#1 in April
13.1°C
NOAA Season Curve (May–Oct):
M
17.9°
J
22.5°
J
25.0°
A
25.4°
S
22.6°
O
19.3°
N
16.2°
NOAA SATELLITE DATA (1991–2020 30-YEAR CLIMATOLOGY)
SISlovenia Sea Temperature in April
Historical 30-year sea surface temperatures across 4 coastlines in Slovenia for April. 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.
13.1°C
Bracing / Crispaverage across 4 surveyed coastlines in Slovenia, April
- Ranges 13.1°C at Fiesa Beach to 13.1°C at Strunjan Beach.
- None of Slovenia’s 4 surveyed coastlines reach the 21°C swim threshold in April.
- On the national average, the water is above 21°C from 5 Jun to 30 Sep — about 117 days a year.
- 12.3°C cooler than Slovenia’s August peak of 25.4°C (see August).
Select Month
View 12-Month Annual Overview →Slovenia Beaches in April
Individual coordinate lookups from NOAA 0.25° marine grid.
Showing 4 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)
