Siedlce weather in January

In January, Siedlce sees average daytime highs of 0°C and overnight lows near -4°C, with 41 mm of precipitation across 9.9 wet days and about 8 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 0°C through the month. The sky is clear or mostly clear about 10% of the time in January, and the air most often feels dry.

Daylight stretches from about 7 h 36 min at the start of January to 8 h 42 min by month's end. Set against the rest of the year, January is Siedlce's 11th-clearest and 1st-windiest month. For the whole year in context, see Siedlce's year-round climate.

Daytime high
12th warmest
Overnight low
-4°
1st coldest
Precipitation
41 mm
9.9 wet days
Daylight
8 hours
7:41 AM – 3:40 PM
Cloud cover
81%
11th clearest
Wind
15 km/h
1st windiest
Solar energy
0.72 kWh/m²
Travel score
0.0
out of 10

Siedlce is city in eastern Poland.

Air quality
Elevated
PM2.5 19.6 µg/m³ · 2019
Density
2,412/km²
people per km²
Founded
1448

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 0°C through the month.

A typical January day in Siedlce reaches about 0°C in the afternoon and slips back to -4°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between -7°C and 6°C. Set against its neighbours, January runs about 1°C cooler than December and about 1°C cooler than February.

-15°-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
10-4
20-4
30-4
40-4
50-4
60-4
70-4
80-4
90-4
100-4
110-4
120-4
130-4
140-4
150-4
160-4
170-4
180-4
190-4
200-4
210-5
220-5
230-5
240-5
250-5
260-5
270-5
280-5
290-5
300-5
310-5

How January really feels in Siedlce

Once humidity and wind are folded in, January 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
11 feel bitter (≤ -10°C)

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

Siedlce weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°419.96.580.0
Feb / -4°379.66.59.50.0
Mar / -1°4210.6411.50.6
Apr13° / 469.7113.63.7
May19° / 7012.30.115.45.7
Jun22° / 12°7311.9016.46.1
Jul24° / 14°83130166.5
Aug23° / 13°6410.4014.56.8
Sep18° / 579.4012.45.7
Oct12° / 469.40.310.33.1
Nov / 399.52.88.50.5
Dec / -3°419.95.67.60.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 9% of January, with mostly cloudy or overcast conditions the remaining 81%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21783
31882
41882
51783
61882
71981
81981
91981
101981
111981
121981
131981
141981
151981
161981
171981
182080
192080
202080
211981
221981
232080
242080
251981
261981
271981
281981
291882
301882
311882

Chance of precipitation in January

Any precipitationSnow

Siedlce gets around 41 mm of rain and snow over 9.9 wet days in January. 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 33% on the wettest days, and about 7 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
13320
23320
33320
43320
53320
63320
73320
83320
93220
103219
113119
123019
133019
143019
152919
162920
172920
182920
192920
202920
212920
222920
233021
243021
253121
263121
273121
283220
293220
303220
313220

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January 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 January

Winds average 15 km/h in January, the windiest month of the year.

Across January, 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 January

DaylightNight

Daylight runs from about 7 h 36 min at the start of January to 8 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over January. Sunrise moves from 7:47 AM to 7:24 AM, and sunset from 3:21 PM to 4:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.67:473:21
27.67:473:22
37.67:473:23
47.67:473:24
57.67:473:25
67.77:463:26
77.77:463:27
87.77:463:29
97.77:453:30
107.87:453:31
117.87:443:32
127.87:443:34
137.97:433:35
147.97:423:37
157.97:413:38
168.07:413:40
178.07:403:41
188.17:393:43
198.17:383:44
208.17:373:46
218.27:363:47
228.27:353:49
238.37:343:51
248.37:333:52
258.47:323:54
268.47:303:56
278.57:293:58
288.57:283:59
298.67:274:01
308.67:254:03
318.77:244:05

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.72 kWh/m².

For context, solar energy here swings from a low near 0.52 kWh/m² to a high of 5.51 kWh/m² in June across the year — January's 0.72 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.6Dim
20.6Dim
30.6Dim
40.6Dim
50.6Dim
60.6Dim
70.6Dim
80.6Dim
90.6Dim
100.6Dim
110.6Dim
120.7Dim
130.7Dim
140.7Dim
150.7Dim
160.7Dim
170.7Dim
180.8Dim
190.8Dim
200.8Dim
210.8Dim
220.8Dim
230.8Dim
240.9Dim
250.9Dim
260.9Dim
270.9Dim
280.9Dim
291.0Dim
301.0Dim
311.0Dim
Planning a trip in January

Is January a good time to visit Siedlce?

Our two travel scores rate January 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

January is a weaker month for outdoor sightseeing in Siedlce.

What to pack for Siedlce in January

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

In January, Siedlce sees daytime highs around 0°C and nights near -4°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 Siedlce in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Siedlce peaks around June 22 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. 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

Air quality in Siedlce in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Siedlce is worst in March — around 24 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 13 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Siedlce's WHO annual average of 19.6 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2424 µg/m³Dec 1613 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb18Moderate
Mar24Moderate
Apr24Moderate
May22Moderate
Jun24Moderate
Jul24Moderate
Aug21Moderate
Sep19Moderate
Oct16Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Siedlce?

Siedlce sits at 52.2°N, 22.3°E, 155 m above sea level, in Poland. The nearest listed city is Sokołów Podlaski, 27 km away.

Międzyrzec PodlaskiRadzyń PodlaskiSiemiatyczeMińsk MazowieckiGarwolinBiała Podlaska

Topography around Siedlce

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

Within 3 km, the terrain around Siedlce has only modest variations in elevation — a maximum elevation change of 45 m around an average of 154 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 70 m; within 80 km, only modest variations in elevation — a maximum elevation change of 155 m.

The land around Siedlce is covered by artificial surfaces (36%), grassland (28%) and trees (24%) within 3 km, cropland (38%), trees (29%) and grassland (28%) within 16 km, and trees (38%), cropland (38%) and grassland (22%) within 80 km.

3 km
45 m
16 km
70 m
80 km
155 m
treesgrasslandcroplandartificial surfaceswaterwetland
January weather nearby: Sokołów Podlaski 27 km · Łuków 27 km · Międzyrzec Podlaski 39 km · Radzyń Podlaski 48 km · Siemiatycze 48 km · Mińsk Mazowiecki 49 km · Garwolin 55 km · Biała Podlaska 58 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 Siedlce (52.1677°, 22.2901°, elevation 155 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).