Climate and average weather in Zawiercie

In Zawiercie, the summers are warm, showery, and partly cloudy and the winters are very cold, snowy, and mostly cloudy.

Best: late May to late September

Over the course of the year, the temperature in Zawiercie typically varies from -4°C to 23°C, and is rarely below -14°C or above 30°C. July is the hottest month of the year, while January is the coldest.

Based on the travel score, the best time of year to visit Zawiercie for warm-weather activities is from late May to late September.

Hottest
Jul
23°
Coldest
Jan
-4°
Wettest
Jul
108 mm
Driest
Feb
44 mm
Rain / yr
791 mm
143 wet days
Daylight
7.8–16.2 h
shortest–longest
Elevation
332 m
50.5°N
Clearest
Aug
58% cloud

Zawiercie is city in southern Poland, in the Silesian Voivodeship.

Air quality
Moderate
PM10 39.6 µg/m³ · 2017
Density
624/km²
people per km²

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

Zawiercie weather by month, at a glance

The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.

Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around late May to late September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Zawiercie, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 3.9 months, from May 20 to September 15, with daily high temperatures above 18°C. The hottest month of the year in Zawiercie is July, with an average high of 23°C and low of 14°C.

The cool season lasts 3.4 months, from November 22 to March 4, with daily high temperatures below 5°C. The coldest month of the year in Zawiercie is January, with an average low of -4°C and high of 1°C.

Days typically run about 8°C warmer than nights, with the widest day–night swing (around 10°C) in August.

-10°10°20°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan1-4
Feb2-3
Mar70
Apr134
May189
Jun2112
Jul2314
Aug2313
Sep1810
Oct135
Nov71
Dec2-3

How hot and cold Zawiercie really feels

Feels-like highFeels-like lowactual air temp

The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.

On the coldest nights, wind chill pulls the feels-like down to about -11°C (around January 28), with roughly 166 freezing days a year (feels-like at or below 0°C) 16 of them bitterly cold — worst in January.

-10°10°20°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan11-10-4
Feb22-9-3
Mar77-50
Apr131314
May181879
Jun21211212
Jul23231414
Aug23231313
Sep1818810
Oct131325
Nov77-31
Dec22-8-3

Average hourly temperature in Zawiercie

A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on July afternoons, near 23°C, and coldest before dawn in January, near -4°C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Zawiercie weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°4611.67.98.30.0
Feb / -4°4410.77.49.70.0
Mar / -0°5411.84.711.50.8
Apr13° / 5611.21.613.53.6
May18° / 8714.2015.25.3
Jun21° / 12°9014016.15.8
Jul23° / 14°10814.5015.86.2
Aug23° / 13°8211.9014.36.6
Sep18° / 10°7311.3012.45.6
Oct13° / 5710.20.510.43.4
Nov / 4910.538.70.8
Dec / -3°4510.76.27.90.0

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Zawiercie gets about 791 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.

The wetter season lasts 3.4 months, from around May 1 to Aug 12, peaking in July at about 49% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Dec 2.

July is the wettest month by volume, with 108 mm over about 15 wet days; February is the driest, with 44 mm. Some of the cold-season precipitation falls as snow.

0%10%20%30%40%50%60%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetJul 15 · 49%Dec 2 · 32%
Rain on a day (%)Rain days
Jan3712
Feb3911
Mar3812
Apr3811
May4514
Jun4714
Jul4715
Aug3912
Sep3711
Oct3310
Nov3511
Dec3511

Monthly rainfall

Over a full year, Zawiercie collects about 791 mm of rain across 143 wet days — roughly 66 mm in an average month.

It doesn’t fall evenly. July is the wettest month with 108 mm, while February is the driest at just 44 mm. The three wettest months alone bring about 36% of the year’s total, and some of the cold-season precipitation falls as snow.

0255075100125JanFebMarAprMayJunJulAugSepOctNovDec4644545687901088273574945
Rainfall (mm)Rain daysSnow days
Jan46128
Feb44117
Mar54125
Apr56112
May87140
Jun90140
Jul108150
Aug82120
Sep73110
Oct57101
Nov49113
Dec45116

Snow in Zawiercie

Average snowy days through the year, the snow-season span, and estimated snowfall — for ski trips and the perennial 'will there be snow at Christmas?' question.

