Trabzon has a climate typical of the Black Sea region with plentiful precipitation. Under the Köppen climate classification, it has an oceanic climate (Cfb). Summers are warm and humid, and the average maximum temperature is around 27 °C (81 °F) in August. Winters are cool and damp, and the lowest average minimum temperature is around 5 °C (41 °F) in January.
Precipitation is heaviest in autumn and winter, with a marked reduction in the summer months. 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 rest of the Black Sea coast of Turkey, is always cool and fluctuates between 8 °C (46 °F) and 20 °C (68 °F) throughout the year
