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Sea temperature in Bulgaria in September
23°Cwarm · monthly average
The sea around Bulgaria averages 23°C in September. Warm enough for relaxed swimming with no wetsuit needed.
Monthly sea temperatures across the year
Best swim months
Jun, Jul, Aug, Sep
Warmest month
August (26°C)
Coolest month
February (8°C)
Best beaches in Bulgaria
Bulgarian Coast
Sunny Beach
Bulgaria's huge eight-km resort beach.
Bulgarian Coast
Golden Sands
Famed Bulgarian gold-sand resort beach.
Bulgarian Coast
Sozopol
Old-town sandy beach on the southern coast.
Bulgarian Coast
Albena
Five-km curved family beach.
Burgas
Sunny Beach
Black Sea swimming beach near Sunny Beach.
Burgas
Nessebar South Beach
Black Sea swimming beach near Nessebar.
Burgas
Pomorie Beach
Black Sea swimming beach near Pomorie.
Burgas
Sozopol Harmanite
Black Sea swimming beach near Sozopol.
Burgas
Sozopol Central
Black Sea swimming beach near Sozopol.