The highest day temperature in March 2025 was 61°F. The lowest night temperature was 36°F. The average values for day and night temperatures during March were 55.1°F и 48.0°F respectivly.

The average sea surface temperature in March 2025 for Koper was 51.6°F. The maximum and minimum values were 49.0°F and 53.8°F respectively.

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

Precipitation total in March for Koper is 2.7 in. It makes march one of the least rainy months of the year.

The average wind speed in March is 6.6 mph. This value is relatively stable throughout the year.

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 March is 7.3 hours.