Weather in Koper in Summer
| June | July | August | ||||
| Average day temperature: | 80.0°F | 85.1°F | 85.2°F | |||
| Average night temperature: | 62.4°F | 66.1°F | 66.5°F | |||
| Sea water temperature: | 73.1°F | 78.1°F | 78.5°F | |||
| Number of sunny days: | 20 days | 23 days | 23 days | |||
| Day length: | 15.4 - 15.7 h. | 14.8 - 15.6 h. | 12.4 - 14.7 h. | |||
| Number of rainy days: | 4 days | 5 days | 4 days | |||
| Precipitation totals: | 2.8 in. | 2.8 in. | 2.6 in. | |||
Day & Night air temperature, °F
June
July
August
0
14
28
42
56
70
84
98
112
85.8
85.9
80.8
68.5
68.1
64.7
| Day temperature | Night temperature |
Sea water temperature, °F
June
July
August
0
13
26
39
52
65
78
91
104
78.5
78.1
73.1
Precipitation total, in.
June
July
August
0.0
0.5
0.9
1.4
1.9
2.4
2.8
3.3
2.8
2.7
2.8
Sunny, partly cloudy and cloudy days
June
July
August
0
5
10
15
20
25
30
35
4
4
4
6
7
8
21
20
18
| Cloudy days | Partly cloudy days | Sunny days |
Wind speed, mph
June
July
August
0.0
0.9
1.8
2.7
3.5
4.4
5.3
6.2
7.1
5.2
4.9
5
Average sunny hours
June
July
August
0
1
2
3
4
5
6
7
8
9
10
11
12
13
9.9
10.9
10.9
Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.
Best time for vacation in Koper
Koper on a weather map
Leaflet | Tiles © Esri
Places in Slovenia:
Name
°F
24 Hours Forecast
Koper
Local time: 10:48
April 01, tuesday
1200
57°F
SW
19 mph
19 mph
1500
55°F
SW
22 mph
22 mph
1800
54°F
SW
19 mph
19 mph
2100
54°F
SW
21 mph
21 mph
April 02, wednesday
0000
54°F
SW
19 mph
19 mph
0300
54°F
SW
16 mph
16 mph
0600
52°F
SW
8 mph
8 mph
0900
57°F
SW
11 mph
11 mph
