Olyokminsk climate — normals and trends
Olyokminsk (Russia) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is -5.6 °C and it receives 338 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 (19.1 °C on average) and the coldest is January (-30.9 °C). Rainfall peaks in July.
Olyokminsk averages 230 frost days, 7 hot days (≥ 30 °C) and 80 rainy days per year.
Olyokminsk has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The hottest day of the period reached 37.3 °C (on 6 August 1986) and the coldest -56.9 °C (on 13 January 1994).
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
OlyokminskSakha
- coords
- 60.37°, 120.42°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
-5.6°C
Average daily high
-0.9°C
Average daily low
-10.5°C
Annual rainfall
338mm
Sunshine / day
8.2h
Mean relative humidity
70%
Average peak wind
12.2km/h
Seasonal range
50.0°C
Frost days (< 0 °C)
230 d/yr
Hot days (≥ 30 °C)
7 d/yr
Rainy days (≥ 1 mm)
80 d/yr
Annual snowfall
84.5 cm
Average feels-like high
-4.4 °C
Average feels-like low
-14.4 °C
Average peak gust
26.2 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.12 · 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
37.3 °C
6 August 1986
Coldest day
-56.9 °C
13 January 1994
Wettest day
77 mm
7 July 2022
Windiest day
36.8 km/h
18 April 1970
Strongest gust
83.5 km/h
7 July 2022
Hottest feels-like
38.1 °C
12 July 2020
Coldest feels-like
-61.3 °C
13 January 1994
Snowiest day
13.0 cm
5 May 1979
Sunniest day
18.0 h
18 June 1940
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 | -25.2 °C | +2.4 °C | 10 mm | -0 mm |
| Feb | -19.3 °C | +3.2 °C | 7 mm | +0 mm |
| Mar | -8.8 °C | +0.5 °C | 28 mm | +19 mm |
| Apr | 4.5 °C | +2.4 °C | 28 mm | +12 mm |
| May | 13.4 °C | +1.0 °C | 54 mm | +17 mm |
| Jun | 21.1 °C | -0.2 °C | 39 mm | -6 mm |
| Jul | 23.7 °C | -0.7 °C | 81 mm | +18 mm |
| Aug | 22.1 °C | +1.2 °C | 29 mm | -27 mm |
| Sep | 12.7 °C | +1.1 °C | 42 mm | -1 mm |
| Oct | -1.8 °C | -1.1 °C | 14 mm | -9 mm |
| Nov | -16.9 °C | -0.1 °C | 29 mm | +11 mm |
| Dec | -32.0 °C | -5.6 °C | 6 mm | -7 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 Olyokminsk?
Olyokminsk has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is -5.6 °C and it receives 338 mm of precipitation per year.
What is the hottest day ever recorded in Olyokminsk?
The hottest day measured in Olyokminsk between 1940 and 2025 was 6 August 1986, reaching 37.3 °C.
What is the coldest day in Olyokminsk?
The coldest day measured in Olyokminsk between 1940 and 2025 was 13 January 1994, at -56.9 °C.
Does it snow in Olyokminsk?
Yes. Olyokminsk gets on average 84.5 cm of snow per year and has around 230 frost days.
Has the climate of Olyokminsk warmed?
Yes: Olyokminsk warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Olyokminsk?
The wettest day measured in Olyokminsk between 1940 and 2025 was 7 July 2022, with 77 mm of rain in 24 hours.
What was the windiest day in Olyokminsk?
The windiest day measured in Olyokminsk between 1940 and 2025 was 18 April 1970, with winds reaching 36.8 km/h.
What is the warmest month in Olyokminsk?
The warmest month in Olyokminsk is July (19.1 °C on average); the coldest is January (-30.9 °C).
How much does it rain in Olyokminsk?
Olyokminsk receives on average 338 mm of precipitation per year, spread over about 80 rainy days.
Is it sunny in Olyokminsk?
Olyokminsk gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Olyokminsk?
The heaviest 24-hour snowfall measured in Olyokminsk between 1940 and 2025 was 5 May 1979, with 13.0 cm.
Are there tropical nights in Olyokminsk?
Yes: Olyokminsk has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Olyokminsk?
In Olyokminsk, between 1940 and 2025, the highest apparent temperature reached 38.1 °C on 12 July 2020, and the lowest was -61.3 °C on 13 January 1994.
Compare Olyokminsk with another city
Pick a second city: its normals will be set against these, indicator by indicator.