Ciechanów weather in December

In December, Ciechanów sees average daytime highs of 2°C and overnight lows near -3°C, with 43 mm of precipitation across 9.8 wet days and about 7.4 hours of daylight. It is the 11th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 3°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 7 h 42 min at the start of December to 7 h 24 min by month's end. Set against the rest of the year, December is Ciechanów's 11th-clearest and 3rd-windiest month. For the whole year in context, see Ciechanów's year-round climate.

Daytime high
11th warmest
Overnight low
-3°
3rd coldest
Precipitation
43 mm
9.8 wet days
Daylight
7 h 24 min
7:53 AM – 3:15 PM
Cloud cover
82%
11th clearest
Wind
15 km/h
3rd windiest
Solar energy
0.49 kWh/m²
Travel score
0.0
out of 10

Ciechanów is city and urban gmina of Poland.

Air quality
Moderate
PM10 30.9 µg/m³ · 2014
Density
1,407/km²
people per km²
Founded
1065

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 1°C by the end.

A typical December day in Ciechanów reaches about 2°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 -4°C and 7°C. Set against its neighbours, December runs about 4°C cooler than November and about 1°C warmer than January.

-15°-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
13-1
23-1
33-1
42-1
52-1
62-2
72-2
82-2
92-2
102-2
112-2
122-2
132-2
142-2
152-2
162-3
171-3
181-3
191-3
201-3
211-3
221-3
231-3
241-3
251-3
261-3
271-4
281-4
291-4
301-4
311-4

How December really feels in Ciechanów

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.

Ciechanów weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°409.96.17.90.0
Feb / -4°3595.49.50.0
Mar / -1°409.93.111.50.6
Apr13° / 439.50.913.63.6
May18° / 6812.1015.55.6
Jun21° / 11°6811.8016.66.1
Jul23° / 13°8312.4016.16.5
Aug23° / 13°5810.5014.56.7
Sep18° / 549.1012.45.7
Oct12° / 459.20.310.33.1
Nov / 389.12.28.40.5
Dec / -3°439.84.97.40.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 8% of December, with mostly cloudy or overcast conditions the remaining 82%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11783
21783
31783
41585
51684
61684
71684
81585
91585
101585
111585
121585
131684
141684
151684
161684
171783
181882
191882
201882
211882
221882
231981
242179
252179
262179
272080
282179
292080
302080
312080

Chance of precipitation in December

Any precipitationSnow

Ciechanów gets around 43 mm of rain and snow over 9.8 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 32% and peaks near 34% on the wettest days, and about 5 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
12813
22813
32913
42913
53014
63114
73115
83215
93215
103216
113216
123216
133217
143217
153217
163217
173217
183217
193217
203217
213217
223217
233217
243217
253317
263317
273317
283417
293417
303417
313417

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 16 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
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 7 h 42 min at the start of December to 7 h 24 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 7:36 AM to 7:58 AM, and sunset from 3:19 PM to 3:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.77:363:19
27.77:373:18
37.67:393:18
47.67:403:17
57.67:413:17
67.67:423:16
77.57:443:16
87.57:453:15
97.57:463:15
107.57:473:15
117.47:483:15
127.47:493:15
137.47:503:15
147.47:513:15
157.47:523:15
167.47:533:15
177.47:533:15
187.47:543:15
197.37:553:16
207.37:553:16
217.37:563:16
227.37:563:17
237.37:573:17
247.37:573:18
257.37:573:18
267.47:583:19
277.47:583:20
287.47:583:20
297.47:583:21
307.47:583:22
317.47:583:23

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.49 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.49 kWh/m² to a high of 5.49 kWh/m² in June across the year — December's 0.49 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.6Dim
20.6Dim
30.6Dim
40.5Dim
50.5Dim
60.5Dim
70.5Dim
80.5Dim
90.5Dim
100.5Dim
110.5Dim
120.5Dim
130.5Dim
140.5Dim
150.5Dim
160.5Dim
170.5Dim
180.5Dim
190.5Dim
200.5Dim
210.5Dim
220.5Dim
230.5Dim
240.5Dim
250.5Dim
260.5Dim
270.5Dim
280.5Dim
290.5Dim
300.5Dim
310.5Dim
Planning a trip in December

Is December a good time to visit Ciechanów?

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 Ciechanów.

What to pack for Ciechanów in December

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

In December, Ciechanów sees daytime highs around 2°C and nights near -3°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

UV index in Ciechanów 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 Ciechanów peaks around June 22 at about 6 (high) — a little sun protection helps at midday. It bottoms out near December 20 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 22UV 6Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec1Low
Location & terrain

Where is Ciechanów?

Ciechanów sits at 52.9°N, 20.6°E, 119 m above sea level, in Poland. The nearest listed city is Przasnysz, 23 km away.

DziałdowoNowy Dwór MazowieckiLegionowoŁomianki

Topography around Ciechanów

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

Within 3 km, the terrain around Ciechanów has only modest variations in elevation — a maximum elevation change of 55 m around an average of 122 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 93 m; within 80 km, only modest variations in elevation — a maximum elevation change of 199 m.

The land around Ciechanów is covered by cropland (34%), artificial surfaces (26%) and trees (20%) within 3 km, cropland (59%) and trees (22%) within 16 km, and cropland (39%), trees (37%) and grassland (21%) within 80 km.

3 km
55 m
16 km
93 m
80 km
199 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Przasnysz 23 km · Mława 30 km · Płońsk 33 km · Pułtusk 37 km · Działdowo 50 km · Nowy Dwór Mazowiecki 51 km · Legionowo 57 km · Łomianki 63 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 Ciechanów (52.8814°, 20.62°, elevation 119 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).