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Ostrów Wielkopolski, Poland climate

Cfb Oceanic / temperate

Ostrów Wielkopolski has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 77°F, while the coldest is January averaging around 26°F at night. Around 20 inches of precipitation falls each year, peaking in July (2.9 inches) and easing off in February (1.0 inches). At latitude 52°N, day length swings from 7.6 hours in midwinter to 16.4 hours at midsummer.

☀️ Summers

Mild

Highs near 77°F in July.

❄️ Winters

Cold

Lows near 26°F in January.

🌧️ Rain

Fairly dry

About 20 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)

Ostrów Wielkopolski climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	35	38	46	58	67	73	77	77	67	56	45	37
Avg temp (°F)	31	33	39	49	57	63	67	67	58	49	40	33
Avg low (°F)	26	28	32	40	48	54	57	57	50	42	35	29
Precipitation (in)	1.1	1.0	1.3	1.1	2.1	2.2	2.9	2.1	1.9	1.5	1.2	1.2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	35	38	46	58	67	73
Avg temp (°F)	31	33	39	49	57	63
Avg low (°F)	26	28	32	40	48	54
Precipitation (in)	1.1	1.0	1.3	1.1	2.1	2.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	77	77	67	56	45	37
Avg temp (°F)	67	67	58	49	40	33
Avg low (°F)	57	57	50	42	35	29
Precipitation (in)	2.9	2.1	1.9	1.5	1.2	1.2

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	75	74	69	64	65	67	65	61	64	70	76	74
Relative humidity (%)	93	89	82	74	71	67	65	63	71	81	91	93
Wind speed (mph)	8.0	7.9	7.6	6.5	6.0	5.9	5.8	5.5	6.2	6.7	6.9	7.5

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	75	74	69	64	65	67
Relative humidity (%)	93	89	82	74	71	67
Wind speed (mph)	8.0	7.9	7.6	6.5	6.0	5.9

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	65	61	64	70	76	74
Relative humidity (%)	65	63	71	81	91	93
Wind speed (mph)	5.8	5.5	6.2	6.7	6.9	7.5

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Kalisz, a weather station, about 24 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 →