Average sea water temperature in September:
+73.6°F
| Minimum sea water temperature in September: | 78.8°F |
| Maximum sea water temperature in September: | 68.9°F |
Daily sea water temperature in September, °F
Show year:
2023
2022
2021
The average sea water temperature in September of 2023 was 75.5°F. The highest and lowest sea temperatures during the month were 78.3°F and 73.2°F.
Monthly sea water temperature in Koper, °F
Which Slovenia resorts have warmest sea in September?
| Place name | September 2023 | September 2022 |
|---|---|---|
| Koper | 75.5°F | 73.5°F |
| Piran | 75.5°F | 74.4°F |
| Portoroz | 75.5°F | 74.4°F |
| Strunjan | 75.4°F | 74.1°F |
| Isola | 75.3°F | 73.7°F |
| Cerkno | 74.3°F | 72.8°F |
| Bohinjsko Jezero | 74.1°F | 72.7°F |
| Dolenjske Toplice | 73.8°F | 70.7°F |
Best time for vacation in Koper
Koper on a weather map
Places in Slovenia:
Name
°F
24 Hours Forecast
Koper
Local time: 16:53
April 29, monday
1800
68°F
E
1 mph
1 mph
2100
57°F
W
4 mph
4 mph
April 30, tuesday
0000
57°F
W
4 mph
4 mph
0300
57°F
W
4 mph
4 mph
0600
55°F
W
4 mph
4 mph
0900
72°F
SW
1 mph
1 mph
1200
77°F
E
4 mph
4 mph
1500
75°F
E
4 mph
4 mph
