52°F
N
7 mph
2100 46°F
N
2 mph
23 apr, thursday
0000 44°F
NE
2 mph
0300 40°F
SE
4 mph
0600 40°F
SE
5 mph

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