Average sea water temperature in April:
+55.8°F
| Minimum sea water temperature in April: | 63.7°F |
| Maximum sea water temperature in April: | 49.6°F |
Daily sea water temperature in April, °F
Show year:
2026
2025
2024
The average sea water temperature in April of 2026 was 56.5°F. The highest and lowest sea temperatures during the month were 61.9°F and 52.2°F.
Monthly sea water temperature in Isola, °F
Which Slovenia resorts have warmest sea in April?
| Place name | April 2026 | April 2025 |
|---|---|---|
| Portoroz | 57.0°F | 56.5°F |
| Piran | 57.0°F | 56.5°F |
| Strunjan | 56.8°F | 56.3°F |
| Dolenjske Toplice | 56.7°F | 56.6°F |
| Isola | 56.5°F | 56.2°F |
| Bohinjsko Jezero | 56.3°F | 56.2°F |
| Koper | 56.3°F | 56.1°F |
| Cerkno | 56.2°F | 56.1°F |
Best time for vacation in Isola
Isola on a weather map
Places in Slovenia:
Name
°F
24 Hours Forecast
Isola
Local time: 04:50
May 22, friday
0600
59°F
W
4 mph
4 mph
0900
68°F
SW
3 mph
3 mph
1200
77°F
S
5 mph
5 mph
1500
75°F
SE
7 mph
7 mph
1800
73°F
SE
4 mph
4 mph
2100
61°F
W
4 mph
4 mph
May 23, saturday
0000
57°F
W
5 mph
5 mph
0300
57°F
SW
6 mph
6 mph
