Udachny climate — normals and trends
Udachny (Russia) has a dry-winter subarctic climate (Dwc) under the Köppen-Geiger classification. Its mean annual temperature is -10.6 °C and it receives 341 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 (14.9 °C on average) and the coldest is January (-35.4 °C). Rainfall peaks in July.
Udachny averages 258 frost days, 1 hot days (≥ 30 °C) and 77 rainy days per year.
Udachny has warmed by +2.5 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 263 to 253 per year over the period.
The hottest day of the period reached 32.9 °C (on 15 July 2011) and the coldest -62.5 °C (on 1 January 1959).
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
UdachnySakha
- coords
- 66.43°, 112.40°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
-10.6°C
Average daily high
-6.5°C
Average daily low
-15.1°C
Annual rainfall
341mm
Sunshine / day
7.4h
Mean relative humidity
72%
Average peak wind
13.0km/h
Seasonal range
50.3°C
Frost days (< 0 °C)
258 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
77 d/yr
Annual snowfall
96.0 cm
Average feels-like high
-10.7 °C
Average feels-like low
-19.5 °C
Average peak gust
28.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
8.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.24 · 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
32.9 °C
15 July 2011
Coldest day
-62.5 °C
1 January 1959
Wettest day
70 mm
5 August 1944
Windiest day
38.2 km/h
29 October 1968
Strongest gust
96.8 km/h
2 December 1993
Hottest feels-like
34.0 °C
15 July 1999
Coldest feels-like
-68.0 °C
1 January 1959
Snowiest day
18.7 cm
27 May 2020
Sunniest day
22.3 h
21 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 | -28.5 °C | +3.5 °C | 10 mm | +6 mm |
| Feb | -22.5 °C | +5.6 °C | 7 mm | +4 mm |
| Mar | -14.3 °C | +1.1 °C | 12 mm | +4 mm |
| Apr | -2.8 °C | +1.4 °C | 35 mm | +13 mm |
| May | 6.4 °C | +1.4 °C | 54 mm | +14 mm |
| Jun | 15.4 °C | -0.3 °C | 57 mm | -1 mm |
| Jul | 20.7 °C | +1.1 °C | 38 mm | -28 mm |
| Aug | 17.3 °C | +1.9 °C | 45 mm | -14 mm |
| Sep | 4.4 °C | -1.7 °C | 46 mm | +6 mm |
| Oct | -4.7 °C | +2.3 °C | 11 mm | -14 mm |
| Nov | -21.5 °C | +2.1 °C | 5 mm | -5 mm |
| Dec | -33.0 °C | -3.3 °C | 3 mm | -2 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 Udachny?
Udachny has a dry-winter subarctic climate (Köppen Dwc). Over 1940-2025, the average annual temperature is -10.6 °C and it receives 341 mm of precipitation per year.
What is the hottest day ever recorded in Udachny?
The hottest day measured in Udachny between 1940 and 2025 was 15 July 2011, reaching 32.9 °C.
What is the coldest day in Udachny?
The coldest day measured in Udachny between 1940 and 2025 was 1 January 1959, at -62.5 °C.
Does it snow in Udachny?
Yes. Udachny gets on average 96.0 cm of snow per year and has around 258 frost days.
Has the climate of Udachny warmed?
Yes: Udachny warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Udachny?
The wettest day measured in Udachny between 1940 and 2025 was 5 August 1944, with 70 mm of rain in 24 hours.
What was the windiest day in Udachny?
The windiest day measured in Udachny between 1940 and 2025 was 29 October 1968, with winds reaching 38.2 km/h.
What is the warmest month in Udachny?
The warmest month in Udachny is July (14.9 °C on average); the coldest is January (-35.4 °C).
How much does it rain in Udachny?
Udachny receives on average 341 mm of precipitation per year, spread over about 77 rainy days.
Is it sunny in Udachny?
Udachny 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 Udachny?
The heaviest 24-hour snowfall measured in Udachny between 1940 and 2025 was 27 May 2020, with 18.7 cm.
Are there tropical nights in Udachny?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Udachny.
What was the most extreme apparent temperature in Udachny?
In Udachny, between 1940 and 2025, the highest apparent temperature reached 34.0 °C on 15 July 1999, and the lowest was -68.0 °C on 1 January 1959.
Compare Udachny with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Udachny