Climate averages 1991–2020
Genoa weather
in December.
A cool, wet month: the 11th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Genoa: daytime highs average 10.3°C and nights cool to about 4.9°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 119 mm of rain on roughly 10 days, which makes December a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 55 min on an average December day.
The nearest other city in this atlas is Alessandria (62 km away). In December its highs average 7.0°C, 3.3°C cooler than Genoa, with 66 mm of rain.
Among the 79 cities listed in Italy, Genoa ranks 42nd of 79 for the warmest December highs and 69th of 79 for the driest December (rainfall, lowest first). The mean December high of those 79 cities is 10.5°C; Genoa is 0.2°C cooler than that mean.
From December to January, average highs fall by 0.7°C to 9.6°C, and monthly rainfall falls from 119 mm to 95 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
Genoa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.6°C3.9°C | 3.9°C | 95 | 8.9 | 9.39 h |
| February | 10.8°C4.0°C | 4.0°C | 73 | 8.2 | 10.410 h |
| March | 14.2°C6.6°C | 6.6°C | 87 | 9.5 | 11.912 h |
| April | 17.1°C9.6°C | 9.6°C | 105 | 12.6 | 13.413 h |
| May | 20.8°C13.5°C | 13.5°C | 103 | 13.2 | 14.815 h |
| June | 24.6°C17.4°C | 17.4°C | 82 | 10.9 | 15.515 h |
| July | 27.3°C19.9°C | 19.9°C | 56 | 9.0 | 15.215 h |
| August | 27.6°C20.3°C | 20.3°C | 67 | 10.6 | 14.014 h |
| September | 23.5°C16.5°C | 16.5°C | 124 | 11.0 | 12.613 h |
| October | 18.9°C12.9°C | 12.9°C | 165 | 12.6 | 11.011 h |
| November | 13.8°C8.5°C | 8.5°C | 191 | 12.1 | 9.710 h |
| December, selected | 10.3°C4.9°C | 4.9°C | 119 | 10.3 | 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
- Alessandria in DecemberItaly · 62 kmHigh 7.0°C · Low -0.1°C · 66 mm rain
- La Spezia in DecemberItaly · 78 kmHigh 11.2°C · Low 6.5°C · 145 mm rain
- Asti in DecemberItaly · 80 kmHigh 7.0°C · Low 0.2°C · 65 mm rain
- Piacenza in DecemberItaly · 93 kmHigh 7.2°C · Low 0.9°C · 73 mm rain
- Cremona in DecemberItaly · 117 kmHigh 7.1°C · Low 0.6°C · 65 mm rain
- Parma in DecemberItaly · 118 kmHigh 7.7°C · Low 0.7°C · 73 mm rain
- Novara in DecemberItaly · 119 kmHigh 7.0°C · Low -0.6°C · 79 mm rain
- Milan in DecemberItaly · 119 kmHigh 7.1°C · Low -0.1°C · 73 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 Genoa) is explained once on the Genoa year overview and on the Sources, method and limits page.