World Resorts Slovenia Strunjan Weather

Strunjan Sea Temperature in December

Average sea water temperature in December:
+55.5°F
Minimum sea water temperature in December: 60.4°F
Maximum sea water temperature in December: 50.4°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 56.7°F. The highest and lowest sea temperatures during the month were 57.6°F and 55.4°F.

Monthly sea water temperature in Strunjan, °F

Which Slovenia resorts have warmest sea in December?

Place name December 2025 December 2024
Portoroz 56.9°F 56.5°F
Piran 56.9°F 56.5°F
Strunjan 56.7°F 56.2°F
Isola 56.4°F 55.9°F
Dolenjske Toplice 56.3°F 57.1°F
Koper 56.1°F 55.7°F
Cerkno 54.5°F 54.0°F
Bohinjsko Jezero 54.3°F 53.8°F

Best time for vacation in Strunjan

Sunniest months:
August 23 days
July 21 days
June 20 days
Warmest months:
August 85.1 °F
July 84.9 °F
June 80.3 °F
Warmest sea temp:
August 78.6 °F
July 78.3 °F
September 74.1 °F
Coldest months:
January 45.6 °F
December 47.7 °F
February 48.3 °F
Rainiest months:
May 7 days
November 6 days
September 6 days
Windiest months:
February 6.5 mph
March 6.4 mph
November 6.1 mph

Strunjan on a weather map

Current weather
21:27
Strunjan
+45°F
W 5 mph
Feels like: +41°F
Precip.: 0%
Places in Slovenia:
Name
°F
Bohinjsko Jezero
+37°F
Dolenjske Toplice
+36°F
Zrece
+39°F
Isola
+45°F
Koper
+45°F
Kranjska Gora
+37°F
Ljubljana
+41°F
Maribor
+41°F
Moravske Toplice
+37°F
Piran
+45°F
Portoroz
+45°F
Rogaska Slatina
+39°F
Strunjan
+45°F
Terme Radenci
+41°F
Cerkno
+45°F
all places
24 Hours Forecast
Strunjan
Local time: 21:27
December 17, wednesday
0000
45°F
W
4 mph
0300
46°F
W
4 mph
0600
45°F
W
4 mph
0900
45°F
W
3 mph
1200
52°F
NW
3 mph
1500
52°F
W
3 mph
1800
52°F
NW
2 mph
2100
46°F
N
3 mph
Units of measurement: °C / °F