Chełm weather in December

In December, Chełm sees average daytime highs of 1°C and overnight lows near -3°C, with 38 mm of precipitation across 9.4 wet days and about 7.8 hours of daylight. It is the 11th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 2°C in the first days to 1°C by the end. The sky is clear or mostly clear about 9% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 hours at the start of December to 7 h 42 min by month's end. Set against the rest of the year, December is Chełm's 12th-clearest and 2nd-windiest month. For the whole year in context, see Chełm's year-round climate.

Daytime high
11th warmest
Overnight low
-3°
3rd coldest
Precipitation
38 mm
9.4 wet days
Daylight
7 h 42 min
7:32 AM – 3:13 PM
Cloud cover
82%
12th clearest
Wind
15 km/h
2nd windiest
Solar energy
0.6 kWh/m²
Travel score
0.0
out of 10

Chełm is city with powiat rights in the Lublin Voivodeship in south-eastern Poland.

Air quality
Elevated
PM2.5 18.2 µg/m³ · 2019
Density
1,707/km²
people per km²
Founded
1237

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 2°C in the first days to 1°C by the end.

A typical December day in Chełm reaches about 1°C in the afternoon and slips back to -3°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between -5°C and 7°C. Set against its neighbours, December runs about 5°C cooler than November and about 1°C warmer than January.

-15°-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
13-2
22-2
32-2
42-2
52-2
62-2
72-2
82-2
92-2
102-2
112-2
122-3
131-3
141-3
151-3
161-3
171-3
181-3
191-3
201-3
211-3
221-3
231-4
241-4
251-4
261-4
271-4
281-4
291-4
301-4
310-4

How December really feels in Chełm

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.

Chełm weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°369.66.38.20.0
Feb / -4°359.66.69.60.0
Mar / -1°4310.73.911.50.7
Apr14° / 479.71.113.53.9
May19° / 7212.7015.35.7
Jun22° / 12°7812.3016.26.2
Jul24° / 14°8613.1015.96.4
Aug24° / 13°669.9014.46.9
Sep19° / 639.5012.45.9
Oct13° / 479.50.410.43.4
Nov / 389.32.78.70.6
Dec / -3°389.45.87.80.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 7% of December, with mostly cloudy or overcast conditions the remaining 84%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21882
31783
41783
51684
61585
71585
81585
91486
101387
111387
121387
131288
141486
151486
161486
171486
181486
191585
201684
211684
221783
231783
241783
251882
261882
271882
281882
291882
301882
311783

Chance of precipitation in December

Any precipitationSnow

Chełm gets around 38 mm of rain and snow over 9.4 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 31% and peaks near 34% on the wettest days, and about 6 days bring snow. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
12615
22715
32716
42816
52816
62917
72917
83018
93018
103018
113019
123019
133019
143119
153120
163120
173120
183120
193120
203120
213120
223120
233120
243120
253220
263220
273320
283320
293420
303420
313420

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 15 km/h in December.

Across December, daily wind ranges from about 15 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 hours 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 18 minutes over December. Sunrise moves from 7:16 AM to 7:38 AM, and sunset from 3:16 PM to 3:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.07:163:16
28.07:173:15
37.97:183:15
47.97:203:14
57.97:213:14
67.97:223:14
77.87:233:13
87.87:243:13
97.87:253:13
107.87:263:13
117.87:273:13
127.77:283:13
137.77:293:13
147.77:303:13
157.77:313:13
167.77:323:13
177.77:323:13
187.77:333:13
197.77:343:14
207.77:343:14
217.77:353:14
227.77:353:15
237.77:363:15
247.77:363:16
257.77:373:16
267.77:373:17
277.77:373:18
287.77:373:19
297.77:373:19
307.77:373:20
317.77:383:21

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.6 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.6 kWh/m² to a high of 5.58 kWh/m² in June across the year — December's 0.6 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.7Dim
20.7Dim
30.7Dim
40.7Dim
50.7Dim
60.6Dim
70.6Dim
80.6Dim
90.6Dim
100.6Dim
110.6Dim
120.6Dim
130.6Dim
140.6Dim
150.6Dim
160.6Dim
170.6Dim
180.6Dim
190.6Dim
200.6Dim
210.6Dim
220.6Dim
230.6Dim
240.6Dim
250.6Dim
260.6Dim
270.6Dim
280.6Dim
290.6Dim
300.6Dim
310.6Dim
Planning a trip in December

Is December a good time to visit Chełm?

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

0.0
Sightseeing
10th-best month of the year
0.0
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Chełm.

What to pack for Chełm in December

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

In December, Chełm sees daytime highs around 1°C and nights near -3°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 Chełm 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 Chełm peaks around July 18 at about 6 (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 18UV 6Dec 19UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5High
Jun6High
Jul7High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Chełm 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 Chełm is worst in July — around 24 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 11 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Chełm's WHO annual average of 18.2 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJul 1224 µg/m³Dec 1711 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar22Moderate
Apr21Moderate
May21Moderate
Jun23Moderate
Jul24Moderate
Aug21Moderate
Sep18Moderate
Oct14Moderate
Nov13Moderate
Dec11Good
Location & terrain

Where is Chełm?

Chełm sits at 51.1°N, 23.5°E, 177 m above sea level, in Poland. The nearest listed city is Krasnystaw, 27 km away.

ŁęcznaHrubieszówZamośćŚwidnikLublinNovovolynskVolodymyr-Volynskyi

Topography around Chełm

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

Within 3 km, the terrain around Chełm has only modest variations in elevation — a maximum elevation change of 66 m around an average of 192 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 126 m; within 80 km, significant variations in elevation — a maximum elevation change of 254 m.

The land around Chełm is covered by artificial surfaces (30%), trees (28%) and grassland (27%) within 3 km, cropland (49%) and trees (28%) within 16 km, and cropland (47%) and trees (35%) within 80 km.

3 km
66 m
16 km
126 m
80 km
254 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Krasnystaw 27 km · Łęczna 45 km · Hrubieszów 48 km · Zamość 49 km · Świdnik 55 km · Lublin 64 km · Novovolynsk 67 km · Volodymyr-Volynskyi 68 km

Poland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 52% of US
price level, 2025
GDP per capita
$28,420
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
9.4
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 600
Religion
Roman Catholic 71%refused to answer 21%no religion 7%

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 Chełm (51.1431°, 23.4716°, elevation 177 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).