Slyudyanka climate — normals and trends
Slyudyanka (Russia) has a dry-winter subarctic climate (Dwc) under the Köppen-Geiger classification. Its mean annual temperature is -1.2 °C and it receives 690 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 (15.9 °C on average) and the coldest is January (-20.2 °C). Rainfall peaks in July.
Slyudyanka averages 222 frost days, 0 hot days (≥ 30 °C) and 123 rainy days per year.
Slyudyanka has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 226 to 218 per year over the period.
The hottest day of the period reached 32.2 °C (on 22 June 2010) and the coldest -45.2 °C (on 9 January 2001).
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
SlyudyankaIrkutsk Oblast
- coords
- 51.66°, 103.71°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
-1.2°C
Average daily high
4.3°C
Average daily low
-6.4°C
Annual rainfall
690mm
Sunshine / day
9.0h
Mean relative humidity
75%
Average peak wind
10.8km/h
Seasonal range
36.1°C
Frost days (< 0 °C)
222 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
123 d/yr
Annual snowfall
125.5 cm
Average feels-like high
1.7 °C
Average feels-like low
-9.9 °C
Average peak gust
30.6 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
12.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.29 · 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
32.2 °C
22 June 2010
Coldest day
-45.2 °C
9 January 2001
Wettest day
72 mm
13 July 1942
Windiest day
33.4 km/h
16 May 1990
Strongest gust
94.0 km/h
5 May 2007
Hottest feels-like
36.9 °C
16 July 2004
Coldest feels-like
-50.2 °C
9 January 2001
Snowiest day
38.5 cm
1 October 1974
Sunniest day
16.0 h
31 May 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -10.5 °C | +4.0 °C | 12 mm | +2 mm |
| Feb | -10.0 °C | +0.7 °C | 15 mm | +6 mm |
| Mar | 0.1 °C | +2.5 °C | 23 mm | +1 mm |
| Apr | 10.0 °C | +4.2 °C | 39 mm | -2 mm |
| May | 15.3 °C | +1.8 °C | 48 mm | -20 mm |
| Jun | 21.3 °C | +2.5 °C | 76 mm | -32 mm |
| Jul | 21.7 °C | +1.1 °C | 77 mm | -66 mm |
| Aug | 19.7 °C | +0.7 °C | 165 mm | +38 mm |
| Sep | 15.8 °C | +2.3 °C | 72 mm | -13 mm |
| Oct | 1.6 °C | -4.1 °C | 60 mm | +20 mm |
| Nov | -1.4 °C | +3.5 °C | 37 mm | +13 mm |
| Dec | -12.6 °C | 0.0 °C | 13 mm | -1 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 Slyudyanka?
Slyudyanka has a dry-winter subarctic climate (Köppen Dwc). Over 1940-2025, the average annual temperature is -1.2 °C and it receives 690 mm of precipitation per year.
What is the hottest day ever recorded in Slyudyanka?
The hottest day measured in Slyudyanka between 1940 and 2025 was 22 June 2010, reaching 32.2 °C.
What is the coldest day in Slyudyanka?
The coldest day measured in Slyudyanka between 1940 and 2025 was 9 January 2001, at -45.2 °C.
Does it snow in Slyudyanka?
Yes. Slyudyanka gets on average 125.5 cm of snow per year and has around 222 frost days.
Has the climate of Slyudyanka warmed?
Yes: Slyudyanka warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Slyudyanka?
The wettest day measured in Slyudyanka between 1940 and 2025 was 13 July 1942, with 72 mm of rain in 24 hours.
What was the windiest day in Slyudyanka?
The windiest day measured in Slyudyanka between 1940 and 2025 was 16 May 1990, with winds reaching 33.4 km/h.
What is the warmest month in Slyudyanka?
The warmest month in Slyudyanka is July (15.9 °C on average); the coldest is January (-20.2 °C).
How much does it rain in Slyudyanka?
Slyudyanka receives on average 690 mm of precipitation per year, spread over about 123 rainy days.
Is it sunny in Slyudyanka?
Slyudyanka gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Slyudyanka?
The heaviest 24-hour snowfall measured in Slyudyanka between 1940 and 2025 was 1 October 1974, with 38.5 cm.
Are there tropical nights in Slyudyanka?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Slyudyanka.
What was the most extreme apparent temperature in Slyudyanka?
In Slyudyanka, between 1940 and 2025, the highest apparent temperature reached 36.9 °C on 16 July 2004, and the lowest was -50.2 °C on 9 January 2001.
Compare Slyudyanka with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Slyudyanka