Onega weather in December

In December, Onega sees average daytime highs of -4°C and overnight lows near -8°C, with 46 mm of precipitation across 12.4 wet days and about 4 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 -6°C by the end. The sky is clear or mostly clear about 2% of the time in December, and the air most often feels dry.

Daylight stretches from about 4 h 36 min at the start of December to 3 h 54 min by month's end. Set against the rest of the year, December is Onega's 12th-clearest and 2nd-windiest month. For the whole year in context, see Onega's year-round climate.

Daytime high
-4°
10th warmest
Overnight low
-8°
3rd coldest
Precipitation
46 mm
12.4 wet days
Daylight
3 h 48 min
10:30 AM – 2:17 PM
Cloud cover
92%
12th clearest
Wind
19 km/h
2nd windiest
Solar energy
0.04 kWh/m²
Travel score
0.0
out of 10

Onega is town in Arkhangelsk Oblast, Russia.

Density
528/km²
people per km²
Founded
1137

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 -6°C by the end.

A typical December day in Onega reaches about -4°C in the afternoon and slips back to -8°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between -12°C and 1°C. Set against its neighbours, December runs about 3°C cooler than November and about 3°C warmer than January.

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

How December really feels in Onega

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.

Onega 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-7° / -11°3710.113.150.0
Feb-7° / -11°278.510.580.0
Mar-3° / -8°308.49.711.20.0
Apr / -3°338.6514.60.0
May / 5210.2217.81.8
Jun14° / 5810.30.1204.0
Jul18° / 12°6511.2019.15.6
Aug16° / 11°7811.70164.9
Sep12° / 8213.70.212.72.7
Oct / 8115.24.59.30.3
Nov-1° / -4°5413.211.16.10.0
Dec-4° / -8°4612.414.340.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 4% of December, with mostly cloudy or overcast conditions the remaining 94%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1694
2694
3694
4694
5595
6595
7595
8595
9595
10496
11595
12595
13694
14694
15694
16694
17694
18694
19694
20793
21793
22694
23694
24694
25694
26694
27694
28694
29694
30595
31595

Chance of precipitation in December

Any precipitationSnow

Onega gets around 46 mm of rain and snow over 12.4 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 39% and peaks near 44% on the wettest days, and about 14 days bring snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14444
24444
34344
44344
54244
64245
74245
84145
94145
104146
114146
124046
134046
144047
154047
163947
173947
183847
193847
203846
213846
223746
233746
243745
253644
263544
273543
283443
293443
303442
313442

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 19 km/h in December.

Across December, daily wind ranges from about 18 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1419light breeze
1519light breeze
1619light breeze
1719light breeze
1819light breeze
1919light breeze
2019light breeze
2119light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 4 h 36 min at the start of December to 3 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over December. Sunrise moves from 9:58 AM to 10:34 AM, and sunset from 2:36 PM to 2:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
14.69:582:36
24.610:012:34
34.510:042:32
44.410:062:31
54.310:092:29
64.310:112:27
74.210:142:26
84.110:162:24
94.110:182:23
104.010:202:22
114.010:222:21
123.910:242:20
133.910:262:19
143.810:272:18
153.810:292:18
163.810:302:17
173.810:322:17
183.710:332:17
193.710:342:17
203.710:342:17
213.710:352:17
223.710:362:17
233.710:362:18
243.710:362:19
253.710:362:20
263.710:362:20
273.810:362:22
283.810:362:23
293.810:352:24
303.810:352:26
313.910:342:27

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.04 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.04 kWh/m² to a high of 5.61 kWh/m² in June across the year — December's 0.04 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
70.1Dim
80.1Dim
90.1Dim
100.1Dim
110.1Dim
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
280.1Dim
290.1Dim
300.1Dim
310.1Dim
Planning a trip in December

Is December a good time to visit Onega?

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

0.0
Sightseeing
7th-best month of the year
0.0
Beach & pool
5th-best month of the year

December is a weaker month for outdoor sightseeing in Onega.

What to pack for Onega in December

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

In December, Onega sees daytime highs around -4°C and nights near -8°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 12 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Onega in December

The nearest coast averages about -1°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 23 km away) is warmest in August at about 13°C and coldest in February near -1°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

-5°0°5°10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan-1Bracing
Feb-1Bracing
Mar-1Bracing
Apr0Bracing
May3Bracing
Jun6Bracing
Jul12Bracing
Aug13Bracing
Sep11Bracing
Oct6Bracing
Nov1Bracing
Dec-1Bracing

UV index in Onega 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 Onega peaks around July 12 at about 5 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJul 12UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb0Low
Mar1Low
Apr2Moderate
May4Moderate
Jun4Moderate
Jul5Moderate
Aug3Moderate
Sep2Low
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Onega?

Onega sits at 63.9°N, 38.1°E, 21 m above sea level, in Russia. The nearest listed city is Severodvinsk, 111 km away.

Topography around Onega

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

Within 3 km, the terrain around Onega has only modest variations in elevation — a maximum elevation change of 111 m around an average of 15 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 163 m; within 80 km, significant variations in elevation — a maximum elevation change of 362 m.

The land around Onega is covered by trees (47%) and water (24%) within 3 km, trees (54%) and water (24%) within 16 km, and trees (60%) and water (21%) within 80 km.

3 km
111 m
16 km
163 m
80 km
362 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Severodvinsk 111 km · Yagry 113 km · Isakogorka 138 km · Arkhangel’sk 138 km · Novodvinsk 143 km · Mirnyy 169 km · Segezha 186 km · Medvezh’yegorsk 212 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 Onega (63.9057°, 38.0994°, elevation 21 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).