Climate Insights for Zonguldak

The climate in Zonguldak is temperate. The average annual temperature is 15°C and approximately 921mm of precipitation falls per year. Zonguldak receives a notable amount of rainfall throughout the year, including during its driest month. Zonguldak is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, March, when temperatures can drop to 5°C. Light snow can occur between January and December.

Temperatures in Zonguldak vary considerably across the year, with a 21°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 26°C and the mean temperature sits around 24°C. January is the coolest month, with minimum temperatures around 5°C and an average of 7°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between May and June, with a 5°C shift in average temperatures.

Zonguldak is a moderately rainy area, receiving approximately 921mm of precipitation annually, which averages out to around 77mm per month. The wettest month is December, averaging 120mm of rainfall. January and November also tend to see above-average precipitation. The driest month is August, with just 31mm. That's 89mm less than December, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Light snowfall can occur between January and December, totalling around 34cm annually. January is the snowiest month with approximately 19cm.

Zonguldak is moderately windy, with an average annual wind speed of 21km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 23km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in May, with average winds dropping to 19km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 23km/h in winter, 20km/h in spring, 21km/h in summer, 21km/h in autumn.

It is currently spring in Zonguldak, which began on March 20, 2026. Zonguldak is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 26°C, while the coldest stretch bottoms out in January near 5°C. Summer is next, beginning on June 21, 2026 — 87 days from now.

The best time to visit Zonguldak is during May, June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 61mm per month. By contrast, January can be quite cold with temperatures dropping to 5°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Zonguldak based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.