Bozüyük climate — normals and trends
Bozüyük (Republic of Türkiye) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 11.3 °C and it receives 649 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 (21.2 °C on average) and the coldest is January (1.1 °C). Rainfall peaks in April.
Bozüyük averages 76 frost days, 20 hot days (≥ 30 °C) and 113 rainy days per year.
Bozüyük has warmed by +2.7 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.
The number of frost days there went from about 91 to 61 per year over the period.
The hottest day of the period reached 39.7 °C (on 16 July 2016) and the coldest -27.4 °C (on 31 December 1941).
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
BozüyükBilecik
- coords
- 39.91°, 30.04°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.3°C
Average daily high
16.8°C
Average daily low
6.3°C
Annual rainfall
649mm
Sunshine / day
9.6h
Mean relative humidity
73%
Average peak wind
12.5km/h
Seasonal range
20.1°C
Frost days (< 0 °C)
76 d/yr
Hot days (≥ 30 °C)
20 d/yr
Rainy days (≥ 1 mm)
113 d/yr
Annual snowfall
88.8 cm
Average feels-like high
15.4 °C
Average feels-like low
4.3 °C
Average peak gust
32.3 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
15.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.56 · 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
39.7 °C
16 July 2016
Coldest day
-27.4 °C
31 December 1941
Wettest day
67 mm
3 July 1959
Windiest day
37.5 km/h
10 March 1958
Strongest gust
104.4 km/h
6 February 2003
Hottest feels-like
41.4 °C
29 July 2000
Coldest feels-like
-32.8 °C
31 December 1941
Snowiest day
22.2 cm
17 December 2003
Sunniest day
14.0 h
20 May 1940
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 | +5.4 °C | 51 mm | -15 mm |
| Feb | 5.4 °C | -1.7 °C | 49 mm | -15 mm |
| Mar | 17.4 °C | +6.8 °C | 47 mm | -26 mm |
| Apr | 15.1 °C | -0.8 °C | 81 mm | +7 mm |
| May | 22.1 °C | +1.8 °C | 56 mm | -18 mm |
| Jun | 28.1 °C | +4.0 °C | 4 mm | -46 mm |
| Jul | 32.4 °C | +5.4 °C | 2 mm | -23 mm |
| Aug | 30.9 °C | +3.3 °C | 15 mm | -5 mm |
| Sep | 25.9 °C | +1.9 °C | 26 mm | -5 mm |
| Oct | 19.5 °C | +0.7 °C | 66 mm | +16 mm |
| Nov | 18.1 °C | +4.8 °C | 33 mm | -20 mm |
| Dec | 8.7 °C | +1.1 °C | 58 mm | -13 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 Bozüyük?
Bozüyük has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 11.3 °C and it receives 649 mm of precipitation per year.
What is the hottest day ever recorded in Bozüyük?
The hottest day measured in Bozüyük between 1940 and 2025 was 16 July 2016, reaching 39.7 °C.
What is the coldest day in Bozüyük?
The coldest day measured in Bozüyük between 1940 and 2025 was 31 December 1941, at -27.4 °C.
Does it snow in Bozüyük?
Yes. Bozüyük gets on average 88.8 cm of snow per year and has around 76 frost days.
Has the climate of Bozüyük warmed?
Yes: Bozüyük warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bozüyük?
The wettest day measured in Bozüyük between 1940 and 2025 was 3 July 1959, with 67 mm of rain in 24 hours.
What was the windiest day in Bozüyük?
The windiest day measured in Bozüyük between 1940 and 2025 was 10 March 1958, with winds reaching 37.5 km/h.
What is the warmest month in Bozüyük?
The warmest month in Bozüyük is August (21.2 °C on average); the coldest is January (1.1 °C).
How much does it rain in Bozüyük?
Bozüyük receives on average 649 mm of precipitation per year, spread over about 113 rainy days.
Is it sunny in Bozüyük?
Bozüyük 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 Bozüyük?
The heaviest 24-hour snowfall measured in Bozüyük between 1940 and 2025 was 17 December 2003, with 22.2 cm.
Are there tropical nights in Bozüyük?
Yes: Bozüyük has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bozüyük?
In Bozüyük, between 1940 and 2025, the highest apparent temperature reached 41.4 °C on 29 July 2000, and the lowest was -32.8 °C on 31 December 1941.
Compare Bozüyük with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bozüyük