Ostrava, Czechia climate

Cfb Oceanic / temperate

Ostrava has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 78°F, while the coldest is January averaging around 24°F at night. Around 26 inches of precipitation falls each year, peaking in June (3.5 inches) and easing off in February (1.0 inches).

☀️ Summers

Mild

Highs near 78°F in July.

❄️ Winters

Cold

Lows near 24°F in January.

🌧️ Rain

Moderate rainfall

About 26 in of rain a year.

Wettest in June

⛅ 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)

Ostrava climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	35	39	47	59	67	74	78	77	67	57	46	37
Avg temp (°F)	30	32	39	48	56	63	67	66	58	49	40	32
Avg low (°F)	24	25	31	38	46	53	56	55	48	41	34	27
Precipitation (in)	1.1	1.0	1.3	1.7	3.1	3.5	3.4	2.7	2.9	2.1	1.8	1.3

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	35	39	47	59	67	74
Avg temp (°F)	30	32	39	48	56	63
Avg low (°F)	24	25	31	38	46	53
Precipitation (in)	1.1	1.0	1.3	1.7	3.1	3.5

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	78	77	67	57	46	37
Avg temp (°F)	67	66	58	49	40	32
Avg low (°F)	56	55	48	41	34	27
Precipitation (in)	3.4	2.7	2.9	2.1	1.8	1.3

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	73	74	71	67	69	69	65	61	66	70	74	73
Relative humidity (%)	95	93	86	79	78	75	70	68	75	84	91	95
Wind speed (mph)	6.9	6.8	6.5	5.5	5.2	4.7	4.6	4.4	4.9	5.5	6.2	6.7

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	73	74	71	67	69	69
Relative humidity (%)	95	93	86	79	78	75
Wind speed (mph)	6.9	6.8	6.5	5.5	5.2	4.7

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	65	61	66	70	74	73
Relative humidity (%)	70	68	75	84	91	95
Wind speed (mph)	4.6	4.4	4.9	5.5	6.2	6.7

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Mosnov, a weather station, about 20 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 →