Bartın has an oceanic climate with high and evenly distributed rainfall the year round. Summers are very warm and humid, and the average temperature is around 21°C in July and August. Winters are cool and damp, and the average temperature is around 6°C in January and February.
Precipitation is heaviest in autumn and early winter and lightest in spring. Snowfall is quite common between the months of December and March, snowing for a week or two, and it can be heavy once it snows.
The water temperature like in the whole Turkish Black Sea coast is always cool and fluctuates between 8° and 20°C throughout the year.