Measurements:
°C
°F
CURRENT WEATHER
01:57
Koper
72°F
W 9 mph
Feels like: 72°F
Precip: 5%
World Resorts Slovenia Koper Weather

7 Day Weather Forecast

07.22
wed
DAY
84°F
S 7 mph
precip
1%
NIGHT
64°F
W 4 mph
precip
6%
07.23
thu
DAY
82°F
E 6 mph
precip
3%
NIGHT
64°F
W 10 mph
precip
15%
07.24
fri
DAY
82°F
S 7 mph
precip
1%
NIGHT
62°F
W 4 mph
precip
6%
07.25
sat
DAY
82°F
E 5 mph
precip
1%
NIGHT
64°F
W 4 mph
precip
6%
07.26
sun
DAY
76°F
NW 11 mph
precip
48%
NIGHT
64°F
W 4 mph
precip
17%
07.27
mon
DAY
84°F
E 5 mph
precip
2%
NIGHT
68°F
W 4 mph
precip
7%
07.28
tue
DAY
90°F
E 4 mph
precip
1%
NIGHT
72°F
W 4 mph
precip
5%

Koper Sea Water Temperature in July, °F

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Koper was 26.7°F. The maximum and minimum values were 25.6°F and 28.8°F respectively.

Koper on the Weather Map

Best Time to Visit Koper
The most sunny months:
August 23 days
July 22 days
June 20 days
The most warm months:
August 88.9 °F
July 88.7 °F
June 83.7 °F
Warmest sea temperature:
August 81.5 °F
July 81.4 °F
September 76.5 °F
The most cold months:
January 45.0 °F
December 47.8 °F
February 48.1 °F
The most rainy months:
May 7 days
November 6 days
September 6 days
The most windy months:
March 6 mph
February 6 mph
November 6 mph
more details