Baykal’sk weather in December

In December, Baykal’sk sees average daytime highs of -8°C and overnight lows near -13°C, with 27 mm of precipitation across 8.9 wet days and about 7.7 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about -6°C in the first days to -11°C by the end. The sky is clear or mostly clear about 10% of the time in December, and the air most often feels dry.

Daylight stretches from about 7 h 54 min at the start of December to 7 h 42 min by month's end. Set against the rest of the year, December is Baykal’sk's 12th-clearest and 8th-windiest month. For the whole year in context, see Baykal’sk's year-round climate.

Daytime high
-8°
10th warmest
Overnight low
-13°
3rd coldest
Precipitation
27 mm
8.9 wet days
Daylight
7 h 36 min
9:11 AM – 4:48 PM
Cloud cover
76%
12th clearest
Wind
10 km/h
8th windiest
Solar energy
0.87 kWh/m²
Travel score
0.0
out of 10

Baykal’sk is town in Slyudyansky District, Irkutsk Oblast, Russia.

Density
19/km²
people per km²
Founded
1961

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about -6°C in the first days to -11°C by the end.

A typical December day in Baykal’sk reaches about -8°C in the afternoon and slips back to -13°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between -15°C and -3°C. Set against its neighbours, December runs about 6°C cooler than November and about 4°C warmer than January.

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

How December really feels in Baykal’sk

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.

Baykal’sk weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-13° / -18°114.16.98.10.0
Feb-10° / -16°103.55.39.60.0
Mar-4° / -10°226.57.611.50.0
Apr / -3°358.77.813.50.1
May10° / 6010.84.515.32.0
Jun16° / 9613.10.416.34.4
Jul18° / 13°15115.5015.95.2
Aug18° / 13°16215.70.114.45.1
Sep13° / 11314.33.512.43.3
Oct / 5510.98.410.40.7
Nov-2° / -7°4412.214.28.60.0
Dec-8° / -13°278.9127.70.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 76%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12278
22179
32080
41981
51882
61882
71783
81684
91783
101882
111882
121882
131882
141981
152080
162179
172179
182278
192476
202575
212674
222773
232872
242971
253070
263268
273367
283466
293664
303763
313862

Chance of precipitation in December

Any precipitationSnow

Baykal’sk gets around 27 mm of rain and snow over 8.9 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 29% and peaks near 39% on the wettest days, and about 12 days bring snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
13948
23948
33848
43848
53747
63647
73646
83546
93445
103344
113243
123142
133041
142940
152839
162738
172737
182636
192535
202535
212434
222433
232333
242332
252332
262232
272231
282131
292130
302030
311929

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
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 7 h 54 min at the start of December to 7 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 8:55 AM to 9:17 AM, and sunset from 4:52 PM to 4:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.98:554:52
27.98:564:51
37.98:574:50
47.98:594:50
57.89:004:50
67.89:014:49
77.89:024:49
87.89:034:49
97.79:054:48
107.79:064:48
117.79:074:48
127.79:084:48
137.79:084:48
147.69:094:48
157.69:104:48
167.69:114:48
177.69:124:48
187.69:124:49
197.69:134:49
207.69:144:49
217.69:144:50
227.69:154:50
237.69:154:51
247.69:154:51
257.69:164:52
267.69:164:52
277.69:164:53
287.69:174:54
297.69:174:55
307.69:174:56
317.79:174:56

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.87 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.87 kWh/m² to a high of 6.2 kWh/m² in May across the year — December's 0.87 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.0Dim
20.9Dim
30.9Dim
40.9Dim
50.9Dim
60.9Dim
70.9Dim
80.9Dim
90.9Dim
100.9Dim
110.9Dim
120.9Dim
130.9Dim
140.8Dim
150.8Dim
160.9Dim
170.9Dim
180.9Dim
190.9Dim
200.9Dim
210.9Dim
220.9Dim
230.9Dim
240.9Dim
250.9Dim
260.9Dim
270.9Dim
280.9Dim
291.0Dim
301.0Dim
311.0Dim
Planning a trip in December

Hazard calendar for Baykal’sk

In seasonPeak

None of Baykal’sk's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Baykal’sk's rainy season runs June–September, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Baykal’sk?

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

0.0
Sightseeing
8th-best month of the year
0.0
Beach & pool
6th-best month of the year

December is a weaker month for outdoor sightseeing in Baykal’sk.

What to pack for Baykal’sk in December

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

In December, Baykal’sk sees daytime highs around -8°C and nights near -13°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 9 days see rain.

a warm layera heavy coatrain gear

UV index in Baykal’sk in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Baykal’sk peaks around July 12 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 12UV 7Dec 19UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr6High
May6High
Jun6High
Jul7High
Aug5High
Sep4Moderate
Oct2Low
Nov1Low
Dec1Low

Air quality in Baykal’sk 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 Baykal’sk is worst in June — around 17 µg/m³ PM2.5 (moderate), about 3.7× the cleanest month (November, 5 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 1916 µg/m³Nov 205 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar9Good
Apr12Good
May11Good
Jun17Moderate
Jul14Moderate
Aug12Good
Sep6Good
Oct5Good
Nov5Good
Dec5Good
Location & terrain

Where is Baykal’sk?

Baykal’sk sits at 51.5°N, 104.1°E, 495 m above sea level, in Russia. The nearest listed city is Slyudyanka, 34 km away.

Topography around Baykal’sk

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

Within 3 km, the terrain around Baykal’sk has significant variations in elevation — a maximum elevation change of 541 m around an average of 537 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,663 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,962 m.

The land around Baykal’sk is covered by trees (67%) and water (23%) within 3 km, trees (51%) and water (44%) within 16 km, and trees (68%) within 80 km.

3 km
541 m
16 km
1,663 m
80 km
1,962 m
treesgrasslandartificial surfacesbare terrainwatermoss and lichen
December weather nearby: Slyudyanka 34 km · Markova 77 km · Shelekhov 78 km · Irkutsk 87 km · Angarsk 117 km · Usol’ye-Sibirskoye 142 km · Gusinoozyorsk 166 km · Cheremkhovo 195 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 Baykal’sk (51.515°, 104.1402°, elevation 495 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).