World Resorts Slovenia Portoroz Weather

Portoroz Sea Temperature in January

Average sea water temperature in January:
+51.3°F
Minimum sea water temperature in January: 55.4°F
Maximum sea water temperature in January: 46.9°F

Daily sea water temperature in January, °F

Show year:
2026
2025
2024

The average sea water temperature in January of 2026 was 51.4°F. The highest and lowest sea temperatures during the month were 54.5°F and 48.6°F.

Monthly sea water temperature in Portoroz, °F

Which Slovenia resorts have warmest sea in January?

Place name January 2026 January 2025
Dolenjske Toplice 53.6°F 53.3°F
Portoroz 51.4°F 51.6°F
Piran 51.4°F 51.6°F
Strunjan 51.0°F 51.1°F
Isola 50.7°F 50.6°F
Koper 50.5°F 50.2°F
Cerkno 49.3°F 49.3°F
Bohinjsko Jezero 49.2°F 49.3°F

Best time for vacation in Portoroz

Sunniest months:
August 23 days
July 22 days
June 20 days
Warmest months:
August 85.0 °F
July 84.9 °F
June 80.3 °F
Warmest sea temp:
August 78.7 °F
July 78.4 °F
September 74.2 °F
Coldest months:
January 45.5 °F
December 48.0 °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

Portoroz on a weather map

Current weather
22:16
Portoroz
+46°F
SW 6 mph
Feels like: +43°F
Precip.: 100%
Places in Slovenia:
Name
°F
Bled
+34°F
Bovec
+37°F
Bohinjsko Jezero
+34°F
Dolenjske Toplice
+39°F
Isola
+46°F
Koper
+46°F
Kranjska Gora
+34°F
Ljubljana
+39°F
Maribor
+36°F
Piran
+46°F
Portoroz
+46°F
Rogaska Slatina
+37°F
Rogla
+37°F
Strunjan
+46°F
Cerkno
+45°F
all places
24 Hours Forecast
Portoroz
Local time: 22:16
February 05, thursday
0000
46°F
SW
8 mph
0300
46°F
SW
11 mph
0600
46°F
SW
11 mph
0900
48°F
SW
8 mph
1200
48°F
W
2 mph
1500
46°F
S
1 mph
1800
46°F
NW
2 mph
2100
46°F
NW
4 mph
Units of measurement: °C / °F