Black Sea water temperature — Silistar Beach, Bulgaria
A secluded bay between Sinemorets and Rezovo, inside the protected Strandzha Nature Park. Its crescent of fine sand is framed by rocky headlands and dense oak forest, and the Silistar river reaches the sea at the southern end. With no hotels on the beach and very clear water, it is one of the wildest and most beautiful spots on the Bulgarian coast.
The sea water temperature in Silistar Beach, Bulgaria is 19.7°C (measured Oct 21, 2026). That matches the 3-year average for this date.
Zoom or select a range below to explore historical data.
Based on daily readings from Jan 1, 2023 to Oct 21, 2026.
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 10.3°C | 8.1°C | 12.2°C |
| February | 8.0°C | 6.2°C | 9.4°C |
| March | 8.2°C | 5.8°C | 10.7°C |
| April | 11.4°C | 8.8°C | 15.2°C |
| May | 15.4°C | 11.0°C | 20.2°C |
| June | 22.6°C | 18.1°C | 25.8°C |
| July | 25.7°C | 23.2°C | 28.5°C |
| August | 25.9°C | 24.1°C | 27.8°C |
| September | 24.1°C | 21.4°C | 26.5°C |
| October | 20.5°C | 17.7°C | 23.1°C |
| November | 16.7°C | 12.8°C | 20.2°C |
| December | 12.4°C | 10.0°C | 16.0°C |
The sea water temperature in Silistar Beach, Bulgaria is 19.7°C (measured Oct 21, 2026). That matches the 3-year average for this date.
The warmest month is August, with an average water temperature of 25.9°C. The highest reading on record is 28.5°C (Jul 22, 2024).
The sea averages 20°C or more from June to October, which is the main swimming season. August is the warmest month at 25.9°C.
The coldest month is February, averaging 8.0°C. The lowest reading on record is 5.8°C (Mar 4, 2026).