The climate in Koper during April can be summarized as mild and a little damp.
April is in the spring in Koper and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a cool 17°C (62°F), whilst at night 8°C (46°F) is normal.
|Daytime temperature||16.6°C 61.9°F|
|Nightly temperature||8°C 46.4°F|
|Average temperature||12.3°C 54.1°F|
|Daily sunshine||6.6 hrs|
|Avg rainfall||90 mm 3.5 ins|
|Rainy days||13 days|
|Sea temperature||13.7°C 56.6°F|
|Windspeed||7.6kph 5 mph|
On average April is the 6th driest month of the year in Koper with around 90mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.6 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Koper in April 2021.
|Hottest month:||July||27.7°C 81.9°F|
|Driest month:||February||73mm 2.9ins|
|Coldest month:||January||7.4°C 45.3°F|
|Wettest month:||November||117mm 4.6ins|