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Contents
- The climate of Bologna
- The best time to visit Bologna
- The worst time to visit Bologna
- Spring weather in Bologna
- Summer weather in Bologna
- Autumn weather in Bologna
- Winter weather in Bologna
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The city center of the iconic old town of Bologna in Italy
The climate of Bologna
Bologna, located in Northern Italy, sits within the temperate marine west coast climate zone, identified in the Köppen climate classification as Cfb. This designation reflects the city's long, hot summers and short, damp winters. The air pressure hovers just over 1014 mb throughout the year, ensuring a consistent atmospheric baseline.
Across the months, Bologna experiences a significant fluctuation in temperatures, with the highest average temperature peaking at 31.3°C (88.3°F) in July and August, while in January the average low is 1.3°C (34.3°F). Bologna's hours of daylight range from 8.9 hours in December to over 15 hours in June and July, offering bright, long summer days.
Within this temperate framework, some conditions are distinctly noteworthy. The city struggles with a high relative humidity around 79% in January and February before dipping to 58% in August. The region typically deals with precipitation throughout the year, with peak average rainfall of 60mm (2.36") in November and lows around 26mm (1.02") in January. Furthermore, snowfall is limited to the first quarter of the year, highest at 32mm (1.26") in February with a complete absence from April to December.
Across the months, Bologna experiences a significant fluctuation in temperatures, with the highest average temperature peaking at 31.3°C (88.3°F) in July and August, while in January the average low is 1.3°C (34.3°F). Bologna's hours of daylight range from 8.9 hours in December to over 15 hours in June and July, offering bright, long summer days.
Within this temperate framework, some conditions are distinctly noteworthy. The city struggles with a high relative humidity around 79% in January and February before dipping to 58% in August. The region typically deals with precipitation throughout the year, with peak average rainfall of 60mm (2.36") in November and lows around 26mm (1.02") in January. Furthermore, snowfall is limited to the first quarter of the year, highest at 32mm (1.26") in February with a complete absence from April to December.
The best time to visit Bologna
Considering the aforementioned climatic conditions, the most pleasant period to explore Bologna arguably falls from May to June. During this timeframe, temperatures remain consistently between 18.6°C (65.5°F) to 22.3°C (72.1°F), providing agreeable conditions for outdoor travel. Furthermore, daylight is plentiful, averaging between 14.8 hours to 15.5 hours, maximizing the potential for sightseeing. This period is also marked by the city's lowest humidity levels of the year, offering comfortable ambience.
The worst time to visit Bologna
Those planning to travel Bologna in November could face challenges. Accumulating an average rainfall of 60mm (2.36") over 10.9 days, this month is characterized by pronounced wet weather. The shorter days during this month, averaging 9.6 hours of daylight, combined with decreased sunshine hours hinder outdoor activities. Moreover, Bologna witnesses a dip in visibility to just 9km (5.6mi) in November, which has potential impact on sightseeing plans.
Spring weather in Bologna
Spring ushers in warmer climes to Bologna as temperatures climb from an average high of 14°C (57.2°F) in March to 22.3°C (72.1°F) by May. Residents and tourists alike can relish an increasing amount of sunlight during this period, with an elevation from 11.9 daylight hours in March to 14.8 in May. However, there is an upswing in precipitation, averaging 57mm (2.24") in May. With relatively balanced weather conditions, spring prompts a vibrant bloom in the city.
Summer weather in Bologna
Summers in Bologna signify an escape from the spring showers into a dry season. Temperatures often rise to a comfortable 27.6°C (81.7°F) in June, reaching up to 31.3°C (88.3°F) during July and August. The city basks in a generous sunshine allowance, boasting an impressive 15.2 hours per day on average from June to July. While humidity dips to its yearly low, the city stays fresh due to a light breeze averaging about 7.6km/h (4.7mph) to 7.4km/h (4.6mph).
Autumn weather in Bologna
Autumn in Bologna introduces cooler weather as temperatures take a downward turn from 25.3°C (77.5°F) in September to a more chill 13.4°C (56.1°F) in November. A noteworthy shift in precipitation patterns occurs during this season, from as low as 29mm (1.14") rainfall in October, spiking to 60mm (2.36") in November. Daylight hours also dwindle from 12.5 hours per day in September to just 9.6 hours in November.
Winter weather in Bologna
Winter season in Bologna showcases a contrast of conditions. While the cold is tangible with low temperatures averaging 2.6°C (36.7°F) in December to 1.3°C (34.3°F) in January, the precipitation changes form from rain to snow. Snowfall is limited to the first quarter of the year, peaking around a mild average of 32mm (1.26") in February. Despite the winter chill, sunshine hours persist slightly above an average of 5.6 hours daily in December and February, illuminating the city under its cooler climate.
