Average sea water temperature in May:
+64.2°F
| Minimum sea water temperature in May: | 74.7°F |
| Maximum sea water temperature in May: | 56.7°F |
Daily sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 65.4°F. The highest and lowest sea temperatures during the month were 74.7°F and 57.7°F.
Monthly sea water temperature in Isola, °F
Which Slovenia resorts have warmest sea in May?
| Place name | May 2026 | May 2025 |
|---|---|---|
| Portoroz | 65.5°F | 65.3°F |
| Piran | 65.5°F | 65.3°F |
| Strunjan | 65.5°F | 65.2°F |
| Koper | 65.4°F | 64.9°F |
| Isola | 65.4°F | 65.1°F |
| Cerkno | 64.3°F | 63.3°F |
| Bohinjsko Jezero | 64.3°F | 63.2°F |
| Dolenjske Toplice | 62.4°F | 62.3°F |
Best time for vacation in Isola
Isola on a weather map
Places in Slovenia:
Name
°F
24 Hours Forecast
Isola
Local time: 02:58
June 11, thursday
0300
55°F
W
7 mph
7 mph
0600
52°F
W
7 mph
7 mph
0900
61°F
SW
9 mph
9 mph
1200
68°F
SW
12 mph
12 mph
1500
64°F
SW
14 mph
14 mph
1800
68°F
SW
13 mph
13 mph
2100
59°F
SW
9 mph
9 mph
June 12, friday
0000
54°F
SW
6 mph
6 mph
