Climate averages 1991–2020
Bologna weather
in December.
A cool, moderately wet month: the 11th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Bologna: daytime highs average 8.7°C and nights cool to about 1.4°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 69 mm of rain on roughly 9 days, which makes December a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 54 min on an average December day.
The nearest other city in this atlas is Modena (37 km away). In December its highs average 8.2°C, 0.5°C cooler than Bologna, with 59 mm of rain.
Among the 79 cities listed in Italy, Bologna ranks 50th of 79 for the warmest December highs and joint 25th of 79 for the driest December (rainfall, lowest first). The mean December high of those 79 cities is 10.5°C; Bologna is 1.8°C cooler than that mean.
From December to January, average highs fall by 0.5°C to 8.2°C, and monthly rainfall falls from 69 mm to 45 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Bologna climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.2°C0.5°C | 0.5°C | 45 | 7.4 | 9.29 h |
| February | 10.1°C0.6°C | 0.6°C | 65 | 7.5 | 10.410 h |
| March | 14.5°C4.1°C | 4.1°C | 63 | 8.1 | 11.912 h |
| April | 18.2°C7.8°C | 7.8°C | 76 | 10.2 | 13.413 h |
| May | 23.0°C12.3°C | 12.3°C | 76 | 9.4 | 14.815 h |
| June | 27.8°C16.6°C | 16.6°C | 60 | 7.7 | 15.515 h |
| July | 30.8°C19.4°C | 19.4°C | 46 | 6.3 | 15.215 h |
| August | 30.5°C19.5°C | 19.5°C | 53 | 7.6 | 14.014 h |
| September | 24.9°C15.1°C | 15.1°C | 68 | 8.0 | 12.613 h |
| October | 19.2°C10.8°C | 10.8°C | 76 | 8.7 | 11.011 h |
| November | 13.3°C6.0°C | 6.0°C | 91 | 10.0 | 9.610 h |
| December, selected | 8.7°C1.4°C | 1.4°C | 69 | 8.7 | 8.99 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Modena in DecemberItaly · 37 kmHigh 8.2°C · Low 0.9°C · 59 mm rain
- Ferrara in DecemberItaly · 44 kmHigh 8.5°C · Low 1.4°C · 57 mm rain
- Carpi in DecemberItaly · 49 kmHigh 7.9°C · Low 1.1°C · 59 mm rain
- Reggio nell'Emilia in DecemberItaly · 60 kmHigh 7.7°C · Low 0.8°C · 65 mm rain
- Forlì in DecemberItaly · 64 kmHigh 9.6°C · Low 1.8°C · 65 mm rain
- Ravenna in DecemberItaly · 69 kmHigh 9.4°C · Low 3.1°C · 66 mm rain
- Pistoia in DecemberItaly · 71 kmHigh 9.6°C · Low 2.2°C · 108 mm rain
- Prato in DecemberItaly · 71 kmHigh 9.6°C · Low 2.8°C · 108 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Bologna) is explained once on the Bologna year overview and on the Sources, method and limits page.