#1 in October
18.7°C
NOAA Season Curve (May–Oct):
M
15.7°
J
21.2°
J
24.2°
A
25.2°
S
22.7°
O
18.7°
N
14.4°
NOAA SATELLITE DATA (1991–2020 30-YEAR CLIMATOLOGY)
BGBulgaria Sea Temperature in October
Historical 30-year sea surface temperatures across 48 coastlines in Bulgaria for October. Derived from NOAA 0.25° blended satellite and in-situ marine observations.
Climatology Notice: Temperatures represent the 30-year long-term historical average (1991–2020 normal), not a live single-day sensor forecast.
18.5°C
Bracing / Crispaverage across 48 surveyed coastlines in Bulgaria, October
- Ranges 18.0°C at Rusalka Exotic Cove to 18.7°C at Ahtopol Central Beach.
- None of Bulgaria’s 48 surveyed coastlines reach the 21°C swim threshold in October.
- On the national average, the water is above 21°C from 14 Jun to 26 Sep — about 104 days a year.
- 6.6°C cooler than Bulgaria’s August peak of 25.1°C (see August).
Select Month
View 12-Month Annual Overview →The October Thermal Lag Advantage
Because seawater has a high specific heat capacity, it acts as a massive thermal battery. Southern European and Mediterranean basins absorb solar energy all summer, reaching maximum heat storage by late August. In October, while air temperatures drop, the water releases heat slowly, which creates sea temperatures that are typically 3°C to 5°C warmer than in June.
CYPRUS (AYIA NAPA / PROTARAS)
24.5°C
Effortless swimming
TURKEY (ANTALYA / KAŞ)
24.8°C
Warm bathwater
GREECE (CRETE / RHODES)
23.4°C
Extended season
MALTA & GOZO
23.2°C
Crystal clear
Bulgaria Beaches in October
Individual coordinate lookups from NOAA 0.25° marine grid.
Showing 48 coastlines
Explore Sea Temperatures by Country
Spain(23.6°C)Italy(25.9°C)Turkey(27.3°C)France(22.4°C)Greece(25.4°C)Cyprus(27.7°C)Croatia(25.2°C)Albania(25.5°C)Montenegro(25.7°C)Malta(26.7°C)Bulgaria(25.1°C)Romania(24.7°C)Slovenia(25.4°C)Portugal(20.7°C)Poland(19°C)Sweden(18.3°C)Netherlands(18.5°C)Bosnia & Herzegovina(25.2°C)Monaco(24.6°C)Latvia(18.5°C)Estonia(18°C)Lithuania(18.8°C)Germany(18.6°C)Denmark(18°C)Norway(15.3°C)Belgium(18.7°C)Faroe Islands(10.9°C)United Kingdom(16.1°C)Ireland(15.9°C)Iceland(10.9°C)Finland(16.6°C)
