Opole weather in May

In May, Opole sees average daytime highs of 19°C and overnight lows near 9°C, with 69 mm of rain across 12 wet days and about 15.2 hours of daylight. It is the 5th-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 15 h 54 min by month's end. Set against the rest of the year, May is Opole's 6th-clearest and 8th-windiest month. For the whole year in context, see Opole's year-round climate.

Daytime high
19°
5th warmest
Overnight low
8th coldest
Rainfall
69 mm
12 wet days
Daylight
15 h 18 min
4:07 AM – 7:22 PM
Cloud cover
64%
6th clearest
Wind
12 km/h
8th windiest
Solar energy
5.09 kWh/m²
Travel score
5.9
out of 10

Opole is city with powiat rights of Poland.

Air quality
Elevated
PM2.5 18 µg/m³ · 2019
Density
1,327/km²
people per km²
Founded
1217

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 Opole 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
2188
3188
4188
5188
6188
7198
8198
9198
10198
11199
12199
13199
14199
15199
16199
17199
18199
19209
202010
212010
222010
232010
242010
252010
262010
272110
282111
292111
302111
312111

How May really feels in Opole

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.

Opole weather by month

How May compares with the rest of the year at a glance. May is the 5th-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°4310.55.48.30.0
Feb / -2°3794.89.70.0
Mar / 4911.23.111.51.3
Apr14° / 439.80.913.54.3
May19° / 6912015.25.9
Jun23° / 13°7812.1016.26.3
Jul25° / 14°9813015.86.5
Aug25° / 14°6110.4014.36.8
Sep19° / 10°6410.4012.46.0
Oct14° / 5010.10.310.43.8
Nov / 449.828.71.1
Dec / -2°43104.37.80.0

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 16% of May, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34258
44258
54159
64159
74159
84060
93961
103961
113961
123862
133961
144060
154060
164060
174060
183961
193961
203961
213961
224060
234159
244159
254159
264258
274357
284357
294357
304456
314456

Chance of precipitation in May

Any precipitation

Opole gets around 69 mm of rain over 12 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 38% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
336
437
537
638
738
839
939
1039
1140
1240
1340
1440
1540
1639
1739
1839
1939
2039
2138
2238
2338
2438
2538
2638
2738
2839
2939
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 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19820
29820
39820
49730
59730
69640
79640
89550
99550
109460
119460
129370
139370
149280
159280
169280
179190
189190
1989101
2089101
2188111
2287121
2387121
2485132
2584142
2683152
2781163
2881163
2980173
3078184
3177194

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
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 30 min at the start of May to 15 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over May. Sunrise moves from 4:32 AM to 3:49 AM, and sunset from 6:59 PM to 7:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:326:59
214.54:307:01
314.64:287:02
414.64:267:04
514.74:257:05
614.74:237:07
714.84:217:09
814.84:197:10
914.94:187:12
1015.04:167:13
1115.04:147:15
1215.14:137:16
1315.14:117:18
1415.24:107:19
1515.24:087:21
1615.34:077:22
1715.34:057:24
1815.44:047:25
1915.44:037:27
2015.44:017:28
2115.54:007:29
2215.53:597:31
2315.63:587:32
2415.63:567:33
2515.73:557:35
2615.73:547:36
2715.73:537:37
2815.83:527:38
2915.83:517:40
3015.83:507:41
3115.93:497:42

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.09 kWh/m².

For context, solar energy here swings from a low near 0.69 kWh/m² to a high of 5.36 kWh/m² in June across the year — May's 5.09 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.4Bright
315.4Bright
Planning a trip in May

Is May a good time to visit Opole?

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 Opole for sightseeing.

What to pack for Opole in May

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

In May, Opole 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 Opole 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 Opole peaks around June 20 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 20 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 20UV 7Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun7High
Jul7High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

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

Seasonal pattern from CAMS reanalysis, scaled to Opole's WHO annual average of 18 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1623 µg/m³Dec 1512 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb16Moderate
Mar21Moderate
Apr21Moderate
May21Moderate
Jun23Moderate
Jul21Moderate
Aug21Moderate
Sep18Moderate
Oct15Moderate
Nov14Moderate
Dec12Moderate
Location & terrain

Where is Opole?

Opole sits at 50.7°N, 17.9°E, 173 m above sea level, in Poland. The nearest listed city is Krapkowice, 22 km away.

KluczborkKędzierzyn-KoźlePrudnikNysaNamysłów

Topography around Opole

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

Within 3 km, the terrain around Opole has only modest variations in elevation — a maximum elevation change of 44 m around an average of 162 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 104 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,297 m.

The land around Opole is covered by artificial surfaces (41%) and trees (22%) within 3 km, trees (40%) and cropland (37%) within 16 km, and cropland (50%) and trees (37%) within 80 km.

3 km
44 m
16 km
104 m
80 km
1,297 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Krapkowice 22 km · Strzelce Opolskie 32 km · Brzeg 39 km · Kluczbork 39 km · Kędzierzyn-Koźle 42 km · Prudnik 46 km · Nysa 47 km · Namysłów 47 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 Opole (50.6712°, 17.926°, elevation 173 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).