Koper Climate by Month
The temperature in Koper can vary greatly throughout the year.
The temperatures shift from warm
to cold.
It also has a notably wet climate with much precipitation.
Let's now guide you through the climate details for a complete overview.
Average day and night temperature
Depending on the time of the year, temperatures range from comfortable to chilly in Koper. Average daytime temperatures range from a comfortable 28°C in August, the warmest time of the year, to a chilly 9°C during cooler months like January. At night, temperatures typically average around 3°C during these months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Koper has a relatively rain/snowy climate with high precipitation levels, averaging 1371 mm of rain/snowfall annually. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, November receives heavy rainfall, averaging 178 mm of precipitation, recorded across 13 rainy days. In contrast, the drier season, July brings less rainfall, with 68 mm over 11 rainy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Seasonal changes in sunshine hours are quite dramatic in Koper. While July receives considerable daily sunshine with up to 10.6 hours, December marks the darkest time of the year, where sunshine is scarce with only 3.2 hours of sunlight per day.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is low throughout the year in Koper.
Relative humidity over the year
The best time of year to visit Koper in Slovenia
During the months of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
Most rainfall (rainy season) is seen in September, October and November.
August has an average maximum temperature of 28°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 9°C.
November tops the wettest month list with 178 mm of rainfall.
July is the driest month with 68 mm of precipitation.
July is the sunniest month with an average of 317 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
