Slavsk climate — normals and trends
Slavsk (Russia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.5 °C and it receives 708 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 (17.9 °C on average) and the coldest is January (-3.0 °C). Rainfall peaks in July.
Slavsk averages 101 frost days, 2 hot days (≥ 30 °C) and 141 rainy days per year.
Slavsk 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 123 to 79 per year over the period.
The hottest day of the period reached 34.3 °C (on 4 August 2014) and the coldest -35.2 °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
SlavskKaliningrad Oblast
- coords
- 55.04°, 21.68°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.5°C
Average daily high
10.7°C
Average daily low
4.3°C
Annual rainfall
708mm
Sunshine / day
7.5h
Mean relative humidity
80%
Average peak wind
18.0km/h
Seasonal range
20.9°C
Frost days (< 0 °C)
101 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
141 d/yr
Annual snowfall
70.7 cm
Average feels-like high
8.0 °C
Average feels-like low
1.1 °C
Average peak gust
37.2 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.40 · 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
34.3 °C
4 August 2014
Coldest day
-35.2 °C
25 January 1942
Wettest day
91 mm
9 August 2005
Windiest day
55.2 km/h
22 February 1953
Strongest gust
122.8 km/h
4 December 1999
Hottest feels-like
36.1 °C
30 July 1994
Coldest feels-like
-40.6 °C
25 January 1942
Snowiest day
14.5 cm
30 January 1979
Sunniest day
17.0 h
17 June 2010
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 | 4.3 °C | +5.3 °C | 73 mm | +23 mm |
| Feb | 1.4 °C | +1.4 °C | 14 mm | -28 mm |
| Mar | 9.4 °C | +5.0 °C | 27 mm | -16 mm |
| Apr | 14.4 °C | +3.5 °C | 25 mm | -21 mm |
| May | 14.2 °C | -2.3 °C | 52 mm | -1 mm |
| Jun | 19.1 °C | -0.8 °C | 89 mm | +19 mm |
| Jul | 22.7 °C | +0.9 °C | 106 mm | +18 mm |
| Aug | 21.1 °C | -0.4 °C | 85 mm | +4 mm |
| Sep | 19.8 °C | +2.7 °C | 95 mm | +31 mm |
| Oct | 11.5 °C | +0.3 °C | 95 mm | +36 mm |
| Nov | 5.2 °C | +0.2 °C | 45 mm | -12 mm |
| Dec | 4.5 °C | +3.1 °C | 29 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 Slavsk?
Slavsk has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.5 °C and it receives 708 mm of precipitation per year.
What is the hottest day ever recorded in Slavsk?
The hottest day measured in Slavsk between 1940 and 2025 was 4 August 2014, reaching 34.3 °C.
What is the coldest day in Slavsk?
The coldest day measured in Slavsk between 1940 and 2025 was 25 January 1942, at -35.2 °C.
Does it snow in Slavsk?
Yes. Slavsk gets on average 70.7 cm of snow per year and has around 101 frost days.
Has the climate of Slavsk warmed?
Yes: Slavsk warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Slavsk?
The wettest day measured in Slavsk between 1940 and 2025 was 9 August 2005, with 91 mm of rain in 24 hours.
What was the windiest day in Slavsk?
The windiest day measured in Slavsk between 1940 and 2025 was 22 February 1953, with winds reaching 55.2 km/h.
What is the warmest month in Slavsk?
The warmest month in Slavsk is July (17.9 °C on average); the coldest is January (-3.0 °C).
How much does it rain in Slavsk?
Slavsk receives on average 708 mm of precipitation per year, spread over about 141 rainy days.
Is it sunny in Slavsk?
Slavsk gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Slavsk?
The heaviest 24-hour snowfall measured in Slavsk between 1940 and 2025 was 30 January 1979, with 14.5 cm.
Are there tropical nights in Slavsk?
Yes: Slavsk has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Slavsk?
In Slavsk, between 1940 and 2025, the highest apparent temperature reached 36.1 °C on 30 July 1994, and the lowest was -40.6 °C on 25 January 1942.
Compare Slavsk with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Slavsk