Sieradz weather in May

In May, Sieradz sees average daytime highs of 19°C and overnight lows near 9°C, with 65 mm of precipitation across 11.7 wet days and about 15.3 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 18°C in the first days to 21°C by the end. The sky is clear or mostly clear about 24% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 30 min at the start of May to 16 hours by month's end. Set against the rest of the year, May is Sieradz's 4th-clearest and 9th-windiest month. For the whole year in context, see Sieradz's year-round climate.

Daytime high
19°
4th warmest
Overnight low
8th coldest
Precipitation
65 mm
11.7 wet days
Daylight
15 h 24 min
4:00 AM – 7:23 PM
Cloud cover
64%
4th clearest
Wind
13 km/h
9th windiest
Solar energy
5.16 kWh/m²
Travel score
5.9
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 May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 18°C in the first days to 21°C by the end.

A typical May day in Sieradz reaches about 19°C in the afternoon and slips back to 9°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 26°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1187
2187
3187
4187
5187
6188
7188
8188
9198
10198
11198
12198
13198
14198
15199
16199
17199
18199
19199
20209
21209
22209
232010
242010
252010
262010
272110
282110
292110
302111
312111

How May really feels in Sieradz

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 0 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
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Sieradz weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 3rd-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34357
44357
54258
64258
74159
84159
94060
103961
113961
123961
134060
143961
153961
164060
173961
183961
194060
204060
214159
224159
234258
244258
254258
264258
274357
284357
294456
304357
314357

Chance of precipitation in May

Any precipitation

Sieradz gets around 65 mm of rain and snow over 11.7 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 37% and peaks near 40% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)
131
232
333
434
535
636
736
837
937
1038
1138
1239
1339
1439
1540
1640
1739
1839
1939
2038
2138
2238
2338
2438
2537
2637
2737
2837
2937
3037
3137

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 91% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19910
29820
39820
49820
59730
69730
79730
89640
99640
109550
119550
129460
139460
149370
159370
169280
179280
189280
199091
209091
2189101
2288111
2388111
2487121
2586122
2685132
2784142
2883152
2982153
3081163
3180173

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 30 min at the start of May to 16 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 90 minutes over May. Sunrise moves from 4:26 AM to 3:42 AM, and sunset from 6:58 PM to 7:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:266:58
214.64:247:00
314.74:227:02
414.74:207:03
514.84:197:05
614.84:177:07
714.94:157:08
814.94:137:10
915.04:117:12
1015.14:107:13
1115.14:087:15
1215.24:067:16
1315.24:057:18
1415.34:037:20
1515.34:027:21
1615.44:007:23
1715.43:597:24
1815.53:577:26
1915.53:567:27
2015.63:547:29
2115.63:537:30
2215.73:527:31
2315.73:507:33
2415.73:497:34
2515.83:487:35
2615.83:477:37
2715.93:467:38
2815.93:457:39
2915.93:447:41
3016.03:437:42
3116.03:427:43

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.16 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 — May's 5.16 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.5Bright
Planning a trip in May

Is May a good time to visit Sieradz?

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

5.9
Sightseeing
5th-best month of the year
2.7
Beach & pool
5th-best month of the year

May is a reasonable time to visit Sieradz for sightseeing.

What to pack for Sieradz in May

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

In May, Sieradz sees daytime highs around 19°C and nights near 9°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

UV index in Sieradz in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 5 — enough to warrant sun protection. 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 May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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
May 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).