Weather in January
Winter is in full swing in Bologna, Italy, during January. The cold weather is accompanied by a high relative humidity of 79%. Temperatures during this time are at their lowest with a minimum of 1.3°C (34.3°F) and a maximum of 7.1°C (44.8°F). Weather in January »
Weather in February
As Bologna transitions from January to February, the wintry chill remains, but with an increased maximum temperature of 9.1°C (48.4°F). The snowfall intensity drops to 32mm (1.26") compared to the January. A certain liveliness comes back to the city as the amount of daylight increases notably. Weather in February »
Weather in March
In March, Bologna basks in the advent of spring. The weather witnesses an expansion of the temperature range from the previous month, varying between 5.3°C (41.5°F) and 14°C (57.2°F). The city begins to defrost as the snowfall ceases and sunlight stays out even longer. Weather in March »
Weather in April
Stepping into April, Bologna experiences amplified daylight hours that amount to 13.5. The temperature shows a predictable incline to a maximum of 18.6°C (65.5°F), paving the way for revitalising weather. With the vanishing of snowfall, bright, sun-drenched days define the cityscape. Weather in April »
Weather in May
As May unveils itself, Bologna’s weather takes an exciting turn towards summer. The maximum temperature spikes to an energising 22.3°C (72.1°F). This month drenches the city in the highest amount of rainfall in the year, recording 57mm (2.24"). Weather in May »
Weather in June
In June, Bologna fully embraces summer, offering longer daylight hours than any other month, reaching up to 15.5 hours. Signaling the beginning of holiday season, the maximum temperature in June rises to 27.6°C (81.7°F). The city is swamped with effervescent energy due to the warmer climates and extended sunshine duration. Weather in June »
Weather in July
The city of Bologna, in the deep summer month of July, gets subjected to the hottest days of the year, registering a peak temperature of 31.1°C (88°F). The decrease in humidity to 61% makes the weather more tolerable during the sizzling summer days. Weather in July »
Weather in August
August witnesses the continuity of the searing summer heat in Bologna with the temperature almost at par with July, peaking at 31.3°C (88.3°F). This month is one of the driest periods in Bologna with just 27mm (1.06") of rainfall. Weather in August »
Weather in September
Bologna sees a substantial drop in temperature in September, as it descends to a maximum of 25.3°C (77.5°F). Signalling the start of autumn, September guarantees an increase in the relative humidity to 67%. Despite the decline in temperature from August, there is a continuation of warm and clear weather conditions. Weather in September »
Weather in October
With October rolls in the marked autumn weather. Bologna experiences a further dip in temperature to a still pleasant maximum of 19.5°C (67.1°F). The city witnesses less rainfall than September. As the leaves transition from green to brown, there's an increased occurrence of overcast skies. Weather in October »
Weather in November
November is characterized by a further drop in temperature, reaching a high of only 13.4°C (56.1°F). This month brings the highest relative humidity of the year in Bologna, soaring to 82%. The decreasing temperature ushers in the winter season, and shorter days are more pronounced, as daylight reduces significantly. Weather in November »
Weather in December
The month of December ushers in full-fledged winter in Bologna, experiencing a substantial decrease in temperature to a high of only 8.1°C (46.6°F). The city’s atmosphere during December is unmistakably Christmassy, despite a minimal amount of snowfall of 12mm (0.47"). Weather in December »
[Resources]Frequently asked questions
What part of the year is the coldest in Bologna?
In Bologna, January is known for its average lowest temperatures, reaching a high of 7.1°C (44.8°F) and a low of 1.3°C (34.3°F).
What is the driest month in Bologna?
January is the month with the least rainfall. Rain falls for 8.2 days and accumulates 26mm (1.02") of precipitation.
How much does it rain in Bologna?
Throughout the year, in Bologna, Italy, there are 128.5 rainfall days, and 464mm (18.27") of precipitation is accumulated.
When does it snow in Bologna?
January through March and December are months with snowfall in Bologna, Italy.
How many days does it snow in Bologna?
In Bologna, Italy, during the entire year, snow falls for 4.5 days and aggregates up to 86mm (3.39") of snow.
What are the months with the lowest UV index in Bologna?
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the snowiest month in Bologna?
February is the month with the most snowfall in Bologna. Snow falls for 1.4 days and accumulates 32mm (1.26") of snow.
What is the month with the least sunshine in Bologna?
The month with the least sunshine in Bologna, Italy, is February, with an average of 5.3h of sunshine.
When it does not snow in Bologna?
April through November are months without snowfall in Bologna, Italy.
When are the longest days in Bologna?
June has the longest days of the year in Bologna, Italy, with an average of 15h and 30min of daylight.
What month has the most sunshine in Bologna?
