Gostynin climate — normals and trends
Gostynin (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.3 °C and it receives 600 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 (18.6 °C on average) and the coldest is January (-2.3 °C). Rainfall peaks in July.
Gostynin averages 97 frost days, 4 hot days (≥ 30 °C) and 126 rainy days per year.
Gostynin 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 116 to 78 per year over the period.
The hottest day of the period reached 38.8 °C (on 22 August 1943) and the coldest -30.5 °C (on 30 January 1987).
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
GostyninMazovia
- coords
- 52.43°, 19.46°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.3°C
Average daily high
11.9°C
Average daily low
4.7°C
Annual rainfall
600mm
Sunshine / day
7.4h
Mean relative humidity
79%
Average peak wind
18.8km/h
Seasonal range
20.9°C
Frost days (< 0 °C)
97 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
126 d/yr
Annual snowfall
54.7 cm
Average feels-like high
9.1 °C
Average feels-like low
1.6 °C
Average peak gust
36.2 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.43 · 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
38.8 °C
22 August 1943
Coldest day
-30.5 °C
30 January 1987
Wettest day
61 mm
6 August 2006
Windiest day
54.6 km/h
20 January 1986
Strongest gust
106.9 km/h
24 November 1984
Hottest feels-like
37.4 °C
11 July 1959
Coldest feels-like
-35.4 °C
30 January 1987
Snowiest day
14.8 cm
1 November 1941
Sunniest day
16.0 h
26 June 2022
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 | 4.6 °C | +4.8 °C | 47 mm | +9 mm |
| Feb | 2.7 °C | +1.4 °C | 8 mm | -29 mm |
| Mar | 11.6 °C | +5.7 °C | 29 mm | -9 mm |
| Apr | 16.7 °C | +4.2 °C | 28 mm | -14 mm |
| May | 16.0 °C | -1.9 °C | 64 mm | +3 mm |
| Jun | 22.6 °C | +1.3 °C | 54 mm | -10 mm |
| Jul | 23.6 °C | +0.6 °C | 120 mm | +40 mm |
| Aug | 23.8 °C | +1.0 °C | 37 mm | -25 mm |
| Sep | 20.3 °C | +2.1 °C | 70 mm | +23 mm |
| Oct | 11.9 °C | -0.4 °C | 64 mm | +23 mm |
| Nov | 6.4 °C | +0.6 °C | 56 mm | +12 mm |
| Dec | 3.9 °C | +2.1 °C | 19 mm | -26 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 Gostynin?
Gostynin has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.3 °C and it receives 600 mm of precipitation per year.
What is the hottest day ever recorded in Gostynin?
The hottest day measured in Gostynin between 1940 and 2025 was 22 August 1943, reaching 38.8 °C.
What is the coldest day in Gostynin?
The coldest day measured in Gostynin between 1940 and 2025 was 30 January 1987, at -30.5 °C.
Does it snow in Gostynin?
Yes. Gostynin gets on average 54.7 cm of snow per year and has around 97 frost days.
Has the climate of Gostynin warmed?
Yes: Gostynin warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gostynin?
The wettest day measured in Gostynin between 1940 and 2025 was 6 August 2006, with 61 mm of rain in 24 hours.
What was the windiest day in Gostynin?
The windiest day measured in Gostynin between 1940 and 2025 was 20 January 1986, with winds reaching 54.6 km/h.
What is the warmest month in Gostynin?
The warmest month in Gostynin is July (18.6 °C on average); the coldest is January (-2.3 °C).
How much does it rain in Gostynin?
Gostynin receives on average 600 mm of precipitation per year, spread over about 126 rainy days.
Is it sunny in Gostynin?
Gostynin gets on average 7.4 hours of sunshine per day, roughly 2,701 hours per year over 1940-2025.
What is the biggest single-day snowfall in Gostynin?
The heaviest 24-hour snowfall measured in Gostynin between 1940 and 2025 was 1 November 1941, with 14.8 cm.
Are there tropical nights in Gostynin?
Yes: Gostynin has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gostynin?
In Gostynin, between 1940 and 2025, the highest apparent temperature reached 37.4 °C on 11 July 1959, and the lowest was -35.4 °C on 30 January 1987.
Compare Gostynin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gostynin