Genzano di Roma in Winter
In winter (December, January and February), Genzano di Roma sees average daytime highs around 12°C and overnight lows near 4°C, with 274 mm of precipitation over about 30 wet days across the season. It is the coldest season of the year and the 2nd-wettest season.
Across winter, daytime highs hold fairly steady around 12°C. The sky is clear or mostly clear about 41% of the time across winter, and the air most often feels dry.
Winter is Genzano di Roma's weakest season of the year to visit on our travel score. For the whole year in context, see Genzano di Roma's year-round climate.
- Avg daytime high
- 12°C
- coldest season of the year
- Avg overnight low
- 4°C
- Precipitation
- 274 mm
- 30 wet days
- Avg wind
- 8 km/h
- Travel score
- 3.1
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Genzano di Roma in Winter
Across winter, daytime highs hold fairly steady around 12°C.
A typical winter day in Genzano di Roma reaches about 12°C and drops to 4°C overnight. The warmest of the three months is December, the coolest January.
Genzano di Roma weather by month
How the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 11° / 3° | 78 | 9.6 | 0.3 | 9.3 | 2.9 |
| Feb | 12° / 4° | 82 | 9.8 | 0.6 | 10.3 | 3.2 |
| Mar | 15° / 6° | 88 | 10.3 | 0.1 | 11.7 | 4.5 |
| Apr | 18° / 9° | 94 | 12.7 | 0.1 | 13.1 | 5.4 |
| May | 22° / 13° | 75 | 10.1 | 0 | 14.3 | 6.8 |
| Jun | 26° / 16° | 46 | 7.7 | 0 | 15 | 7.3 |
| Jul | 29° / 19° | 29 | 5.2 | 0 | 14.7 | 6.5 |
| Aug | 30° / 19° | 30 | 5.8 | 0 | 13.7 | 6.2 |
| Sep | 25° / 16° | 93 | 10.3 | 0 | 12.3 | 7.0 |
| Oct | 21° / 12° | 125 | 11.3 | 0 | 10.9 | 6.4 |
| Nov | 16° / 8° | 148 | 12.8 | 0 | 9.6 | 4.6 |
| Dec | 12° / 5° | 113 | 10.8 | 0.1 | 9 | 3.2 |
Cloud cover in Winter
The sky is clear or mostly clear about 41% of the time across winter.
Chance of precipitation in Winter
Genzano di Roma gets around 274 mm of rain and snow over 30 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 8 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 9 h 12 min in early December to 10 h 54 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 2.1 kWh/m².
Is winter a good time to visit Genzano di Roma?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Genzano di Roma.
What to pack for Genzano di Roma in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Genzano di Roma sees daytime highs around 12°C and nights near 4°C. Pack a warm layer. Worth having: rain gear. About 30 days see rain.
Sea temperature near Genzano di Roma in Winter
The nearest coast averages about 15°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 28 km away) is warmest in August at about 26°C and coldest in February near 14°C.
It's comfortable for a long swim from May 31 to Nov 1 — about 5.1 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 14 | 14 | 15 | 18 | 22 | 25 | 26 | 24 | 21 | 19 | 16 |
| Comfort | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Refreshing | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Bracing |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 15 | Cool |
| May | 18 | Cool |
| Jun | 22 | Refreshing |
| Jul | 25 | Warm |
| Aug | 26 | Warm |
| Sep | 24 | Refreshing |
| Oct | 21 | Refreshing |
| Nov | 19 | Cool |
| Dec | 16 | Cool |
UV index in Genzano di Roma in Winter
Clear-sky midday UV across winter averages around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Genzano di Roma peaks around July 15 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 3 | 5 | 4 | 7 | 9 | 10 | 8 | 6 | 4 | 2 | 1 |
| Level | Low | Moderate | Moderate | Moderate | High | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 4 | Moderate |
| May | 7 | High |
| Jun | 9 | Very high |
| Jul | 10 | Very high |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Air quality in Genzano di Roma in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Genzano di Roma is worst in April — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 15 | 15 | 17 | 17 | 15 | 14 | 12 | 13 | 11 | 12 | 12 | 13 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Moderate | Good | Moderate | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 15 | Moderate |
| Mar | 17 | Moderate |
| Apr | 17 | Moderate |
| May | 15 | Moderate |
| Jun | 14 | Moderate |
| Jul | 12 | Good |
| Aug | 13 | Moderate |
| Sep | 11 | Good |
| Oct | 12 | Moderate |
| Nov | 12 | Good |
| Dec | 13 | Moderate |
Where is Genzano di Roma?
Genzano di Roma sits at 41.7°N, 12.7°E, 435 m above sea level, in Italy. The nearest listed city is Ariccia, 2.0 km away.
Topography around Genzano di Roma
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Genzano di Roma.
Within 3 km, the terrain around Genzano di Roma has significant variations in elevation — a maximum elevation change of 459 m around an average of 395 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 940 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,441 m.
The land around Genzano di Roma is covered by trees (67%) within 3 km, trees (50%) within 16 km, and trees (43%) and water (30%) within 80 km.
Italy travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F / L
- 230 V · 50 Hz
- Prices
- ≈ 69% of US
- price level, 2025
- GDP per capita
- $43,309
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 0.6
- per 100k, 2023
- Road deaths
- 5.3
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 513
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Genzano di Roma (41.7071°, 12.689°, elevation 435 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.