NOAA SATELLITE DATA (1991–2020 30-YEAR CLIMATOLOGY)

Romania Sea Temperature in October

Historical 30-year sea surface temperatures across 6 coastlines in Romania 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.

17.7°C

Bracing / Crispaverage across 6 surveyed coastlines in Romania, October

Ranges 17.4°C at Sfântu Gheorghe Beach to 18.0°C at Plaja 2 Mai.
None of Romania’s 6 surveyed coastlines reach the 21°C swim threshold in October.
On the national average, the water is above 21°C from 17 Jun to 21 Sep — about 96 days a year.
7.0°C cooler than Romania’s August peak of 24.7°C (see August).

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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