Bologna, Italy climate

Csa Hot-summer Mediterranean

Bologna has a seasonal mild-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is July with an average daily high near 31°C, while the coldest is January averaging around 0°C at night. Around 602 mm of precipitation falls each year, peaking in November (73 mm) and easing off in July (24 mm).

☀️ Summers

Hot

Highs near 31°C in July.

❄️ Winters

Cold

Lows near 0°C in January.

🌧️ Rain

Moderate rainfall

About 602 mm of rain a year.

Wettest in November

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

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)

Bologna climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	7	10	15	19	24	29	31	31	26	19	13	8
Avg temp (°C)	4	5	10	14	18	23	25	25	20	15	9	4
Avg low (°C)	0	1	4	8	13	17	19	19	15	11	6	1
Precipitation (mm)	29	51	49	58	64	61	24	29	52	69	73	43

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	7	10	15	19	24	29
Avg temp (°C)	4	5	10	14	18	23
Avg low (°C)	0	1	4	8	13	17
Precipitation (mm)	29	51	49	58	64	61

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	31	31	26	19	13	8
Avg temp (°C)	25	25	20	15	9	4
Avg low (°C)	19	19	15	11	6	1
Precipitation (mm)	24	29	52	69	73	43

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	67	61	58	59	58	48	35	37	48	61	70	67
Relative humidity (%)	87	82	76	73	66	59	52	53	65	77	86	88
Wind speed (m/s)	1.9	2.1	2.2	2.1	2.0	2.0	1.9	1.8	1.9	1.9	1.9	1.9

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	67	61	58	59	58	48
Relative humidity (%)	87	82	76	73	66	59
Wind speed (m/s)	1.9	2.1	2.2	2.1	2.0	2.0

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	35	37	48	61	70	67
Relative humidity (%)	52	53	65	77	86	88
Wind speed (m/s)	1.9	1.8	1.9	1.9	1.9	1.9

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Bologna, a weather station, about 6 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 →