Current Sea Water Temperature:
+64.2°F
| Maximum Sea Water Temperature in May: | 74.0°F |
| Minimum Sea Water Temperature in May: | 58.4°F |
| Average water temperature in May: | 65.4°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| May 15 | 64.2°F | May 10 | 64.6°F |
| May 14 | 64.6°F | May 09 | 63.2°F |
| May 13 | 65.4°F | May 08 | 62.6°F |
| May 12 | 66.2°F | May 07 | 61.0°F |
| May 11 | 64.6°F | May 06 | 61.0°F |
When is the Warmest Sea for Cerkno?
According to our data for the last three years for Cerkno 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 2025 for Cerkno was 79.0°F. The maximum and minimum values were 76.0°F and 80.8°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Cerkno was 80.4°F. The maximum and minimum values were 77.8°F and 83.2°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Cerkno was 76.2°F. The maximum and minimum values were 73.4°F and 78.4°F respectively.
Slovenia Resorts:
NAME
F°
| Bled |  |
+34 |
| Bohinjsko Jezero | |
+34 |
| Cerkno |  |
+36 |
| Dolenjske Toplice |  |
+50 |
| Isola | |
+50 |
| Koper | |
+50 |
| Kranjska Gora | |
+34 |
| Ljubljana | |
+46 |
| Maribor | |
+48 |
| Moravske Toplice | |
+50 |
| Piran | |
+50 |
| Portoroz | |
+50 |
| Postojna | |
+42 |
| Rogaska Slatina | |
+48 |
| Strunjan | |
+50 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Cerkno
Local time: 19:40
15 may, friday
| 2100 |  |
36°F | SW 2 mph |
16 may, saturday
| 0000 | |
36°F | SE 1 mph |
| 0300 | |
36°F | S 2 mph |
| 0600 | |
36°F | SW 4 mph |
| 0900 | |
42°F | SW 4 mph |
| 1200 |  |
48°F | SW 5 mph |
| 1500 |  |
50°F | S 4 mph |
| 1800 | |
48°F | S 4 mph |