Zawiercie averages about 31 snowy days a year. Snow season runs roughly Oct 14 to Apr 25 — about 6.4 months.

February is snowiest, with roughly 8 days of snow and an estimated 32 cm of snowfall. Over the year that adds up to an estimated 123 cm of snow.

0246810JanFebMarAprMayJunJulAugSepOctNovDecsnow seasonsnow seasonFeb 13
Snow daysSnowfall (cm)
Jan825
Feb732
Mar519
Apr27
May00
Jun00
Jul00
Aug00
Sep00
Oct15
Nov312
Dec624

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Zawiercie, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.

The clearer part of the year begins around April 10 and lasts for 5.8 months, ending around October 2. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 51% of the time on average.

The cloudier part of the year begins around October 3 and lasts for 5.8 months, ending around March 29. The cloudiest month is December, when it is overcast or mostly cloudy 77% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecAug 15 · 53%Dec 10 · 22%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2476
Feb2575
Mar3169
Apr3961
May4159
Jun4357
Jul4852
Aug5149
Sep4159
Oct3367
Nov2575
Dec2377

Daylight, sunrise and sunset

DaylightNight

Hours of daylight through the year, with sunrise and sunset times.

The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 13, brings about 16 h 12 min of light; the shortest, around January 1, only 7 h 48 min — a swing of roughly 8 h 24 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan8.37:443:59
Feb9.77:064:48
Mar11.56:065:38
Apr13.54:576:28
May15.24:027:16
Jun16.13:377:48
Jul15.83:547:42
Aug14.34:376:56
Sep12.45:255:48
Oct10.46:144:41
Nov8.77:073:48
Dec7.97:453:32

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Zawiercie averages about 6 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 3 and 8 days.

The sunnier stretch runs 4.0 months, from around Jun 21 to Oct 21. The sunniest month is August, with roughly 8 sunny days (mixed).

The greyest month is November, down near 4 sunny days — about 52% fewer than the August peak.

051015JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedAug 178 daysNov 203 days
Sunny daysSky
Jan4Gloomy
Feb4Gloomy
Mar6Gloomy
Apr7Gloomy
May8Gloomy
Jun7Gloomy
Jul8Gloomy
Aug8Mixed
Sep7Gloomy
Oct6Gloomy
Nov4Gloomy
Dec4Gloomy

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.

Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.

In Zawiercie, how humid it feels changes noticeably over the year.

The more humid part of the year lasts 3.2 months, from around June 1 to September 4. The muggiest month is July, when the air feels humid, muggy or worse about 23% of the time.

The most comfortable stretch runs from around September 5 to May 31, and April is the most comfortable month — the air is dry or comfortable 100% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecApr 30 · 100%Jul 30 · 72%humidcomfortabledrycomfortablehumidcomfortable
Dry (%)Comfortable (%)Humid (%)Muggy (%)
Jan100000
Feb100000
Mar100000
Apr100000
May90910
Jun6424111
Jul4532221
Aug4933162
Sep841520
Oct98200
Nov100000
Dec100000

Wind

Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Across the year, average wind speed in Zawiercie is typically light breeze, near 14 km/h, and varies moderately with the seasons.

The windier part of the year lasts 5.7 months, from around Oct 18 to Apr 9. The windiest month is January, averaging about 17 km/h (light breeze).

The calmer part of the year runs from around Apr 10 to Oct 17, with August the calmest month at about 12 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDecwindiercalmerwindiercalmlight breezeJan 1 · 17 km/hAug 3 · 11 km/h
Wind speed (km/h)Feels
Jan17light breeze
Feb16light breeze
Mar16light breeze
Apr14light breeze
May13light breeze
Jun12light breeze
Jul12calm
Aug12calm
Sep13light breeze
Oct14light breeze
Nov15light breeze
Dec16light breeze

Best time to visit Zawiercie

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Zawiercie throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around late May, Zawiercie is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.

Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Zawiercie for general outdoor tourist activities is from late May to late September, with a peak score in the third week of August.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationAug 17 · 6.7

The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Travel score (0–10)Rating
Jan0.0poor
Feb0.0poor
Mar0.9poor
Apr3.6fair
May5.3fair
Jun5.8good
Jul6.2good
Aug6.5good
Sep5.6good
Oct3.4poor
Nov0.8poor
Dec0.0poor

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Zawiercie for hot-weather activities is from early July to late August, with a peak score in the second week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 8 · 5.6

The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

What to pack for Zawiercie, by month

EssentialRecommendedOptional

Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.

