Average sea water temperature in October:
+67.5°F
| Minimum sea water temperature in October: | 75.4°F |
| Maximum sea water temperature in October: | 61.2°F |
Daily sea water temperature in October, °F
Show year:
2026
2025
2024
The average sea water temperature in October of 2026 was 71.1°F. The highest and lowest sea temperatures during the month were 73.6°F and 67.5°F.
Monthly sea water temperature in Koper, °F
Which Slovenia resorts have warmest sea in October?
| Place name | October 2026 | October 2025 |
|---|---|---|
| Portoroz | 71.5°F | 67.1°F |
| Piran | 71.5°F | 67.1°F |
| Strunjan | 71.4°F | 67.0°F |
| Isola | 71.1°F | 66.9°F |
| Koper | 71.1°F | 66.9°F |
| Cerkno | 69.3°F | 65.6°F |
| Bohinjsko Jezero | 69.1°F | 65.4°F |
| Dolenjske Toplice | 67.2°F | 65.4°F |
Best time for vacation in Koper
Koper on a weather map
Places in Slovenia:
Name
°F
24 Hours Forecast
Koper
Local time: 01:37
October 27, tuesday
0300
45°F
W
5 mph
5 mph
0600
45°F
W
5 mph
5 mph
0900
54°F
W
4 mph
4 mph
1200
63°F
SW
2 mph
2 mph
1500
63°F
S
3 mph
3 mph
1800
50°F
W
4 mph
4 mph
2100
48°F
W
4 mph
4 mph
October 28, wednesday
0000
46°F
W
5 mph
5 mph
