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: 08:10
August 11, tuesday
0900
86°F
SW
3 mph
3 mph
1200
97°F
E
3 mph
3 mph
1500
93°F
E
4 mph
4 mph
1800
95°F
E
4 mph
4 mph
2100
81°F
SW
16 mph
16 mph
August 12, wednesday
0000
75°F
SW
9 mph
9 mph
0300
70°F
W
7 mph
7 mph
0600
70°F
W
9 mph
9 mph