July has the most sunshine of the year in Bologna, with an average of 11.7h of sunshine.
What is the month with the highest UV index in Bologna?
The month with the highest UV index in Bologna is July, with an average maximum UV index of 7.
What time of the year is the hottest in Bologna?
August is the month when Bologna, Italy, experiences its warmest temperatures, averaging a high of 31.3°C (88.3°F) and a low of 18.6°C (65.5°F).
What is the least humid month in Bologna?
The least humid month in Bologna is August, with an average relative humidity of 58%.
When is Daylight Saving Time (DST) in Bologna?
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
What is the most humid month in Bologna?
With an average relative humidity of 82%, November is the most humid month.
What is the rainiest month in Bologna?
November is the month with the most rainfall. Rain falls for 10.9 days and accumulates 60mm (2.36") of precipitation.
What is the month with the shortest days in Bologna?
December has the shortest days of the year, with an average of 8h and 54min of daylight.
Average temperature
Bologna, Italy
The warmest month (with the highest average high temperature) is August (31.3°C).
The month with the lowest average high temperature is January (7.1°C).
The month with the highest average low temperature is August (18.6°C).
The coldest month (with the lowest average low temperature) is January (1.3°C).
Average pressure
Bologna, Italy
- Average pressure in January:
1016.9mbar - Average pressure in February:
1014.9mbar - Average pressure in March:
1014.9mbar - Average pressure in April:
1014.2mbar - Average pressure in May:
1014mbar - Average pressure in June:
1013.9mbar
- Average pressure in July:
1013.7mbar - Average pressure in August:
1014.7mbar - Average pressure in September:
1015.9mbar - Average pressure in October:
1017mbar - Average pressure in November:
1014.9mbar - Average pressure in December:
1018.9mbar
The month with the highest atmospheric pressure is December (1018.9mbar).
The month with the lowest atmospheric pressure is July (1013.7mbar).
Average wind speed
Bologna, Italy
- Average wind speed in January:
7km/h - Average wind speed in February:
8.2km/h - Average wind speed in March:
8.8km/h - Average wind speed in April:
8.5km/h - Average wind speed in May:
8.4km/h - Average wind speed in June:
7.9km/h
- Average wind speed in July:
7.6km/h - Average wind speed in August:
7.4km/h - Average wind speed in September:
7.5km/h - Average wind speed in October:
6.9km/h - Average wind speed in November:
6.9km/h - Average wind speed in December:
6.5km/h
The windiest month (with the highest average wind speed) is March (8.8km/h).
The calmest month (with the lowest average wind speed) is December (6.5km/h).
Average humidity
Bologna, Italy
The month with the highest relative humidity is November (82%).
The month with the lowest relative humidity is August (58%).
Average rainfall
Bologna, Italy
The wettest month (with the highest rainfall) is November (60mm).
The driest month (with the least rainfall) is January (26mm).
Average rainfall days
Bologna, Italy
- Average rainfall days in January:
8.2 days - Average rainfall days in February:
9.5 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
14.7 days - Average rainfall days in June:
12.8 days
- Average rainfall days in July:
11.2 days - Average rainfall days in August:
9.3 days - Average rainfall days in September:
10.3 days - Average rainfall days in October:
9.3 days - Average rainfall days in November:
10.9 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (8.2 days).
Average snowfall
Bologna, Italy
The month with the highest snowfall is February (32mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days
Bologna, Italy
- Average snowfall days in January:
1.5 days - Average snowfall days in February:
1.4 days - Average snowfall days in March:
0.8 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.8 days
The month with the highest number of snowfall days is January (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Bologna, Italy
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 3min
- Average daylight in July:
15h and 1min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
5h and 4min - Average sunshine in February:
5h and 2min - Average sunshine in March:
7h and 4min - Average sunshine in April:
9h and 4min - Average sunshine in May:
10h and 2min - Average sunshine in June:
11h and 3min
- Average sunshine in July:
11h and 4min - Average sunshine in August:
11h and 4min - Average sunshine in September:
10h and 1min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 4min - Average sunshine in December:
5h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days
Bologna, Italy
- Average sunshine days in January:
20.8 days - Average sunshine days in February:
16.7 days - Average sunshine days in March:
18.5 days - Average sunshine days in April:
14.3 days - Average sunshine days in May:
12.5 days - Average sunshine days in June:
13.8 days
- Average sunshine days in July:
14.6 days - Average sunshine days in August:
16.9 days - Average sunshine days in September:
17.7 days - Average sunshine days in October:
19.9 days - Average sunshine days in November:
16.5 days - Average sunshine days in December:
20.2 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is May (12.5 days).
Average UV index
Bologna, Italy
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover
Bologna, Italy
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility
Bologna, Italy
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).
Bologna, Italy
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