Average sea water temperature in April:
+56.1°F
| Minimum sea water temperature in April: | 64.4°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 57.0°F. The highest and lowest sea temperatures during the month were 62.2°F and 52.7°F.
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| Portoroz |
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Monthly sea water temperature in Portoroz, °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 Portoroz
Portoroz on a weather map
Places in Slovenia:
Name
°F
24 Hours Forecast
Portoroz
Local time: 13:52
September 20, sunday
1500
75°F
SE
7 mph
7 mph
1800
72°F
SE
2 mph
2 mph
2100
66°F
W
3 mph
3 mph
September 21, monday
0000
64°F
W
3 mph
3 mph
0300
63°F
W
3 mph
3 mph
0600
63°F
SW
3 mph
3 mph
0900
66°F
SW
3 mph
3 mph
1200
79°F
SW
4 mph
4 mph
