18.05
mon
mon
Day
54°F
NE 4 mph
Precip.
100%
100%
Night
43°F
SE 2 mph
Precip.
60%
60%
19.05
tue
tue
Day
55°F
NE 2 mph
Precip.
100%
100%
Night
45°F
S 3 mph
Precip.
0%
0%
20.05
wed
wed
Day
59°F
NW 1 mph
Precip.
100%
100%
Night
46°F
S 4 mph
Precip.
61%
61%
21.05
thu
thu
Day
66°F
NW 2 mph
Precip.
0%
0%
Night
50°F
S 2 mph
Precip.
0%
0%
22.05
fri
fri
Day
66°F
N 2 mph
Precip.
0%
0%
Night
52°F
SW 2 mph
Precip.
0%
0%
23.05
sat
sat
Day
68°F
NW 2 mph
Precip.
29%
29%
Night
55°F
SW 2 mph
Precip.
0%
0%
24.05
sun
sun
Day
72°F
N 2 mph
Precip.
23%
23%
Night
55°F
NE 4 mph
Precip.
100%
100%
25.05
mon
mon
Day
66°F
W 4 mph
Precip.
100%
100%
Night
50°F
SW 4 mph
Precip.
0%
0%
26.05
tue
tue
Day
64°F
N 2 mph
Precip.
24%
24%
Night
48°F
SW 2 mph
Precip.
0%
0%
27.05
wed
wed
Day
59°F
NW 3 mph
Precip.
100%
100%
Night
48°F
SW 3 mph
Precip.
100%
100%
28.05
thu
thu
Day
59°F
N 2 mph
Precip.
100%
100%
Night
48°F
SE 2 mph
Precip.
0%
0%
29.05
fri
fri
Day
64°F
NE 5 mph
Precip.
0%
0%
Night
48°F
SE 2 mph
Precip.
0%
0%
30.05
sat
sat
Day
64°F
NE 6 mph
Precip.
79%
79%
Night
55°F
NE 5 mph
Precip.
55%
55%
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 61.3°F. The highest and lowest sea temperatures during the month were 64.6°F and 58.1°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 72.9°F. The highest and lowest sea temperatures during the month were 77.5°F and 66.4°F.
Air temperature in Cerkno, °F
Precipitation total in Cerkno, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Cerkno
Cerkno on a weather map
Places in Slovenia:
Name
°F
24 Hours Forecast
Cerkno
Local time: 02:40
May 18, monday
0300
39°F
SW
2 mph
2 mph
0600
39°F
S
2 mph
2 mph
0900
50°F
NE
2 mph
2 mph
1200
54°F
NE
4 mph
4 mph
1500
54°F
NE
4 mph
4 mph
1800
52°F
NE
5 mph
5 mph
2100
45°F
E
2 mph
2 mph
May 19, tuesday
0000
43°F
SE
2 mph
2 mph
