Bydgoszcz weather in May

In May, Bydgoszcz sees average daytime highs of 18°C and overnight lows near 8°C, with 58 mm of rain across 10.8 wet days and about 15.5 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 20°C by the end. The sky is clear or mostly clear about 25% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 42 min at the start of May to 16 h 18 min by month's end. Set against the rest of the year, May is Bydgoszcz's 3rd-clearest and 9th-windiest month. For the whole year in context, see Bydgoszcz's year-round climate.

Daytime high
18°
4th warmest
Overnight low
8th coldest
Rainfall
58 mm
10.8 wet days
Daylight
15 h 36 min
3:57 AM – 7:32 PM
Cloud cover
62%
3rd clearest
Wind
12 km/h
9th windiest
Solar energy
5.17 kWh/m²
Travel score
5.8
out of 10

Bydgoszcz is city in the Kuyavian-Pomeranian Voivodeship in north-central Poland.

Air quality
Elevated
PM2.5 18.1 µg/m³ · 2019
Density
1,875/km²
people per km²
Founded
1038

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 17°C in the first days to 20°C by the end.

A typical May day in Bydgoszcz reaches about 18°C in the afternoon and slips back to 8°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 25°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)
1177
2177
3177
4177
5177
6177
7177
8177
9178
10188
11188
12188
13188
14188
15188
16188
17188
18189
19199
20199
21199
22199
23199
24199
251910
262010
272010
282010
292010
302010
312010

How May really feels in Bydgoszcz

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.

Bydgoszcz 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°3810.14.77.90.0
Feb / -2°318.14.39.50.0
Mar / 43102.411.50.9
Apr13° / 358.80.513.63.8
May18° / 5810.8015.55.8
Jun21° / 12°6311.3016.66.2
Jul23° / 14°8311.6016.26.6
Aug23° / 14°6210.4014.56.8
Sep18° / 10°508.7012.45.9
Oct12° / 439.20.110.33.4
Nov / 368.91.68.40.7
Dec / -1°399.33.57.40.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% 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 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24456
34456
44456
54456
64456
74357
84258
94258
104159
114258
124159
134159
144060
153961
164060
174060
184060
194060
204060
214159
224159
234258
244258
254258
264357
274357
284456
294456
304555
314555

Chance of precipitation in May

Any precipitation

Bydgoszcz gets around 58 mm of rain over 10.8 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 34% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
130
231
331
432
533
634
735
835
936
1036
1137
1237
1337
1436
1536
1636
1735
1835
1934
2034
2134
2234
2334
2434
2534
2634
2734
2834
2934
3034
3135

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
29910
39910
49820
59820
69820
79730
89730
99730
109640
119640
129550
139460
149460
159370
169280
179280
189091
199091
2089101
2188111
2288111
2386122
2485132
2584142
2683152
2782153
2881163
2981163
3080173
3179174

Wind in May

Winds average 12 km/h in May.

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

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 42 min at the start of May to 16 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 96 minutes over May. Sunrise moves from 4:24 AM to 3:37 AM, and sunset from 7:06 PM to 7:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.74:247:06
214.84:227:08
314.84:207:09
414.94:187:11
514.94:167:13
615.04:157:15
715.14:137:16
815.14:117:18
915.24:097:20
1015.24:077:22
1115.34:057:23
1215.44:037:25
1315.44:027:27
1415.54:007:28
1515.53:587:30
1615.63:577:32
1715.63:557:33
1815.73:547:35
1915.73:527:36
2015.83:517:38
2115.83:497:40
2215.93:487:41
2315.93:467:43
2416.03:457:44
2516.03:447:45
2616.13:437:47
2716.13:417:48
2816.23:407:50
2916.23:397:51
3016.23:387:52
3116.33:377:54

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 0.49 kWh/m² to a high of 5.39 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
14.9Bright
24.9Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in May

Is May a good time to visit Bydgoszcz?

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

5.8
Sightseeing
5th-best month of the year
2.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Bydgoszcz for sightseeing.

What to pack for Bydgoszcz in May

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

In May, Bydgoszcz sees daytime highs around 18°C and nights near 8°C. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

UV index in Bydgoszcz 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 Bydgoszcz peaks around June 18 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 18UV 6Dec 19UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5High
Jun6High
Jul6High
Aug5High
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low

Air quality in Bydgoszcz 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 Bydgoszcz is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 12 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Bydgoszcz's WHO annual average of 18.1 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1222 µg/m³Dec 1512 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar22Moderate
Apr23Moderate
May21Moderate
Jun22Moderate
Jul21Moderate
Aug20Moderate
Sep17Moderate
Oct15Moderate
Nov14Moderate
Dec12Good
Location & terrain

Where is Bydgoszcz?

Bydgoszcz sits at 53.1°N, 18.0°E, 37 m above sea level, in Poland. The nearest listed city is Fordon, 11 km away.

InowrocławChełmżaTorunŚwiecie

Topography around Bydgoszcz

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

Within 3 km, the terrain around Bydgoszcz has only modest variations in elevation — a maximum elevation change of 55 m around an average of 59 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 101 m; within 80 km, only modest variations in elevation — a maximum elevation change of 215 m.

The land around Bydgoszcz is covered by artificial surfaces (60%) and trees (28%) within 3 km, trees (55%) within 16 km, and cropland (55%) and trees (32%) within 80 km.

3 km
55 m
16 km
101 m
80 km
215 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Fordon 11 km · Solec Kujawski 15 km · Nakło nad Notecią 27 km · Chełmno 37 km · Inowrocław 40 km · Chełmża 40 km · Torun 41 km · Świecie 43 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 Bydgoszcz (53.1235°, 18.0076°, elevation 37 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).