Garwolin climate — normals and trends
Garwolin (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 647 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 (18.9 °C on average) and the coldest is January (-2.8 °C). Rainfall peaks in July.
Garwolin averages 101 frost days, 6 hot days (≥ 30 °C) and 132 rainy days per year.
Garwolin 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 120 to 82 per year over the period.
The hottest day of the period reached 36.0 °C (on 29 August 1992) and the coldest -31.2 °C (on 11 January 1940).
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
GarwolinMazovia
- coords
- 51.90°, 21.61°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.3°C
Average daily high
12.0°C
Average daily low
4.6°C
Annual rainfall
647mm
Sunshine / day
7.3h
Mean relative humidity
78%
Average peak wind
17.2km/h
Seasonal range
21.7°C
Frost days (< 0 °C)
101 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
132 d/yr
Annual snowfall
65.1 cm
Average feels-like high
9.3 °C
Average feels-like low
1.5 °C
Average peak gust
35.3 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 = 0.45 · 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
36.0 °C
29 August 1992
Coldest day
-31.2 °C
11 January 1940
Wettest day
75 mm
6 August 2006
Windiest day
49.9 km/h
3 November 1981
Strongest gust
111.6 km/h
24 November 1984
Hottest feels-like
37.2 °C
14 July 2021
Coldest feels-like
-36.5 °C
11 January 1940
Snowiest day
24.1 cm
30 January 1979
Sunniest day
15.7 h
24 June 2019
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 | 4.4 °C | +5.0 °C | 42 mm | +1 mm |
| Feb | 2.3 °C | +1.2 °C | 15 mm | -25 mm |
| Mar | 11.8 °C | +6.0 °C | 31 mm | -8 mm |
| Apr | 16.6 °C | +3.9 °C | 26 mm | -23 mm |
| May | 16.1 °C | -2.3 °C | 71 mm | +8 mm |
| Jun | 23.1 °C | +1.2 °C | 62 mm | -11 mm |
| Jul | 24.7 °C | +1.2 °C | 95 mm | +13 mm |
| Aug | 25.0 °C | +1.9 °C | 25 mm | -44 mm |
| Sep | 20.5 °C | +2.2 °C | 74 mm | +21 mm |
| Oct | 11.9 °C | -0.3 °C | 57 mm | +13 mm |
| Nov | 6.6 °C | +1.0 °C | 48 mm | +1 mm |
| Dec | 3.8 °C | +2.3 °C | 20 mm | -27 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 Garwolin?
Garwolin has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.3 °C and it receives 647 mm of precipitation per year.
What is the hottest day ever recorded in Garwolin?
The hottest day measured in Garwolin between 1940 and 2025 was 29 August 1992, reaching 36.0 °C.
What is the coldest day in Garwolin?
The coldest day measured in Garwolin between 1940 and 2025 was 11 January 1940, at -31.2 °C.
Does it snow in Garwolin?
Yes. Garwolin gets on average 65.1 cm of snow per year and has around 101 frost days.
Has the climate of Garwolin warmed?
Yes: Garwolin warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Garwolin?
The wettest day measured in Garwolin between 1940 and 2025 was 6 August 2006, with 75 mm of rain in 24 hours.
What was the windiest day in Garwolin?
The windiest day measured in Garwolin between 1940 and 2025 was 3 November 1981, with winds reaching 49.9 km/h.
What is the warmest month in Garwolin?
The warmest month in Garwolin is July (18.9 °C on average); the coldest is January (-2.8 °C).
How much does it rain in Garwolin?
Garwolin receives on average 647 mm of precipitation per year, spread over about 132 rainy days.
Is it sunny in Garwolin?
Garwolin 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 Garwolin?
The heaviest 24-hour snowfall measured in Garwolin between 1940 and 2025 was 30 January 1979, with 24.1 cm.
Are there tropical nights in Garwolin?
Yes: Garwolin has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Garwolin?
In Garwolin, between 1940 and 2025, the highest apparent temperature reached 37.2 °C on 14 July 2021, and the lowest was -36.5 °C on 11 January 1940.
Compare Garwolin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Garwolin