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 78.7°F и 56.7°F respectivly.

You can expect various weather conditions during June. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in June for Bolu is 1.5 in. It makes june the most rainy month of the year.

The average wind speed in June is 4.1 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 Bolu in June is 8.9 hours.