The highest day temperature in June 2025 was 90°F. The lowest night temperature was 48°F. The average values for day and night temperatures during June were 75.9°F и 58.1°F respectivly.

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

Precipitation total in June for Olomouc is 2.3 in. It makes june the most rainy month of the year.

The average wind speed in June is 6.7 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 Olomouc in June is 10.5 hours.