Bytów climate — normals and trends
Bytów (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.4 °C and it receives 716 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 July (16.9 °C on average) and the coldest is January (-2.2 °C). Rainfall peaks in July.
Bytów averages 103 frost days, 1 hot days (≥ 30 °C) and 144 rainy days per year.
Bytów has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 125 to 81 per year over the period.
The hottest day of the period reached 34.7 °C (on 10 August 1992) and the coldest -29.2 °C (on 25 January 1942).
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
BytówPomerania
- coords
- 54.17°, 17.49°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.4°C
Average daily high
10.6°C
Average daily low
4.1°C
Annual rainfall
716mm
Sunshine / day
7.3h
Mean relative humidity
82%
Average peak wind
20.3km/h
Seasonal range
19.1°C
Frost days (< 0 °C)
103 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
144 d/yr
Annual snowfall
68.9 cm
Average feels-like high
7.6 °C
Average feels-like low
0.7 °C
Average peak gust
39.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.42 · 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
34.7 °C
10 August 1992
Coldest day
-29.2 °C
25 January 1942
Wettest day
59 mm
24 July 2010
Windiest day
62.7 km/h
2 November 1981
Strongest gust
119.9 km/h
18 January 1983
Hottest feels-like
35.5 °C
30 July 1994
Coldest feels-like
-35.3 °C
1 February 1956
Snowiest day
21.2 cm
4 April 1970
Sunniest day
16.0 h
8 June 2023
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 | 3.3 °C | +3.6 °C | 88 mm | +39 mm |
| Feb | 2.1 °C | +1.4 °C | 21 mm | -22 mm |
| Mar | 9.6 °C | +4.9 °C | 16 mm | -29 mm |
| Apr | 14.0 °C | +3.4 °C | 29 mm | -18 mm |
| May | 14.1 °C | -1.8 °C | 65 mm | +2 mm |
| Jun | 19.6 °C | +0.4 °C | 97 mm | +23 mm |
| Jul | 21.6 °C | +0.8 °C | 108 mm | +14 mm |
| Aug | 20.9 °C | +0.2 °C | 62 mm | -17 mm |
| Sep | 19.1 °C | +2.4 °C | 41 mm | -22 mm |
| Oct | 11.4 °C | 0.0 °C | 84 mm | +32 mm |
| Nov | 5.9 °C | +0.6 °C | 38 mm | -13 mm |
| Dec | 4.1 °C | +2.5 °C | 17 mm | -36 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 Bytów?
Bytów has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.4 °C and it receives 716 mm of precipitation per year.
What is the hottest day ever recorded in Bytów?
The hottest day measured in Bytów between 1940 and 2025 was 10 August 1992, reaching 34.7 °C.
What is the coldest day in Bytów?
The coldest day measured in Bytów between 1940 and 2025 was 25 January 1942, at -29.2 °C.
Does it snow in Bytów?
Yes. Bytów gets on average 68.9 cm of snow per year and has around 103 frost days.
Has the climate of Bytów warmed?
Yes: Bytów warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bytów?
The wettest day measured in Bytów between 1940 and 2025 was 24 July 2010, with 59 mm of rain in 24 hours.
What was the windiest day in Bytów?
The windiest day measured in Bytów between 1940 and 2025 was 2 November 1981, with winds reaching 62.7 km/h.
What is the warmest month in Bytów?
The warmest month in Bytów is July (16.9 °C on average); the coldest is January (-2.2 °C).
How much does it rain in Bytów?
Bytów receives on average 716 mm of precipitation per year, spread over about 144 rainy days.
Is it sunny in Bytów?
Bytów gets on average 7.3 hours of sunshine per day, roughly 2,665 hours per year over 1940-2025.
What is the biggest single-day snowfall in Bytów?
The heaviest 24-hour snowfall measured in Bytów between 1940 and 2025 was 4 April 1970, with 21.2 cm.
Are there tropical nights in Bytów?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Bytów.
What was the most extreme apparent temperature in Bytów?
In Bytów, between 1940 and 2025, the highest apparent temperature reached 35.5 °C on 30 July 1994, and the lowest was -35.3 °C on 1 February 1956.
Compare Bytów with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bytów