World Resorts Slovenia Koper Weather

Koper sea water temperature

Current sea water temperature:
+67.3°F
Minimum sea water temperature in November: 67.8°F
Maximum sea water temperature in November: 56.1°F
Average sea water temperature in November: 61.3°F

Sea water temperature for the last 10 days:

October 28 67.3°F October 23 69.1°F
October 27 67.6°F October 22 70.0°F
October 26 67.5°F October 21 69.8°F
October 25 68.0°F October 20 69.8°F
October 24 68.5°F October 19 70.0°F

When is the warmest sea in Koper?

Based on the data about daily sea water temperature for the last three years the warmest sea in Koper was noticed in August, July and September.

Monthly Sea Temperatures in Koper, °F

Sea water temperature in August, °F

Show year:
2026
2025
2024

The average sea water temperature in August of 2026 was 81.3°F. The highest and lowest sea temperatures during the month were 83.8°F and 79.7°F.

Sea water temperature in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 79.5°F. The highest and lowest sea temperatures during the month were 83.8°F and 76.8°F.

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 77.2°F. The highest and lowest sea temperatures during the month were 81.5°F and 73.2°F.

Best time for vacation in Koper

Sunniest months:
August 23 days
July 22 days
June 20 days
Warmest months:
August 85.3 °F
July 84.8 °F
June 80.3 °F
Warmest sea temp:
August 78.6 °F
July 78.2 °F
September 74.0 °F
Coldest months:
January 45.5 °F
December 48.0 °F
February 48.3 °F
Rainiest months:
May 7 days
November 6 days
September 6 days
Windiest months:
March 6.5 mph
February 6.4 mph
November 6.2 mph

Koper on a weather map

Koper
+54°F
SW 16 mph
Feels like: +50°F
Precip.: 3%
Places in Slovenia:
Name
°F
+39°F
+54°F
+54°F
+39°F
+46°F
+46°F
+54°F
+54°F
+54°F
+45°F
24 Hours Forecast
Koper
Local time: 11:02
November 01, sunday
1200
54°F
SW
16 mph
1500
50°F
SW
14 mph
1800
50°F
SW
14 mph
2100
46°F
SW
14 mph
November 02, monday
0000
46°F
SW
14 mph
0300
48°F
SW
18 mph
0600
48°F
SW
15 mph
0900
50°F
SW
16 mph
Units of measurement: °C / °F