Climate averages 1991–2020
Olomouc weather
in May.
A mild, moderately wet month: the 5th warmest and the joint 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Olomouc: daytime highs average 18.6°C and nights cool to about 8.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 71 mm of rain on roughly 13 days, which makes May a moderately wet month (the joint 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 20 min on an average May day.
The nearest other city in this atlas is Zlín (51 km away). In May its highs average 18.7°C, about as warm as Olomouc, with 81 mm of rain.
Among the 12 cities listed in Czechia, Olomouc ranks 5th of 12 for the warmest May highs and joint 5th of 12 for the driest May (rainfall, lowest first). The mean May high of those 12 cities is 18.4°C; Olomouc is 0.1°C warmer than that mean.
From May to June, average highs rise by 3.5°C to 22.1°C, and monthly rainfall rises from 71 mm to 82 mm.
The annual picture
May in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Olomouc climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.3°C-4.1°C | -4.1°C | 34 | 8.8 | 8.79 h |
| February | 3.6°C-3.5°C | -3.5°C | 31 | 7.7 | 10.110 h |
| March | 8.2°C-0.6°C | -0.6°C | 42 | 9.4 | 11.912 h |
| April | 14.2°C3.8°C | 3.8°C | 42 | 8.8 | 13.714 h |
| May, selected | 18.6°C8.8°C | 8.8°C | 71 | 12.7 | 15.315 h |
| June | 22.1°C12.6°C | 12.6°C | 82 | 12.2 | 16.216 h |
| July | 24.2°C14.6°C | 14.6°C | 91 | 12.9 | 15.816 h |
| August | 24.3°C14.5°C | 14.5°C | 71 | 10.7 | 14.414 h |
| September | 19.0°C10.4°C | 10.4°C | 67 | 9.8 | 12.713 h |
| October | 13.2°C6.0°C | 6.0°C | 48 | 8.8 | 10.811 h |
| November | 7.3°C2.0°C | 2.0°C | 43 | 8.7 | 9.29 h |
| December | 2.2°C-2.7°C | -2.7°C | 39 | 8.8 | 8.28 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Zlín in MayCzechia · 51 kmHigh 18.7°C · Low 9.4°C · 81 mm rain
- Brno in MayCzechia · 64 kmHigh 19.2°C · Low 9.7°C · 65 mm rain
- Ostrava in MayCzechia · 79 kmHigh 18.4°C · Low 8.8°C · 90 mm rain
- Havířov in MayCzechia · 88 kmHigh 18.0°C · Low 8.4°C · 99 mm rain
- Jastrzębie Zdrój in MayPoland · 103 kmHigh 18.2°C · Low 8.8°C · 85 mm rain
- Rybnik in MayPoland · 108 kmHigh 18.4°C · Low 8.8°C · 85 mm rain
- Žilina in MaySlovakia · 115 kmHigh 18.0°C · Low 8.6°C · 98 mm rain
- Pardubice in MayCzechia · 117 kmHigh 18.5°C · Low 8.8°C · 71 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Olomouc) is explained once on the Olomouc year overview and on the Sources, method and limits page.