Kostomuksha weather in December

In December, Kostomuksha sees average daytime highs of -5°C and overnight lows near -10°C, with 42 mm of precipitation across 11 wet days and about 3.5 hours of daylight. It is the 10th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about -3°C in the first days to -7°C by the end. The sky is clear or mostly clear about 5% of the time in December, and the air most often feels dry.

Daylight stretches from about 4 h 18 min at the start of December to 3 h 30 min by month's end. Set against the rest of the year, December is Kostomuksha's 11th-clearest and 1st-windiest month. For the whole year in context, see Kostomuksha's year-round climate.

Daytime high
-5°
10th warmest
Overnight low
-10°
3rd coldest
Precipitation
42 mm
11 wet days
Daylight
3 h 18 min
11:14 AM – 2:34 PM
Cloud cover
90%
11th clearest
Wind
13 km/h
1st windiest
Solar energy
0.03 kWh/m²
Travel score
0.0
out of 10

Kostomuksha is human settlement in Kostomuksha Municipal Okrug, Republic of Karelia, Russia.

Density
2,009/km²
people per km²
Founded
1977

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 -3°C in the first days to -7°C by the end.

A typical December day in Kostomuksha reaches about -5°C in the afternoon and slips back to -10°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between -14°C and 1°C. Set against its neighbours, December runs about 4°C cooler than November and about 3°C warmer than January.

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

How December really feels in Kostomuksha

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.

Kostomuksha weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-8° / -13°32910.94.70.0
Feb-7° / -13°267.89.77.80.0
Mar-2° / -9°318.41011.20.0
Apr / -4°338.4614.60.3
May12° / 5811.32.6182.8
Jun17° / 6912.20.220.54.9
Jul20° / 11°8113.4019.45.5
Aug17° / 7612.7016.25.0
Sep12° / 6411.50.312.72.7
Oct / -0°5711.75.19.30.2
Nov-1° / -5°4710.910.15.90.0
Dec-5° / -10°421112.43.50.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% 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 91%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1793
2793
3793
4793
5793
6892
7892
8892
9991
10991
11991
12991
13991
141090
151090
161090
171090
181090
191090
201090
211090
221090
23991
24991
25991
261090
271090
281090
291090
301090
311090

Chance of precipitation in December

Any precipitationSnow

Kostomuksha gets around 42 mm of rain and snow over 11 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 35% and peaks near 37% on the wettest days, and about 12 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13739
23739
33739
43639
53639
63539
73539
83539
93439
103439
113439
123439
133439
143439
153539
163539
173539
183539
193539
203539
213539
223539
233539
243539
253539
263538
273438
283437
293337
303237
313236

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 13 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 4 h 18 min at the start of December to 3 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over December. Sunrise moves from 10:39 AM to 11:17 AM, and sunset from 2:56 PM to 2:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
14.310:392:56
24.210:422:54
34.110:452:52
44.010:482:50
54.010:502:48
63.910:532:46
73.810:562:44
83.710:582:42
93.711:002:41
103.611:032:40
113.611:052:38
123.511:072:37
133.511:092:36
143.411:112:35
153.411:122:34
163.311:142:34
173.311:152:33
183.311:172:33
193.311:182:33
203.211:182:33
213.211:192:33
223.211:202:34
233.211:202:34
243.211:202:35
253.311:202:36
263.311:202:37
273.311:202:38
283.311:202:39
293.411:192:41
303.411:182:43
313.511:172:44

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.03 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.03 kWh/m² to a high of 5.04 kWh/m² in June across the year — December's 0.03 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.1Dim
20.1Dim
30.1Dim
40.1Dim
50.1Dim
60.1Dim
70.0Dim
80.0Dim
90.0Dim
100.0Dim
110.0Dim
120.0Dim
130.0Dim
140.0Dim
150.0Dim
160.0Dim
170.0Dim
180.0Dim
190.0Dim
200.0Dim
210.0Dim
220.0Dim
230.0Dim
240.0Dim
250.0Dim
260.0Dim
270.0Dim
280.0Dim
290.0Dim
300.0Dim
310.0Dim
Planning a trip in December

Is December a good time to visit Kostomuksha?

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 Kostomuksha.

What to pack for Kostomuksha in December

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

In December, Kostomuksha sees daytime highs around -5°C and nights near -10°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 11 days see rain.

a warm layera heavy coatrain gear

UV index in Kostomuksha 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 Kostomuksha peaks around July 15 at about 5 (moderate) — a little sun protection helps at midday. It bottoms out near December 17 at about 0 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJul 15UV 5Dec 17UV 0
UV index (midday)Level
Jan0Low
Feb0Low
Mar1Low
Apr2Moderate
May4Moderate
Jun4Moderate
Jul5Moderate
Aug4Moderate
Sep2Low
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Kostomuksha?

Kostomuksha sits at 64.6°N, 30.6°E, 212 m above sea level, in Russia. The nearest listed city is Kajaani, 142 km away.

Topography around Kostomuksha

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

Within 3 km, the terrain around Kostomuksha has only modest variations in elevation — a maximum elevation change of 75 m around an average of 207 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 313 m; within 80 km, significant variations in elevation — a maximum elevation change of 312 m.

The land around Kostomuksha is covered by trees (69%) within 3 km, trees (76%) within 16 km, and trees (77%) within 80 km.

3 km
75 m
16 km
313 m
80 km
312 m
treesgrasslandartificial surfacesbare terrainwaterwetland
December weather nearby: Kajaani 142 km · Iisalmi 199 km · Segezha 203 km · Kontiolahti 205 km · Siilinjärvi 218 km · Joensuu 223 km · Kuopio 235 km · Oulu 247 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 Kostomuksha (64.571°, 30.5767°, elevation 212 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).