#1 in September
15.8°C
NOAA Season Curve (May–Oct):
M
10.8°
J
15.2°
J
18.1°
A
18.6°
S
15.8°
O
11.9°
N
8.2°
NOAA SATELLITE DATA (1991–2020 30-YEAR CLIMATOLOGY)
NONorway Sea Temperature in September
Historical 30-year sea surface temperatures across 32 coastlines in Norway for September. 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.
13.5°C
Bracing / Crispaverage across 32 surveyed coastlines in Norway, September
- Ranges 10.3°C at Ersfjord Beach to 15.8°C at Hoddevik Surf Beach.
- No coastline in Norway reaches 21°C in any month — this is wetsuit or cold-water swimming.
- 1.8°C cooler than Norway’s August peak of 15.3°C (see August).
Select Month
View 12-Month Annual Overview →North Atlantic Drift (Gulf Stream) Thermal Anomaly
Lofoten and northern Norway sit above 68°N latitude (equal to northern Alaska and Greenland), yet their summer waters reach 11.5–13.0°C rather than freezing. This is powered entirely by the Norwegian Atlantic Current branch of the North Atlantic Drift transporting warm equatorial water northeastward across the Atlantic.
Oceanographic Phenomenon:High-Latitude Maritime Heat Transport
Thermal Lag Characteristic:Sub-polar thermal lag: water temperatures peak late in August (12.4°C at Uttakleiv Beach) and drop sharply to 5–6°C during Arctic winter polar nights.
Peak Bathing Average:August (12.4°C)
Statutory Tourism Sources:
visitnorway.comfjordnorway.comvisitoslo.comen.visitnorway.comregionstavanger-ryfylke.comThe September 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 September, 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)
27.5°C
Effortless swimming
TURKEY (ANTALYA / KAŞ)
27.3°C
Warm bathwater
GREECE (CRETE / RHODES)
25.4°C
Extended season
MALTA & GOZO
26.1°C
Crystal clear
Norway Beaches in September
Individual coordinate lookups from NOAA 0.25° marine grid.
Showing 32 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)
