The highest day temperature in March 2026 was 63°F. The lowest night temperature was 38°F. The average values for day and night temperatures during March were 58.1°F и 43.1°F respectivly.

The average sea surface temperature in March 2026 for Koper was 52.0°F. The maximum and minimum values were 48.8°F and 54.4°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 2.5 in. It makes march one of the least rainy months of the year.

The average wind speed in March is 6.5 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 7.2 hours.