Measurements:
°C
°F
Koper
42°F
N 6 mph
Feels like: 38°F
Precip: 85%
World Resorts Slovenia Koper Weather

Koper Sea Water Temperature

Current Sea Water Temperature:
+55.4°F
Maximum Sea Water Temperature in December: 61.2°F
Minimum Sea Water Temperature in December: 50.2°F
Average water temperature in December: 55.8°F

Sea Water Temperature for the Last 10 Days:

December 22 55.4°F December 17 56.2°F
December 21 56.2°F December 16 57.8°F
December 20 55.8°F December 15 57.8°F
December 19 55.8°F December 14 57.6°F
December 18 55.8°F December 13 58.0°F

When is the Warmest Sea for Koper?

According to our data for the last three years for Koper the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2024 2023 2022

The average sea surface temperature in August 2024 for Koper was 84.8°F. The maximum and minimum values were 82.0°F and 88.8°F respectively.

Sea Water Temperature in July

Select Year: 2024 2023 2022

The average sea surface temperature in July 2024 for Koper was 83.5°F. The maximum and minimum values were 80.4°F and 88.4°F respectively.

Sea Water Temperature in September

Select Year: 2024 2023 2022

The average sea surface temperature in September 2024 for Koper was 78.3°F. The maximum and minimum values were 71.0°F and 86.2°F respectively.

Best Time to Visit Koper
The most sunny months:
July 23 days
August 23 days
June 20 days
The most warm months:
August 89.1 °F
July 88.9 °F
June 83.4 °F
Warmest sea temperature:
August 81.7 °F
July 81.2 °F
September 76.4 °F
The most cold months:
January 44.9 °F
December 47.6 °F
February 47.9 °F
The most rainy months:
May 7 days
November 6 days
October 6 days
The most windy months:
February 6 mph
March 6 mph
November 6 mph

Koper on the Weather Map

Slovenia Resorts:
NAME
Bled +28
Bohinjsko Jezero +28
Bovec +32
Cerkno +28
Dolenjske Toplice +42
Isola +42
Koper +42
Kranjska Gora +28
Ljubljana +38
Maribor +40
Piran +42
Portoroz +42
Rogaska Slatina +38
Rogla +36
Strunjan +42
24 Hours Weather Forecast
Koper
Local time: 10:53
22 dec, sunday
1200 42°F
N
6 mph
1500 44°F
N
6 mph
1800 40°F
SW
3 mph
2100 38°F
NW
13 mph
23 dec, monday
0000 34°F
SW
12 mph
0300 34°F
SW
17 mph
0600 34°F
SW
16 mph
0900 34°F
S
7 mph