For a warm-season trip around July (highs near 23°C), the essentials are light clothes, rain gear and sun protection. In the cold season around January (highs near 1°C), pack a warm layer, a heavy coat and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In July, Zawiercie sees daytime highs around 23°C and nights near 14°C. Pack rain gear. Worth having: light clothes and sun protection. About 15 days see rain.

UV index (midday) in Zawiercie by month

LowModerateHighVery highExtreme

Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.

Under clear skies, the midday UV index in Zawiercie peaks around June 22 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 18 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 22UV 7Dec 18UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar4Moderate
Apr5Moderate
May6High
Jun7High
Jul7High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Average hourly UV index in Zawiercie

LowModerateHighVery highExtreme

Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.

The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

UV falls off far faster than brightness as the sun drops, so even in June the burn window is concentrated in the middle of the day: about 8 hours a day reach index 3 (protection recommended), and 3 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan00
Feb00
Mar2.50
Apr50
May6.50
Jun83
Jul7.53
Aug6.50
Sep40
Oct00
Nov00
Dec00

Air quality in Zawiercie by month

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.

Air quality in Zawiercie is worst in June — around 22 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1722 µg/m³Dec 1716 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb18Moderate
Mar21Moderate
Apr21Moderate
May21Moderate
Jun22Moderate
Jul21Moderate
Aug21Moderate
Sep20Moderate
Oct18Moderate
Nov18Moderate
Dec16Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayTypical season (≥50%)

The growing season in Zawiercie typically lasts about 249 days, from around March 20 to November 23 — the span where a frost-free day is more likely than not. It is reliably frost-free from April 21 to October 16.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecgrowing seasonMar 2050%Apr 2190%Oct 1690%Nov 2350%
Frost-free chance (%)Frost nights
Jan2431
Feb2628
Mar4731
Apr8521
May990
Jun1000
Jul1000
Aug1000
Sep1000
Oct8918
Nov6230
Dec3131

Growing degree days

Degree days (base 10°C)Frost-free shaded

Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Zawiercie banks about 955 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around July.

02505007501,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan0
Feb0
Mar0
Apr9
May104
Jun196
Jul265
Aug258
Sep116
Oct8
Nov0
Dec0

Solar energy

Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Zawiercie receives about 3.1 kWh/m² a day of solar energy on average — moderate — with a clear seasonal swing between 0.7 and 5.4 kWh/m².

The brighter stretch of the year lasts 5.9 months, from around Mar 20 to Sep 16. The brightest month is June, averaging about 5.3 kWh/m² (bright).

The dimmest month is December, down near 0.7 kWh/m² — roughly 86% less than the June peak.

0123456JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightJun 75.4 kWhDec 190.7 kWh
Solar energy (kWh/m²)Level
Jan0.9Dim
Feb1.7Dim
Mar2.9Moderate
Apr4.4Bright
May5.1Bright
Jun5.3Bright
Jul5.2Bright
Aug4.5Bright
Sep3.1Moderate
Oct1.9Dim
Nov1.0Dim
Dec0.7Dim

Where is Zawiercie?

Zawiercie sits at 50.5°N, 19.4°E, 332 m above sea level, in Poland. The nearest listed city is Myszków, 12 km away.

Topography around Zawiercie

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

Within 3 km, the terrain around Zawiercie has only modest variations in elevation — a maximum elevation change of 67 m around an average of 336 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 226 m; within 80 km, large variations in elevation — a maximum elevation change of 750 m.

The land around Zawiercie is covered by trees (53%) and artificial surfaces (27%) within 3 km, trees (54%) and grassland (25%) within 16 km, and trees (45%) and cropland (33%) within 80 km.

3 km
67 m
16 km
226 m
80 km
750 m
treesgrasslandcroplandartificial surfaceswater
Nearby: Myszków 12 km · Dąbrowa Górnicza 23 km · Olkusz 25 km · Będzin 27 km · Czeladź 31 km · Sosnowiec 31 km · Siemianowice Śląskie 33 km · Jaworzno 33 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 Zawiercie (50.4877°, 19.4168°, elevation 332 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).