Current Sea Water Temperature:
+63.0°F
| Maximum Sea Water Temperature in November: | 69.8°F |
| Minimum Sea Water Temperature in November: | 56.8°F |
| Average water temperature in November: | 62.6°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| November 08 | 63.0°F | November 03 | 65.4°F |
| November 07 | 63.6°F | November 02 | 66.2°F |
| November 06 | 63.6°F | November 01 | 67.4°F |
| November 05 | 64.2°F | October 31 | 68.2°F |
| November 04 | 64.8°F | October 30 | 68.2°F |
When is the Warmest Sea for Koper?
According to our data for the last three years for Koper the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2026 for Koper was 84.8°F. The maximum and minimum values were 83.0°F and 87.6°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2026 for Koper was 82.8°F. The maximum and minimum values were 79.8°F and 87.6°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2026 for Koper was 80.2°F. The maximum and minimum values were 75.8°F and 85.0°F respectively.
Slovenia Resorts:
NAME
F°
| Bled |  |
+40 |
| Bohinjsko Jezero | |
+40 |
| Bovec |  |
+44 |
| Cerkno | |
+42 |
| Dolenjske Toplice |  |
+48 |
| Isola | |
+54 |
| Koper | |
+54 |
| Kranjska Gora | |
+40 |
| Ljubljana |  |
+46 |
| Maribor | |
+48 |
| Moravske Toplice | |
+46 |
| Piran | |
+54 |
| Portoroz | |
+54 |
| Rogaska Slatina | |
+48 |
| Strunjan | |
+54 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Koper
Local time: 14:18
08 nov, sunday
| 1500 |  |
54°F | E 1 mph |
| 1800 | |
48°F | S 0 mph |
| 2100 | |
48°F | W 2 mph |
09 nov, monday
| 0000 | |
48°F | SW 2 mph |
| 0300 |  |
46°F | SW 2 mph |
| 0600 |  |
42°F | W 3 mph |
| 0900 |  |
50°F | W 1 mph |
| 1200 | |
58°F | SE 2 mph |