Olomouc, Czechia climate

Cfb Oceanic / temperate

Olomouc has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 75°F, while the coldest is January averaging around 24°F at night. Around 25 inches of precipitation falls each year, peaking in July (2.9 inches) and easing off in November (1.3 inches).

☀️ Summers

Mild

Highs near 75°F in July.

❄️ Winters

Cold

Lows near 24°F in January.

🌧️ Rain

Moderate rainfall

About 25 in of rain a year.

Wettest in July

⛅ Sky & trend

Often cloudy

Cloudy skies much of the year.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Olomouc climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	32	36	44	56	64	70	75	75	64	53	42	34
Avg temp (°F)	28	31	38	48	55	62	65	65	56	47	38	30
Avg low (°F)	24	26	31	39	47	53	56	56	49	41	34	26
Precipitation (in)	2.1	2.5	1.4	1.7	2.4	2.6	2.9	2.8	2.3	1.6	1.3	1.7

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	32	36	44	56	64	70
Avg temp (°F)	28	31	38	48	55	62
Avg low (°F)	24	26	31	39	47	53
Precipitation (in)	2.1	2.5	1.4	1.7	2.4	2.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	75	75	64	53	42	34
Avg temp (°F)	65	65	56	47	38	30
Avg low (°F)	56	56	49	41	34	26
Precipitation (in)	2.9	2.8	2.3	1.6	1.3	1.7

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	75	74	70	65	67	69	65	61	65	72	77	76
Relative humidity (%)	95	91	85	78	75	70	66	65	73	83	91	95
Wind speed (mph)	7.4	7.6	7.3	6.4	6.1	5.6	5.5	5.1	5.8	6.2	6.8	7.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	75	74	70	65	67	69
Relative humidity (%)	95	91	85	78	75	70
Wind speed (mph)	7.4	7.6	7.3	6.4	6.1	5.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	65	61	65	72	77	76
Relative humidity (%)	66	65	73	83	91	95
Wind speed (mph)	5.5	5.1	5.8	6.2	6.8	7.1

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Luka, a weather station, about 23 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →