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SloveniaThe climate of Koper
The current climate in Koper features temperatures ranging from a high of 30°C to a low of 10°C throughout the year. The average yearly temperature is around 20°C. At night, temperatures in the colder months average around 2°C and in the warmer months around 19°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Koper, Slovenia.
Temperature records
The highest temperature recorded in Koper in recent years was 37°C in August 2017. The lowest daytime temperature recorded was -4°C in February 2018.
Precipitation and snowfall
On average, Koper gets 944 mm of precipitation each year. Of this, about 4,6 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Curious about the weather in other parts of Slovenia? Check out the climate and weather for spots like Ljubljana, Bled, Bohinj, or explore other destinations in Slovenia.
Best time to visit Koper?
The best time to visit Koper for sunny weather is April through October. During this period, you'll have nice temperatures and not too much rain, making it a great time to visit Koper. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
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Climate Table of Koper
The climate table of Koper shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 10 | 12 | 14 | 18 | 22 | 28 | 30 | 30 | 25 | 20 | 15 | 11 |
| Temp. min (°C) | 3 | 4 | 5 | 9 | 13 | 18 | 20 | 19 | 16 | 12 | 8 | 4 |
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| Precipitation (mm) | 53 | 80 | 48 | 60 | 84 | 68 | 63 | 79 | 115 | 89 | 121 | 84 |
| Snow (cm) | 0,9 | 1,9 | 0,1 | 0,3 | 0 | 0 | 0 | 0 | 0 | 0 | 0,4 | 1,0 |
| UV Index | 3 | 4 | 5 | 7 | 6 | 6 | 7 | 8 | 5 | 3 | 2 | 2 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
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Temperature charts
These charts display the average temperatures in Koper, Slovenia. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Koper
Yearly Temperature in Koper
Precipitation charts
These charts show the average amount of precipitation in Koper, Slovenia. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Koper
Total Yearly Precipitation in Koper
Average Snowfall per Month in Koper
Total Yearly Snowfall in Koper
UV index chart
This chart shows the average UV index per month in Koper, Slovenia. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Koper
Weather experiences in Koper
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Average weather in Koper by month
Click on a month below to see detailed weather info for Koper. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.