Measurements:
°C
°F
St Constantine and Helena
64°F
SE 13 mph
Feels like: 64°F
Precip: 0%
World Resorts Bulgaria St Constantine and Helena Weather

St Constantine and Helena Sea Water Temperature

Current Sea Water Temperature:
+59.8°F
Maximum Sea Water Temperature in May: 72.0°F
Minimum Sea Water Temperature in May: 51.0°F
Average water temperature in May: 61.8°F

Sea Water Temperature for the Last 10 Days:

May 13 59.8°F May 08 55.4°F
May 12 59.8°F May 07 55.6°F
May 11 58.6°F May 06 54.8°F
May 10 57.2°F May 05 54.2°F
May 09 56.4°F May 04 54.0°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 +64
Bansko +48
Burgas +62
Elenite +64
Golden Sands +64
Kranevo +64
Nesebr +62
Obzor +64
Pomorie +62
Ravda +62
Sofia +58
Sozopol +62
Sunny Beach +64
Sveti Vlas +64
Varna +64
24 Hours Weather Forecast
St Constantine and Helena
Local time: 16:57
13 may, wednesday
1800 64°F
SE
13 mph
2100 58°F
SE
9 mph
14 may, thursday
0000 52°F
SE
6 mph
0300 50°F
SE
7 mph
0600 52°F
SE
11 mph
0900 52°F
S
11 mph
1200 56°F
S
13 mph
1500 54°F
S
9 mph

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