Olomouc weather in May

In May, Olomouc sees average daytime highs of 19°C and overnight lows near 9°C, with 71 mm of rain across 12.7 wet days and about 15.1 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 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 24 min at the start of May to 15 h 42 min by month's end. Set against the rest of the year, May is Olomouc's 6th-clearest and 7th-windiest month. For the whole year in context, see Olomouc's year-round climate.

Daytime high
19°
5th warmest
Overnight low
8th coldest
Rainfall
71 mm
12.7 wet days
Daylight
15 h 06 min
4:13 AM – 7:21 PM
Cloud cover
62%
6th clearest
Wind
11 km/h
7th windiest
Solar energy
5.16 kWh/m²
Travel score
5.7
out of 10

Olomouc is city in Czechia.

Air quality
Elevated
PM2.5 17.8 µg/m³ · 2019
Density
963/km²
people per km²
Founded
1017

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 20°C by the end.

A typical May day in Olomouc 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 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
2187
3188
4188
5188
6188
7188
8188
9188
10188
11188
12188
13188
14189
15189
16199
17199
18199
19199
20199
21199
22199
231910
241910
252010
262010
272010
282010
292010
302011
312111

How May really feels in Olomouc

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.

Olomouc 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 / -4°348.85.58.40.0
Feb / -3°307.649.80.0
Mar / 429.42.411.51.4
Apr14° / 428.80.613.44.2
May19° / 7112.7015.15.7
Jun22° / 12°8212.20166.2
Jul24° / 14°9212.9015.66.5
Aug24° / 14°7110.7014.26.8
Sep19° / 10°679.8012.46.0
Oct13° / 488.80.310.53.6
Nov / 438.728.90.9
Dec / -2°398.84.380.0

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 19% of May, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14456
24456
34357
44456
54456
64357
74357
84357
94258
104258
114357
124357
134357
144357
154357
164456
174357
184357
194357
204456
214456
224456
234555
244456
254555
264555
274654
284753
294654
304654
314753

Chance of precipitation in May

Any precipitation

Olomouc gets around 71 mm of rain over 12.7 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 40% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
236
337
438
539
639
740
840
941
1041
1141
1241
1341
1441
1541
1641
1741
1841
1941
2040
2140
2240
2340
2440
2540
2640
2740
2840
2940
3041
3141

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 (%)
19820
29820
39820
49730
59730
69730
79640
89640
99550
109550
119550
129460
139460
149460
159460
169370
179370
189280
199190
209190
2190100
2288111
2387121
2486131
2585141
2684151
2782171
2880182
2979192
3077203
3176213

Wind in May

Winds average 11 km/h in May.

Across May, daily wind ranges from about 10 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
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 24 min at the start of May to 15 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 78 minutes over May. Sunrise moves from 4:37 AM to 3:57 AM, and sunset from 6:59 PM to 7:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.44:376:59
214.44:367:00
314.54:347:02
414.54:327:04
514.64:307:05
614.64:297:07
714.74:277:08
814.74:257:10
914.84:247:11
1014.84:227:12
1114.94:217:14
1214.94:197:15
1315.04:187:17
1415.04:167:18
1515.14:157:20
1615.14:137:21
1715.24:127:22
1815.24:117:24
1915.34:097:25
2015.34:087:27
2115.34:077:28
2215.44:067:29
2315.44:057:30
2415.54:037:32
2515.54:027:33
2615.54:017:34
2715.64:007:35
2815.63:597:37
2915.73:597:38
3015.73:587:39
3115.73:577:40

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 0.73 kWh/m² to a high of 5.5 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
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in May

Is May a good time to visit Olomouc?

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

5.7
Sightseeing
5th-best month of the year
2.3
Beach & pool
5th-best month of the year

May is a reasonable time to visit Olomouc for sightseeing.

What to pack for Olomouc in May

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

In May, Olomouc sees daytime highs around 19°C and nights near 9°C. Worth packing: rain gear and sun protection. About 13 days see rain.

rain gearsun protection

UV index in Olomouc 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 Olomouc peaks around June 22 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 22UV 7Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May6High
Jun7Very high
Jul7Very high
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Olomouc 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 Olomouc is worst in June — around 21 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Seasonal pattern from CAMS reanalysis, scaled to Olomouc's WHO annual average of 17.8 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1621 µg/m³Dec 1114 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb16Moderate
Mar21Moderate
Apr20Moderate
May20Moderate
Jun21Moderate
Jul20Moderate
Aug20Moderate
Sep18Moderate
Oct15Moderate
Nov14Moderate
Dec14Moderate
Location & terrain

Where is Olomouc?

Olomouc sits at 49.6°N, 17.3°E, 223 m above sea level, in Czechia. The nearest listed city is Prostějov, 17 km away.

KroměřížHraniceVyškovŠumperkBruntálOtrokovice

Topography around Olomouc

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

Within 3 km, the terrain around Olomouc has only modest variations in elevation — a maximum elevation change of 62 m around an average of 221 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 451 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,324 m.

The land around Olomouc is covered by artificial surfaces (47%) and trees (23%) within 3 km, cropland (61%) and trees (23%) within 16 km, and trees (44%) and cropland (36%) within 80 km.

3 km
62 m
16 km
451 m
80 km
1,324 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Prostějov 17 km · Přerov 21 km · Kroměříž 35 km · Hranice 35 km · Vyškov 40 km · Šumperk 46 km · Bruntál 46 km · Otrokovice 48 km

Czechia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 59% of US
price level, 2025
GDP per capita
$35,917
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
5.9
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 582
Religion
none 48%believers unaffiliated with a religious society 9%Roman Catholic 7%other believers belonging to a church or religious society 6%

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 Olomouc (49.5955°, 17.2518°, elevation 223 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).