Kalisz weather in May

In May, Kalisz sees average daytime highs of 19°C and overnight lows near 9°C, with 58 mm of rain across 11.5 wet days and about 15.4 hours of daylight. It is the 4th-warmest and 4th-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 36 min at the start of May to 16 hours by month's end. Set against the rest of the year, May is Kalisz's 4th-clearest and 9th-windiest month. For the whole year in context, see Kalisz's year-round climate.

Daytime high
19°
4th warmest
Overnight low
8th coldest
Rainfall
58 mm
11.5 wet days
Daylight
15 h 24 min
4:02 AM – 7:26 PM
Cloud cover
63%
4th clearest
Wind
13 km/h
9th windiest
Solar energy
5.17 kWh/m²
Travel score
5.9
out of 10

Kalisz is city with powiat rights of Poland.

Air quality
Elevated
PM2.5 20.6 µg/m³ · 2019
Density
1,567/km²
people per km²
Founded
~850 CE

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 Kalisz reaches about 19°C in the afternoon and slips back to 9°C overnight — a 10°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
5188
6188
7188
8188
9188
10188
11188
12198
13198
14199
15199
16199
17199
18199
19199
20199
21209
222010
232010
242010
252010
262010
272010
282110
292111
302111
312111

How May really feels in Kalisz

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.

Kalisz weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°4010.75.48.10.0
Feb / -2°369.14.69.60.0
Mar / 4610.83.111.51.1
Apr14° / 358.70.613.64.1
May19° / 5811.5015.45.9
Jun22° / 12°6911.7016.36.3
Jul24° / 14°9112.10166.6
Aug24° / 14°6010.3014.46.8
Sep19° / 10°519.4012.46.0
Oct13° / 448.60.210.43.7
Nov / 399.11.78.60.9
Dec / -2°421047.60.0

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 (%)
14456
24456
34456
44258
54258
64258
74159
84060
94060
103961
113961
124060
134060
144060
153961
164060
174060
184060
194060
203961
214159
224159
234159
244159
254159
264258
274258
284258
294258
304357
314357

Chance of precipitation in May

Any precipitation

Kalisz gets around 58 mm of rain over 11.5 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
133
234
335
436
536
637
738
838
939
1039
1139
1239
1339
1438
1538
1638
1737
1837
1936
2036
2135
2235
2335
2435
2535
2636
2736
2836
2936
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 92% 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
79640
89640
99640
109550
119550
129550
139460
149460
159460
169271
179271
189271
199181
209181
219091
229091
2389101
2487112
2587112
2686122
2785132
2884142
2982153
3081163
3181163

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
2413light breeze
2513light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 36 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 84 minutes over May. Sunrise moves from 4:28 AM to 3:44 AM, and sunset from 7:01 PM to 7:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.64:287:01
214.64:267:03
314.74:247:05
414.74:227:06
514.84:217:08
614.94:197:10
714.94:177:11
815.04:157:13
915.04:137:15
1015.14:127:16
1115.14:107:18
1215.24:087:20
1315.24:077:21
1415.34:057:23
1515.34:047:24
1615.44:027:26
1715.44:007:27
1815.53:597:29
1915.53:587:30
2015.63:567:32
2115.63:557:33
2215.73:547:35
2315.73:527:36
2415.83:517:37
2515.83:507:39
2615.93:497:40
2715.93:487:41
2815.93:477:43
2916.03:467:44
3016.03:457:45
3116.03:447:46

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.17 kWh/m².

For context, solar energy here swings from a low near 0.6 kWh/m² to a high of 5.44 kWh/m² in June across the year — May's 5.17 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
105.0Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.5Bright
315.5Bright
Planning a trip in May

Is May a good time to visit Kalisz?

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
2.6
Beach & pool
5th-best month of the year

May is a reasonable time to visit Kalisz for sightseeing.

What to pack for Kalisz in May

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

In May, Kalisz 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 Kalisz 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 Kalisz 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 Kalisz 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 Kalisz is worst in June — around 26 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 13 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Kalisz's WHO annual average of 20.6 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1626 µg/m³Dec 1514 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb18Moderate
Mar24Moderate
Apr25Moderate
May24Moderate
Jun26Moderate
Jul24Moderate
Aug23Moderate
Sep20Moderate
Oct17Moderate
Nov16Moderate
Dec13Moderate
Location & terrain

Where is Kalisz?

Kalisz sits at 51.8°N, 18.1°E, 109 m above sea level, in Poland. The nearest listed city is Ostrów Wielkopolski, 23 km away.

TurekKrotoszynJarocinSieradzKoninZduńska Wola

Topography around Kalisz

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

Within 3 km, the terrain around Kalisz has only modest variations in elevation — a maximum elevation change of 47 m around an average of 122 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 94 m; within 80 km, significant variations in elevation — a maximum elevation change of 260 m.

The land around Kalisz is covered by artificial surfaces (36%), trees (26%) and cropland (25%) within 3 km, cropland (68%) within 16 km, and cropland (55%) and trees (28%) within 80 km.

3 km
47 m
16 km
94 m
80 km
260 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Ostrów Wielkopolski 23 km · Pleszew 26 km · Turek 40 km · Krotoszyn 46 km · Jarocin 47 km · Sieradz 48 km · Konin 53 km · Zduńska Wola 61 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 Kalisz (51.7611°, 18.091°, elevation 109 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).