Mirny weather in December

In December, Mirny sees average daytime highs of -27°C and overnight lows near -33°C, with 6 mm of precipitation across 2 wet days and about 4.7 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near -27°C through the month. The sky is clear or mostly clear about 3% of the time in December, and the air most often feels dry.

Daylight stretches from about 5 h 12 min at the start of December to 4 h 36 min by month's end. Set against the rest of the year, December is Mirny's 11th-clearest and 7th-windiest month. For the whole year in context, see Mirny's year-round climate.

Daytime high
-27°
12th warmest
Overnight low
-33°
1st coldest
Precipitation
6 mm
2 wet days
Daylight
4 h 30 min
11:04 AM – 3:36 PM
Cloud cover
92%
11th clearest
Wind
10 km/h
7th windiest
Solar energy
0.12 kWh/m²
Travel score
0.0
out of 10

Mirny is town and the administrative center of Mirninsky District of the Sakha Republic, Russia.

Density
328/km²
people per km²
Founded
1955

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near -27°C through the month.

A typical December day in Mirny reaches about -27°C in the afternoon and slips back to -33°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between -40°C and -14°C. Set against its neighbours, December runs about 9°C cooler than November and on par with January.

-50°-40°-30°-20°-10°151015202531
Avg high (°C)Avg low (°C)
1-26-32
2-26-33
3-26-33
4-27-33
5-27-33
6-27-33
7-27-33
8-27-34
9-27-34
10-27-34
11-27-34
12-27-34
13-27-34
14-27-34
15-27-34
16-27-34
17-27-34
18-27-34
19-27-34
20-27-34
21-27-33
22-27-33
23-27-33
24-27-33
25-27-33
26-26-33
27-26-33
28-26-33
29-27-33
30-27-33
31-27-33

How December really feels in Mirny

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
31
31 feel bitter (≤ -10°C)

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Mirny weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-27° / -33°51.63.75.60.0
Feb-22° / -30°41.42.78.20.0
Mar-10° / -22°83.34.911.30.0
Apr / -11°165.15.714.40.0
May10° / -1°338.2317.42.2
Jun20° / 509.60.219.36.1
Jul22° / 12°488.7018.56.8
Aug19° / 518.7015.85.9
Sep / 358.32.612.61.8
Oct-3° / -10°257.68.59.50.0
Nov-18° / -25°134.66.66.50.0
Dec-27° / -33°624.24.70.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 4% of December, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1595
2694
3694
4694
5694
6694
7694
8694
9694
10694
11694
12694
13793
14793
15793
16793
17793
18793
19793
20793
21793
22793
23892
24892
25892
26892
27892
28892
29892
30793
31793

Chance of precipitation in December

Any precipitationSnow

Mirny gets around 6 mm of rain and snow over 2 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 7% and peaks near 8% on the wettest days, and about 4 days bring snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1815
2814
3714
4714
5714
6714
7714
8714
9714
10714
11714
12714
13714
14714
15614
16613
17613
18613
19613
20613
21613
22613
23613
24613
25614
26614
27614
28614
29614
30614
31614

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 10 km/h in December.

Across December, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 5 h 12 min at the start of December to 4 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over December. Sunrise moves from 10:37 AM to 11:09 AM, and sunset from 3:51 PM to 3:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
15.210:373:51
25.210:393:49
35.110:423:48
45.010:443:46
55.010:463:45
64.910:483:44
74.910:503:43
84.810:523:41
94.810:543:40
104.710:563:40
114.710:573:39
124.710:593:38
134.611:003:37
144.611:023:37
154.611:033:37
164.511:043:36
174.511:053:36
184.511:063:36
194.511:073:36
204.511:083:36
214.511:093:37
224.511:093:37
234.511:103:38
244.511:103:38
254.511:103:39
264.511:103:40
274.511:103:41
284.511:103:42
294.611:103:43
304.611:093:44
314.611:093:46

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.12 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.12 kWh/m² to a high of 5.88 kWh/m² in June across the year — December's 0.12 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.2Dim
20.2Dim
30.2Dim
40.2Dim
50.2Dim
60.2Dim
70.1Dim
80.1Dim
90.1Dim
100.1Dim
110.1Dim
120.1Dim
130.1Dim
140.1Dim
150.1Dim
160.1Dim
170.1Dim
180.1Dim
190.1Dim
200.1Dim
210.1Dim
220.1Dim
230.1Dim
240.1Dim
250.1Dim
260.1Dim
270.1Dim
280.1Dim
290.1Dim
300.1Dim
310.1Dim
Planning a trip in December

Is December a good time to visit Mirny?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.0
Sightseeing
6th-best month of the year
0.0
Beach & pool
6th-best month of the year

December is a weaker month for outdoor sightseeing in Mirny.

What to pack for Mirny in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Mirny sees daytime highs around -27°C and nights near -33°C. Pack a warm layer and a heavy coat.

a warm layera heavy coat

UV index in Mirny in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 0. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mirny peaks around May 23 at about 4 (moderate) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowMay 23UV 4Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb0Low
Mar1Low
Apr3Moderate
May4Moderate
Jun4Moderate
Jul3Moderate
Aug4Moderate
Sep2Low
Oct1Low
Nov0Low
Dec0Low

Air quality in Mirny in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Mirny is worst in July — around 53 µg/m³ PM2.5 (poor), about 58.9× the cleanest month (December, 1 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodPoorModerateGoodJul 2151 µg/m³Dec 201 µg/m³
PM2.5 (µg/m³)Level
Jan1Good
Feb2Good
Mar5Good
Apr8Good
May8Good
Jun13Moderate
Jul53Poor
Aug44Poor
Sep15Moderate
Oct7Good
Nov2Good
Dec1Good
Location & terrain

Where is Mirny?

Mirny sits at 62.5°N, 114.0°E, 352 m above sea level, in Russia. The nearest listed city is Lensk, 208 km away.

BodayboAldanUst’-KutUst’-IlimskSeverobaykal’sk

Topography around Mirny

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mirny.

Within 3 km, the terrain around Mirny has significant variations in elevation — a maximum elevation change of 527 m around an average of 336 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 562 m; within 80 km, significant variations in elevation — a maximum elevation change of 563 m.

The land around Mirny is covered by trees (42%), artificial surfaces (25%) and bare terrain (22%) within 3 km, trees (90%) within 16 km, and trees (92%) within 80 km.

3 km
527 m
16 km
562 m
80 km
563 m
treesgrasslandartificial surfacesbare terrainwatermoss and lichen
December weather nearby: Lensk 208 km · Aykhal 396 km · Udachny 439 km · Bodaybo 521 km · Aldan 760 km · Ust’-Kut 785 km · Ust’-Ilimsk 800 km · Severobaykal’sk 811 km

Russia travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 32% of US
price level, 2025
GDP per capita
$17,547
2025
Happiness
5.8 / 10
World Happiness, 2025
Safe drinking water
76%
of population, 2024
Homicide rate
6.8
per 100k, 2021
Road deaths
12
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 521
Religion
other Christian 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Mirny (62.5353°, 113.9611°, elevation 352 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).