Average sea water temperature in April:
+55.9°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:
2025
2024
2023
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47
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62
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68
The average sea water temperature in April of 2025 was 54.3°F. The highest and lowest sea temperatures during the month were 56.7°F and 52.3°F.
Monthly sea water temperature in Piran, °F
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
13
26
39
52
65
78
91
104
55.7
61.7
67.5
74.1
78.7
78.3
73.4
64.2
55.9
50.7
49.3
51.2
Which Slovenia resorts have warmest sea in April?
Place name | April 2025 | April 2024 |
---|---|---|
Dolenjske Toplice | 54.6°F | 58.4°F |
Portoroz | 54.3°F | 58.7°F |
Piran | 54.3°F | 58.7°F |
Strunjan | 54.1°F | 58.4°F |
Bohinjsko Jezero | 54.0°F | 57.1°F |
Cerkno | 53.9°F | 57.1°F |
Isola | 53.9°F | 58.2°F |
Koper | 53.9°F | 58.0°F |
Best time for vacation in Piran
Piran on a weather map
Leaflet | Tiles © Esri
Places in Slovenia:
Name
°F
24 Hours Forecast
Piran
Local time: 04:56
April 18, friday
0600

48°F
NW
9 mph
9 mph
0900

57°F
N
9 mph
9 mph
1200

59°F
NE
7 mph
7 mph
1500

59°F
NE
10 mph
10 mph
1800

55°F
N
4 mph
4 mph
2100

52°F
NW
4 mph
4 mph
April 19, saturday
0000

52°F
NW
3 mph
3 mph
0300

52°F
NW
4 mph
4 mph