Zonguldak climate — normals and trends
Zonguldak (Republic of Türkiye) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.8 °C and it receives 896 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (22.7 °C on average) and the coldest is January (5.7 °C). Rainfall peaks in December.
Zonguldak averages 7 frost days, 0 hot days (≥ 30 °C) and 120 rainy days per year.
Zonguldak has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 12 to 2 per year over the period.
The hottest day of the period reached 33.5 °C (on 9 July 2000) and the coldest -7.1 °C (on 6 February 1960).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
ZonguldakZonguldak Province
- coords
- 41.45°, 31.79°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.8°C
Average daily high
15.6°C
Average daily low
12.0°C
Annual rainfall
896mm
Sunshine / day
9.6h
Mean relative humidity
80%
Average peak wind
20.3km/h
Seasonal range
17.0°C
Frost days (< 0 °C)
7 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
120 d/yr
Annual snowfall
45.4 cm
Average feels-like high
14.9 °C
Average feels-like low
10.2 °C
Average peak gust
30.3 km/h
Tropical nights (≥ 20 °C)
51 d/yr
Solar radiation
14.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.37 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
33.5 °C
9 July 2000
Coldest day
-7.1 °C
6 February 1960
Wettest day
85 mm
12 July 1965
Windiest day
65.5 km/h
9 October 2003
Strongest gust
99.7 km/h
15 November 1992
Hottest feels-like
37.1 °C
9 July 2000
Coldest feels-like
-13.0 °C
4 February 1950
Snowiest day
20.9 cm
2 January 1983
Sunniest day
14.1 h
28 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 10.8 °C | +3.2 °C | 70 mm | -33 mm |
| Feb | 5.7 °C | -2.0 °C | 115 mm | +31 mm |
| Mar | 12.5 °C | +3.4 °C | 31 mm | -49 mm |
| Apr | 11.4 °C | -1.3 °C | 64 mm | +9 mm |
| May | 17.1 °C | +0.1 °C | 33 mm | -9 mm |
| Jun | 22.3 °C | +0.8 °C | 12 mm | -39 mm |
| Jul | 25.6 °C | +1.6 °C | 1 mm | -49 mm |
| Aug | 24.9 °C | +0.5 °C | 6 mm | -48 mm |
| Sep | 22.2 °C | +0.6 °C | 75 mm | +4 mm |
| Oct | 18.6 °C | +0.8 °C | 197 mm | +103 mm |
| Nov | 17.5 °C | +3.5 °C | 39 mm | -60 mm |
| Dec | 11.5 °C | +1.5 °C | 200 mm | +86 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Zonguldak?
Zonguldak has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.8 °C and it receives 896 mm of precipitation per year.
What is the hottest day ever recorded in Zonguldak?
The hottest day measured in Zonguldak between 1940 and 2025 was 9 July 2000, reaching 33.5 °C.
What is the coldest day in Zonguldak?
The coldest day measured in Zonguldak between 1940 and 2025 was 6 February 1960, at -7.1 °C.
Does it snow in Zonguldak?
Yes. Zonguldak gets on average 45.4 cm of snow per year and has around 7 frost days.
Has the climate of Zonguldak warmed?
Yes: Zonguldak warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Zonguldak?
The wettest day measured in Zonguldak between 1940 and 2025 was 12 July 1965, with 85 mm of rain in 24 hours.
What was the windiest day in Zonguldak?
The windiest day measured in Zonguldak between 1940 and 2025 was 9 October 2003, with winds reaching 65.5 km/h.
What is the warmest month in Zonguldak?
The warmest month in Zonguldak is August (22.7 °C on average); the coldest is January (5.7 °C).
How much does it rain in Zonguldak?
Zonguldak receives on average 896 mm of precipitation per year, spread over about 120 rainy days.
Is it sunny in Zonguldak?
Zonguldak gets on average 9.6 hours of sunshine per day, roughly 3,504 hours per year over 1940-2025.
What is the biggest single-day snowfall in Zonguldak?
The heaviest 24-hour snowfall measured in Zonguldak between 1940 and 2025 was 2 January 1983, with 20.9 cm.
Are there tropical nights in Zonguldak?
Yes: Zonguldak has on average 51 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Zonguldak?
In Zonguldak, between 1940 and 2025, the highest apparent temperature reached 37.1 °C on 9 July 2000, and the lowest was -13.0 °C on 4 February 1950.
Compare Zonguldak with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Zonguldak