Zonguldak Province is a province along the western Black Sea coast region of Turkey. Its adjacent provinces are Düzce to the southwest, Bolu to the south, Karabük to the southeast, and Bartın to the east. The capital is Zonguldak. It was established in 1849 as a port town for the nearby coal mines in Ereğli and the coal trade remains its main economic activity
Since the discovery of coal in the province, Zonguldak has become a major coal production center.
Zonguldak has a humid subtropical climate. Summers are warm, the average temperature is around 23 °C in July and August. Winters are cool, the average temperature is around 6 °C in January and February. Precipitation is frequent, especially in the colder months, while it is generally heaviest in autumn and early winter, lightest (although still frequent) in spring.
The water temperature is always quite mild and fluctuates between 8° C and 20 °C throughout the year.