Average sea water temperature in January:
+50.8°F
| Minimum sea water temperature in January: | 54.9°F |
| Maximum sea water temperature in January: | 46.8°F |
Daily sea water temperature in January, °F
Show year:
2026
2025
2024
The average sea water temperature in January of 2026 was 50.7°F. The highest and lowest sea temperatures during the month were 53.6°F and 48.6°F.
Monthly sea water temperature in Isola, °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 Isola
Isola on a weather map
Places in Slovenia:
Name
°F
24 Hours Forecast
Isola
Local time: 12:21
March 17, tuesday
1500
55°F
SW
11 mph
11 mph
1800
52°F
SW
9 mph
9 mph
2100
48°F
W
11 mph
11 mph
March 18, wednesday
0000
46°F
SW
7 mph
7 mph
0300
45°F
SW
5 mph
5 mph
0600
39°F
S
5 mph
5 mph
0900
48°F
SW
9 mph
9 mph
1200
52°F
SW
12 mph
12 mph
