17.03
tue
tue
Day
57°F
SW 11 mph
Precip.
0%
0%
Night
41°F
SW 6 mph
Precip.
0%
0%
18.03
wed
wed
Day
46°F
SW 15 mph
Precip.
79%
79%
Night
48°F
SW 13 mph
Precip.
0%
0%
19.03
thu
thu
Day
54°F
SW 14 mph
Precip.
0%
0%
Night
45°F
W 11 mph
Precip.
0%
0%
20.03
fri
fri
Day
54°F
SW 12 mph
Precip.
0%
0%
Night
43°F
W 11 mph
Precip.
0%
0%
21.03
sat
sat
Day
55°F
W 10 mph
Precip.
0%
0%
Night
41°F
W 5 mph
Precip.
0%
0%
22.03
sun
sun
Day
55°F
NE 4 mph
Precip.
0%
0%
Night
43°F
W 2 mph
Precip.
0%
0%
23.03
mon
mon
Day
55°F
E 4 mph
Precip.
0%
0%
Night
41°F
W 3 mph
Precip.
0%
0%
24.03
tue
tue
Day
55°F
SE 5 mph
Precip.
0%
0%
Night
43°F
NW 4 mph
Precip.
0%
0%
25.03
wed
wed
Day
54°F
NW 6 mph
Precip.
100%
100%
Night
50°F
W 4 mph
Precip.
78%
78%
26.03
thu
thu
Day
59°F
E 3 mph
Precip.
50%
50%
Night
50°F
W 2 mph
Precip.
0%
0%
27.03
fri
fri
Day
59°F
SW 6 mph
Precip.
100%
100%
Night
48°F
SW 6 mph
Precip.
0%
0%
28.03
sat
sat
Day
63°F
SW 8 mph
Precip.
0%
0%
Night
48°F
SW 6 mph
Precip.
40%
40%
29.03
sun
sun
Day
59°F
SW 7 mph
Precip.
22%
22%
Night
48°F
W 3 mph
Precip.
0%
0%
30.03
mon
mon
Day
59°F
NE 2 mph
Precip.
100%
100%
Night
48°F
NW 3 mph
Precip.
80%
80%
Sea water temperature in March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 51.8°F. The highest and lowest sea temperatures during the month were 54.0°F and 48.9°F.
Air temperature in Koper, °F
Precipitation total in Koper, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Koper
Koper on a weather map
Places in Slovenia:
Name
°F
24 Hours Forecast
Koper
Local time: 08:30
March 17, tuesday
0900
52°F
SW
11 mph
11 mph
1200
57°F
SW
11 mph
11 mph
1500
57°F
W
11 mph
11 mph
1800
50°F
W
8 mph
8 mph
2100
43°F
W
6 mph
6 mph
March 18, wednesday
0000
41°F
SW
6 mph
6 mph
0300
39°F
S
4 mph
4 mph
0600
39°F
SW
4 mph
4 mph
