Lom weather in December

In December, Lom sees average daytime highs of 5°C and overnight lows near -1°C, with 44 mm of precipitation across 7.8 wet days and about 8.8 hours of daylight. It is the 11th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 7°C in the first days to 4°C by the end. The sky is clear or mostly clear about 28% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 hours at the start of December to 8 h 48 min by month's end. Set against the rest of the year, December is Lom's 11th-clearest and 10th-windiest month. For the whole year in context, see Lom's year-round climate.

Daytime high
11th warmest
Overnight low
-1°
2nd coldest
Precipitation
44 mm
7.8 wet days
Daylight
8 h 42 min
8:01 AM – 4:45 PM
Cloud cover
64%
11th clearest
Wind
9 km/h
10th windiest
Solar energy
1.36 kWh/m²
Travel score
0.2
out of 10

Lom is city in Lom municipality, Montana oblast, Bulgaria.

Density
356/km²
people per km²

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 7°C in the first days to 4°C by the end.

A typical December day in Lom reaches about 5°C in the afternoon and slips back to -1°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between -1°C and 12°C. Set against its neighbours, December runs about 6°C cooler than November and about 1°C warmer than January.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
171
271
371
471
570
660
760
860
960
1060
116-1
126-1
135-1
145-1
155-1
165-1
175-1
185-1
195-2
205-2
215-2
225-2
234-2
244-2
254-2
264-2
274-2
284-2
294-2
304-3
314-3

How December really feels in Lom

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
wind chill below the day's low

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

Lom weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°4074.49.10.0
Feb / -1°367.23.210.21.1
Mar14° / 477.71.811.64.1
Apr20° / 508.30.113.26.4
May25° / 14°519.4014.57.0
Jun30° / 18°488.8015.25.6
Jul32° / 19°456.6014.94.6
Aug32° / 19°294.8013.84.8
Sep26° / 15°415.7012.37.3
Oct19° / 426.6010.86.6
Nov11° / 406.91.29.53.1
Dec / -1°447.83.38.80.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23862
33862
43862
53862
63862
74060
84060
94060
104060
114060
124159
134060
144060
154159
164159
174159
184159
194258
204258
214258
224258
234258
244258
254357
264357
274456
284456
294456
304456
314555

Chance of precipitation in December

Any precipitationSnow

Lom gets around 44 mm of rain and snow over 7.8 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 25% and peaks near 29% on the wettest days, and about 3 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1298
2298
3288
4288
5288
6278
7278
8269
9269
10259
112510
122510
132510
142511
152411
162411
172412
182412
192412
202413
212513
222513
232513
242413
252413
262413
272413
282413
292413
302313
312313

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 9 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 hours at the start of December to 8 h 48 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 7:48 AM to 8:07 AM, and sunset from 4:46 PM to 4:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.07:484:46
28.97:494:46
38.97:504:45
48.97:514:45
58.97:524:45
68.97:534:45
78.87:544:45
88.87:554:45
98.87:564:45
108.87:564:45
118.87:574:45
128.87:584:45
138.87:594:45
148.88:004:45
158.78:004:45
168.78:014:45
178.78:024:46
188.78:024:46
198.78:034:46
208.78:034:47
218.78:044:47
228.78:044:48
238.78:054:48
248.78:054:49
258.78:064:49
268.78:064:50
278.78:064:50
288.78:074:51
298.78:074:52
308.88:074:52
318.88:074:53

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.36 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.36 kWh/m² to a high of 6.4 kWh/m² in June across the year — December's 1.36 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.4Dim
21.3Dim
31.3Dim
41.3Dim
51.3Dim
61.3Dim
71.3Dim
81.3Dim
91.3Dim
101.3Dim
111.4Dim
121.4Dim
131.4Dim
141.4Dim
151.4Dim
161.4Dim
171.4Dim
181.4Dim
191.4Dim
201.4Dim
211.4Dim
221.4Dim
231.4Dim
241.4Dim
251.4Dim
261.4Dim
271.4Dim
281.4Dim
291.4Dim
301.5Dim
311.5Dim
Planning a trip in December

Is December a good time to visit Lom?

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

0.2
Sightseeing
11th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Lom.

What to pack for Lom in December

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

In December, Lom sees daytime highs around 5°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat. About 8 days see rain.

a warm layera heavy coat

UV index in Lom 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 Lom peaks around June 23 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighHighVery highHighModerateLowJun 23UV 8Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr8Very high
May6High
Jun8Very high
Jul8Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Lom?

Lom sits at 43.8°N, 23.2°E, 37 m above sea level, in Bulgaria. The nearest listed city is Băileşti, 22 km away.

CalafatVidinMontanaBerkovitsaCraiovaNegotinVratsa

Topography around Lom

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

Within 3 km, the terrain around Lom has only modest variations in elevation — a maximum elevation change of 167 m around an average of 51 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 168 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,120 m.

The land around Lom is covered by trees (33%) and water (20%) within 3 km, cropland (65%) within 16 km, and cropland (51%) and trees (29%) within 80 km.

3 km
167 m
16 km
168 m
80 km
2,120 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Băileşti 22 km · Calafat 30 km · Vidin 34 km · Montana 47 km · Berkovitsa 67 km · Craiova 70 km · Negotin 72 km · Vratsa 74 km

Bulgaria travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 23% of US
price level, 2025
GDP per capita
$20,328
2025
Happiness
5.7 / 10
World Happiness, 2025
Safe drinking water
96%
of population, 2024
Homicide rate
1.1
per 100k, 2023
Road deaths
9.2
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 594
Religion
Christian 65%Muslim 10%none 5%other 0%

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 Lom (43.8317°, 23.2379°, elevation 37 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).