Bolesławiec weather in May

In May, Bolesławiec sees average daytime highs of 18°C and overnight lows near 9°C, with 62 mm of precipitation across 11.9 wet days and about 15.3 hours of daylight. It is the 5th-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 22% 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 Bolesławiec's 6th-clearest and 9th-windiest month. For the whole year in context, see Bolesławiec's year-round climate.

Daytime high
18°
5th warmest
Overnight low
8th coldest
Precipitation
62 mm
11.9 wet days
Daylight
15 h 18 min
4:14 AM – 7:34 PM
Cloud cover
66%
6th clearest
Wind
11 km/h
9th windiest
Solar energy
5.04 kWh/m²
Travel score
5.6
out of 10

Bolesławiec is historic town situated on the Bóbr River in the Lower Silesian Voivodeship, in southwestern Poland.

Air quality
Moderate
PM10 33.3 µg/m³ · 2017
Density
1,784/km²
people per km²
Founded
1201

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 Bolesławiec reaches about 18°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 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
7178
8188
9188
10188
11188
12188
13188
14188
15188
16189
17189
18199
19199
20199
21199
22199
23199
241910
251910
262010
272010
282010
292010
302010
312010

How May really feels in Bolesławiec

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.

Bolesławiec weather by month

How May compares with the rest of the year at a glance. May is the 5th-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°5712.46.48.20.0
Feb / -2°4610.75.99.60.0
Mar / 5912.74.511.51.2
Apr14° / 419.5113.53.9
May18° / 6211.90.115.35.6
Jun22° / 12°6812.6016.36.0
Jul24° / 14°8713.1015.96.4
Aug23° / 13°6910.6014.46.7
Sep19° / 10°6010.3012.45.8
Oct13° / 5210.40.310.43.5
Nov / 4910.42.48.70.9
Dec / -1°51125.27.70.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23961
33961
43763
53763
63763
73763
83763
93664
103763
113763
123763
133763
143763
153763
163763
173862
183763
193763
203763
213763
223763
233763
243763
253763
263763
273862
283862
293961
303862
313862

Chance of precipitation in May

Any precipitation

Bolesławiec gets around 62 mm of rain and snow over 11.9 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 38% and peaks near 40% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
237
338
438
539
639
740
840
940
1040
1139
1239
1339
1438
1538
1638
1737
1837
1937
2037
2137
2237
2337
2437
2537
2637
2738
2838
2938
3039
3139

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
79730
89730
99640
109640
119640
129550
139550
149550
159460
169460
179460
189370
199271
209181
219091
229091
2389101
2488111
2586122
2686122
2785132
2884142
2982153
3081163
3181163

Wind in May

Winds average 11 km/h in May.

Across May, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

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 4:40 AM to 3:56 AM, and sunset from 7:10 PM to 7:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:407:10
214.64:387:12
314.64:367:13
414.74:347:15
514.74:327:17
614.84:307:18
714.94:297:20
814.94:277:22
915.04:257:23
1015.04:237:25
1115.14:227:26
1215.14:207:28
1315.24:197:29
1415.24:177:31
1515.34:157:32
1615.34:147:34
1715.44:137:35
1815.44:117:37
1915.54:107:38
2015.54:087:40
2115.64:077:41
2215.64:067:43
2315.74:057:44
2415.74:037:45
2515.74:027:47
2615.84:017:48
2715.84:007:49
2815.93:597:51
2915.93:587:52
3015.93:577:53
3116.03:567:54

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.04 kWh/m².

For context, solar energy here swings from a low near 0.64 kWh/m² to a high of 5.27 kWh/m² in June across the year — May's 5.04 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in May

Is May a good time to visit Bolesławiec?

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

5.6
Sightseeing
5th-best month of the year
2.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Bolesławiec for sightseeing.

What to pack for Bolesławiec in May

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

In May, Bolesławiec sees daytime highs around 18°C and nights near 9°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

UV index in Bolesławiec in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bolesławiec 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 21 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 21UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun7Very high
Jul7High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Bolesławiec 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 Bolesławiec is worst in June — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJun 1716 µg/m³Dec 1210 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar16Moderate
Apr15Moderate
May15Moderate
Jun16Moderate
Jul15Moderate
Aug15Moderate
Sep13Moderate
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Bolesławiec?

Bolesławiec sits at 51.3°N, 15.6°E, 197 m above sea level, in Poland. The nearest listed city is Lubań, 25 km away.

ZgorzelecLegnicaJelenia GóraGörlitzŻagańPolkowice

Topography around Bolesławiec

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

Within 3 km, the terrain around Bolesławiec has only modest variations in elevation — a maximum elevation change of 96 m around an average of 200 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 203 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,572 m.

The land around Bolesławiec is covered by trees (38%), cropland (22%) and artificial surfaces (21%) within 3 km, trees (52%) and cropland (35%) within 16 km, and trees (50%) and cropland (30%) within 80 km.

3 km
96 m
16 km
203 m
80 km
1,572 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Lubań 25 km · Złotoryja 29 km · Zgorzelec 41 km · Legnica 42 km · Jelenia Góra 42 km · Görlitz 42 km · Żagań 43 km · Polkowice 44 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 Bolesławiec (51.2642°, 15.5697°, elevation 197 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).