Bologna, Italy Climate & Monthly Averages
Bologna has a humid subtropical climate. July is the hottest month, averaging 89° by day; January is the coldest at 47°.
Bologna's climate is a story of contrasts
Seasons are the whole story in Bologna. The gap between an average July and an average January is 22°C - hot, humid summers and generally mild winters - which in practice means 89°F (32°C) afternoons at one end of the calendar and 47°F (8°C) at the other.
July
89° by day 69° at nightJanuary
47° by day 33° at nightThe two ends of the year
July is the brightest month at 13.5 hours of sun a day, against an annual average of 9.3. July is the warm end of the year, averaging 89°F (32°C) by day and 69°F (21°C) overnight. January is the coolest month, with highs of 47°F (8°C) and lows near 33°F (1°C). Snow falls on roughly 4 days a year, mostly December through March.
The wettest month is May (5.2 inches (132 mm) across 13 days) and the driest July. Three of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is September through October. The gridded 2015-2024 daily record for this location tops out at 105°F (40°C) and bottoms at 9°F (-13°C) - decade extremes, not all-time station records.
More climate facts for Bologna
- Hottest month: July - highs near 89°F (32°C)
- Coldest month: January - highs near 47°F (8°C)
- Decade extremes (2015-2024): 105°F (40°C) high · 9°F (-13°C) low
- Wettest month: May (13 rainy days) · Sunniest: July (13.5 h sun/day)
- Climate type: humid subtropical
- Annual swing: 22°C between the average warmest and coolest month · day to night: 9°C
- Snow: about 4 days a year
- Months averaging 30°C or hotter: 2
- Average humidity: 71%
Four distinct parts of the year in Bologna
Spring (March through May)
Spring stays on the cool side of mild here - highs near 65°F (18°C), nights near 48°F (9°C), and expect showers on roughly 30 days across the season. Daylight is generous - around 10.1 hours of sun a day.
Summer (June through August)
Summer is hot here - highs near 87°F (30°C), nights near 67°F (20°C), and expect showers on roughly 23 days across the season. Daylight is generous - around 12.9 hours of sun a day. With the moisture factored in, afternoons feel hotter than the reading suggests - the humidity and dew point converter shows why.
Fall (September through November)
Fall in Bologna is mild, with daytime highs averaging 67°F (20°C) and nights around 52°F (11°C); expect showers on roughly 28 days across the season.
Winter (December through February)
Winter runs cold here - highs near 49°F (9°C), nights near 35°F (2°C), and expect showers on roughly 23 days across the season, plus about 4 snowy days.
Bologna temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.
Choosing a season in Bologna
Best time to visit Bologna
September to October and April is the sweet spot for Bologna - the dry season is running but the afternoons are still bearable. Expect 74°F (23°C) in the afternoon and around 9 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in September.
What to pack
Pack for Bologna with light clothing for the warm months, a warm jacket and layers for the cooler season and a compact umbrella or rain shell. July nights average 69°F (21°C), so evenings rarely match the afternoons.
Monthly highs, lows and seasonal change
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 47° | 33° | 6 | 1.7 in | 6.2 h/day | 9.2 h | 20% | 81% |
| February | 52° | 37° | 8 | 3.5 in | 7.0 h/day | 10.4 h | 29% | 78% |
| March | 58° | 41° | 8 | 2.3 in | 8.9 h/day | 11.8 h | 25% | 70% |
| April | 65° | 47° | 9 | 2.3 in | 10.5 h/day | 13.4 h | 29% | 67% |
| May | 72° | 55° | 13 | 5.2 in | 10.8 h/day | 14.8 h | 42% | 71% |
| June | 83° | 64° | 8 | 2.5 in | 13.1 h/day | 15.5 h | 26% | 62% |
| July | 89° | 69° | 7 | 1.5 in | 13.5 h/day | 15.2 h | 24% | 56% |
| August | 88° | 68° | 8 | 1.9 in | 12.1 h/day | 14.0 h | 25% | 58% |
| September | 78° | 61° | 9 | 3.1 in | 10.3 h/day | 12.4 h | 30% | 67% |
| October | 68° | 53° | 9 | 3.0 in | 7.7 h/day | 10.9 h | 30% | 78% |
| November | 56° | 43° | 10 | 3.6 in | 6.0 h/day | 9.5 h | 33% | 83% |
| December | 48° | 36° | 8 | 2.5 in | 5.4 h/day | 8.8 h | 27% | 85% |
Bologna from the coldest month to the hottest
Each card shows the average high and low. The bar places that month between Bologna's coldest night and warmest afternoon.
January
- Rain
- 6 days
- Sunshine
- 6.2 h
- Daylight
- 9.2 h
- Snow
- 1 day
February
- Rain
- 8 days
- Sunshine
- 7.0 h
- Daylight
- 10.4 h
- Snow
- 1 day
March
- Rain
- 8 days
- Sunshine
- 8.9 h
- Daylight
- 11.8 h
April
- Rain
- 9 days
- Sunshine
- 10.5 h
- Daylight
- 13.4 h
May
- Rain
- 13 days
- Sunshine
- 10.8 h
- Daylight
- 14.8 h
June
- Rain
- 8 days
- Sunshine
- 13.1 h
- Daylight
- 15.5 h
July
- Rain
- 7 days
- Sunshine
- 13.5 h
- Daylight
- 15.2 h
August
- Rain
- 8 days
- Sunshine
- 12.1 h
- Daylight
- 14.0 h
September
- Rain
- 9 days
- Sunshine
- 10.3 h
- Daylight
- 12.4 h
October
- Rain
- 9 days
- Sunshine
- 7.7 h
- Daylight
- 10.9 h
November
- Rain
- 10 days
- Sunshine
- 6.0 h
- Daylight
- 9.5 h
December
- Rain
- 8 days
- Sunshine
- 5.4 h
- Daylight
- 8.8 h
- Snow
- 1 day
Looking for warmer alternatives? Browse warm places by month, or compare Bologna's coolest part of the year: January, December, February.
Where Bologna sits among other climates
- Bologna sits close to the middle of our dataset on most measures: 58°F (15°C) as an annual average, 33.1 inches (840 mm) of precipitation and 9.3 hours of sun a day.
These comparisons use the same ten-year window for every city in the dataset.