Measurements:
°C
°F
Koper
38°F
S 2 mph
Feels like: 38°F
Precip: 100%
World Resorts Slovenia Koper Weather September Weather in Koper

Koper Weather: September

Average Day Temperature: 77.8°F
Average Night Temperature: 60.8°F
Sea Water Temperature: 76.4°F
Number of Sunny Days: 18 days
Sunshine Hours: 11.8 - 13.3 hours
Number of Rainy Days: 6 days
Precipitation Totals: 4.3 in

Air Temperature in September, °F

Select Year: 2024 2023 2022

The highest day temperature in September 2024 was 95°F. The lowest night temperature was 47°F. The average values for day and night temperatures during September were 76.3°F и 62.1°F respectivly.

Koper Water Sea Temperature in September, °F

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.

Sunny, Cloudy and Gloomy days

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Koper is 4.3 in. It makes september one of the most rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 5.7 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Koper in September is 8.9 hours.

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:
November 7 days
May 7 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 +26
Bohinjsko Jezero +28
Bovec +28
Cerkno +28
Dolenjske Toplice +40
Isola +38
Koper +38
Kranjska Gora +26
Ljubljana +36
Maribor +28
Moravske Toplice +30
Piran +38
Portoroz +38
Rogaska Slatina +32
Strunjan +38
24 Hours Weather Forecast
Koper
Local time: 06:27
22 nov, friday
0900 40°F
W
2 mph
1200 42°F
SW
14 mph
1500 38°F
W
11 mph
1800 36°F
W
4 mph
2100 30°F
W
1 mph
23 nov, saturday
0000 28°F
W
4 mph
0300 28°F
W
3 mph
0600 28°F
W
1 mph