Sieradz weather in January

In January, Sieradz sees average daytime highs of 2°C and overnight lows near -3°C, with 41 mm of precipitation across 10.7 wet days and about 8.1 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 2°C through the month. The sky is clear or mostly clear about 14% of the time in January, and the air most often feels dry.

Daylight stretches from about 7 h 42 min at the start of January to 8 h 48 min by month's end. Set against the rest of the year, January is Sieradz's 10th-clearest and 1st-windiest month. For the whole year in context, see Sieradz's year-round climate.

Daytime high
12th warmest
Overnight low
-3°
1st coldest
Precipitation
41 mm
10.7 wet days
Daylight
8 h 06 min
7:52 AM – 3:57 PM
Cloud cover
76%
10th clearest
Wind
16 km/h
1st windiest
Solar energy
0.8 kWh/m²
Travel score
0.0
out of 10

Sieradz is town on the Warta river in central Poland.

Air quality
Moderate
PM10 35.1 µg/m³ · 2015
Density
868/km²
people per km²
Founded
1050

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 2°C through the month.

A typical January day in Sieradz reaches about 2°C in the afternoon and slips back to -3°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between -5°C and 8°C. Set against its neighbours, January runs about 1°C cooler than December and about 2°C cooler than February.

-15°-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
12-3
22-3
32-3
42-3
52-3
62-3
72-3
82-3
92-3
102-3
112-3
122-3
132-3
142-3
152-3
162-3
172-3
181-3
191-3
201-3
211-3
221-3
231-3
241-4
251-4
261-4
271-4
281-4
291-4
301-3
312-3

How January really feels in Sieradz

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
wind chill below the day's low

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

Sieradz 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 / -3°4110.75.58.10.0
Feb / -3°379.359.60.0
Mar / -0°4610.23.111.51.1
Apr14° / 409.20.913.64.1
May19° / 6511.70.115.35.9
Jun22° / 12°7012.5016.36.2
Jul25° / 14°8912.9015.96.4
Aug24° / 14°5910.5014.46.7
Sep19° / 10°579.7012.46.0
Oct13° / 469.10.210.43.7
Nov / 418.91.98.60.9
Dec / -2°4210.24.27.70.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 10% of January, with mostly cloudy or overcast conditions the remaining 76%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12476
22476
32476
42476
52476
62476
72476
82476
92476
102476
112476
122476
132575
142575
152575
162575
172575
182575
192674
202575
212575
222575
232377
242377
252377
262377
272377
282278
292278
302278
312377

Chance of precipitation in January

Any precipitationSnow

Sieradz gets around 41 mm of rain and snow over 10.7 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 34% and peaks near 37% on the wettest days, and about 6 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13616
23616
33616
43716
53716
63717
73717
83717
93717
103617
113617
123617
133518
143418
153418
163318
173318
183218
193218
203118
213118
223118
233118
243218
253218
263218
273217
283217
293217
303216
313316

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 16 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 16 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
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 7 h 42 min at the start of January to 8 h 48 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 7:58 AM to 7:36 AM, and sunset from 3:38 PM to 4:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.77:583:38
27.77:583:39
37.77:583:40
47.77:583:41
57.77:583:42
67.87:583:43
77.87:573:44
87.87:573:46
97.87:563:47
107.97:563:48
117.97:563:49
127.97:553:51
138.07:543:52
148.07:543:54
158.07:533:55
168.17:523:57
178.17:513:58
188.17:514:00
198.27:504:01
208.27:494:03
218.37:484:04
228.37:474:06
238.47:464:07
248.47:454:09
258.57:434:11
268.57:424:12
278.67:414:14
288.67:404:16
298.77:394:18
308.77:374:19
318.87:364:21

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.8 kWh/m².

For context, solar energy here swings from a low near 0.61 kWh/m² to a high of 5.42 kWh/m² in June across the year — January's 0.8 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.6Dim
20.6Dim
30.7Dim
40.7Dim
50.7Dim
60.7Dim
70.7Dim
80.7Dim
90.7Dim
100.7Dim
110.7Dim
120.7Dim
130.8Dim
140.8Dim
150.8Dim
160.8Dim
170.8Dim
180.8Dim
190.8Dim
200.8Dim
210.9Dim
220.9Dim
230.9Dim
240.9Dim
250.9Dim
261.0Dim
271.0Dim
281.0Dim
291.0Dim
301.1Dim
311.1Dim
Planning a trip in January

Is January a good time to visit Sieradz?

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 Sieradz.

What to pack for Sieradz in January

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

In January, Sieradz sees daytime highs around 2°C and nights near -3°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 11 days see rain.

a warm layera heavy coatrain gear

UV index in Sieradz 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 Sieradz peaks around June 19 at about 7 (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 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 19UV 7Dec 19UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5High
Jun7High
Jul6High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec1Low

Air quality in Sieradz 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 Sieradz is worst in June — around 18 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 11 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJun 1718 µg/m³Dec 1611 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar17Moderate
Apr17Moderate
May16Moderate
Jun18Moderate
Jul17Moderate
Aug16Moderate
Sep15Moderate
Oct13Moderate
Nov12Moderate
Dec11Good
Location & terrain

Where is Sieradz?

Sieradz sits at 51.6°N, 18.7°E, 137 m above sea level, in Poland. The nearest listed city is Zduńska Wola, 14 km away.

WieluńPabianiceKonstantynów ŁódzkiAleksandrów ŁódzkiKaliszTurek

Topography around Sieradz

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

Within 3 km, the terrain around Sieradz has only modest variations in elevation — a maximum elevation change of 32 m around an average of 136 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 106 m; within 80 km, significant variations in elevation — a maximum elevation change of 499 m.

The land around Sieradz is covered by cropland (38%), grassland (25%) and artificial surfaces (20%) within 3 km, cropland (45%) and trees (32%) within 16 km, and cropland (51%) and trees (32%) within 80 km.

3 km
32 m
16 km
106 m
80 km
499 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Zduńska Wola 14 km · Łask 28 km · Wieluń 43 km · Pabianice 44 km · Konstantynów Łódzki 44 km · Aleksandrów Łódzki 47 km · Kalisz 48 km · Turek 49 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 Sieradz (51.5958°, 18.7302°, elevation 137 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).