Civitavecchia weather in December

In December, Civitavecchia sees average daytime highs of 13°C and overnight lows near 11°C, with 101 mm of rain across 12.1 wet days and about 9 hours of daylight. It is the 9th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 14°C in the first days to 13°C by the end. The sky is clear or mostly clear about 41% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 12 min at the start of December to 9 hours by month's end. Set against the rest of the year, December is Civitavecchia's 10th-clearest and 1st-windiest month. For the whole year in context, see Civitavecchia's year-round climate.

Daytime high
13°
9th warmest
Overnight low
11°
4th coldest
Rainfall
101 mm
12.1 wet days
Daylight
8 h 54 min
7:41 AM – 4:37 PM
Cloud cover
50%
10th clearest
Wind
22 km/h
1st windiest
Solar energy
1.69 kWh/m²
Travel score
3.8
out of 10
Air quality
Good
PM2.5 8.7 µg/m³ · 2019

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 14°C in the first days to 13°C by the end.

A typical December day in Civitavecchia reaches about 13°C in the afternoon and slips back to 11°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 16°C. Set against its neighbours, December runs about 3°C cooler than November and about 1°C warmer than January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
11512
21412
31412
41412
51412
61412
71411
81411
91411
101411
111411
121411
131411
141311
151311
161311
171311
181311
191311
201310
211310
221310
231310
241310
251310
261310
271310
281310
291310
301310
311310

Civitavecchia weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 10°759.99.33.4
Feb12° / 719.110.33.4
Mar13° / 11°627.611.74.2
Apr15° / 13°567.913.15.1
May19° / 16°335.714.46.9
Jun22° / 20°213.2158.4
Jul25° / 23°121.414.89.2
Aug25° / 23°192.313.78.8
Sep23° / 21°777.312.37.6
Oct20° / 17°11710.310.86.5
Nov16° / 14°15312.79.64.9
Dec13° / 11°10112.193.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 42%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35842
45842
55842
65842
75842
85842
95842
105842
115842
125842
135842
145842
155842
165842
175743
185743
195743
205743
215743
225743
235743
245842
255842
265842
275743
285842
295842
305842
315842

Chance of precipitation in December

Any precipitation

Civitavecchia gets around 101 mm of rain over 12.1 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
143
243
342
442
542
641
741
840
940
1039
1139
1238
1338
1438
1538
1638
1737
1837
1938
2038
2138
2238
2338
2438
2538
2638
2737
2837
2937
3036
3136

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
18911
29010
3919
4928
5928
6937
7946
8955
9955
10964
11964
12973
13973
14973
15982
16982
17982
18982
19982
20982
21982
22982
23982
24982
25982
26982
27982
28982
29982
30982
31982

Wind in December

Winds average 22 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 21 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2022breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3021breezy
3121breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 12 min at the start of December to 9 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:28 AM to 7:47 AM, and sunset from 4:37 PM to 4:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.27:284:37
29.17:294:37
39.17:304:37
49.17:314:37
59.17:324:37
69.17:334:36
79.07:344:36
89.07:344:36
99.07:354:36
109.07:364:36
119.07:374:36
129.07:384:37
139.07:394:37
149.07:394:37
159.07:404:37
168.97:414:37
178.97:414:38
188.97:424:38
198.97:424:38
208.97:434:39
218.97:444:39
228.97:444:40
238.97:444:40
248.97:454:41
258.97:454:41
268.97:464:42
278.97:464:42
288.97:464:43
299.07:464:44
309.07:474:44
319.07:474:45

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.69 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.69 kWh/m² to a high of 7.21 kWh/m² in July across the year — December's 1.69 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.8Dim
21.8Dim
31.8Dim
41.8Dim
51.8Dim
61.7Dim
71.7Dim
81.7Dim
91.7Dim
101.7Dim
111.7Dim
121.7Dim
131.7Dim
141.7Dim
151.7Dim
161.7Dim
171.7Dim
181.7Dim
191.7Dim
201.7Dim
211.7Dim
221.7Dim
231.7Dim
241.7Dim
251.7Dim
261.7Dim
271.7Dim
281.7Dim
291.7Dim
301.7Dim
311.7Dim
Planning a trip in December

Hazard calendar for Civitavecchia

In seasonPeak

In December, Civitavecchia sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Civitavecchia's rainy season runs September–February, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Civitavecchia?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.8
Sightseeing
10th-best month of the year
0.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Civitavecchia.

What to pack for Civitavecchia in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Civitavecchia sees daytime highs around 13°C and nights near 11°C. Worth packing: a warm layer, rain gear and a windbreaker. About 12 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Civitavecchia in December

The nearest coast averages about 16°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 km away) is warmest in August at about 25°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 2 to Oct 29 — about 4.9 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul24Warm
Aug25Warm
Sep23Refreshing
Oct21Refreshing
Nov19Cool
Dec16Cool

UV index in Civitavecchia in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Civitavecchia peaks around July 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highHighModerateLowJul 14UV 9Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr4Moderate
May7High
Jun8Very high
Jul9Very high
Aug8Very high
Sep5High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Civitavecchia?

Civitavecchia sits at 42.1°N, 11.8°E, 10 m above sea level, in Italy. The nearest listed city is Cerveteri, 27 km away.

Topography around Civitavecchia

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Civitavecchia.

Within 3 km, the terrain around Civitavecchia has only modest variations in elevation — a maximum elevation change of 178 m around an average of 37 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 636 m; within 80 km, large variations in elevation — a maximum elevation change of 1,119 m.

The land around Civitavecchia is covered by water (38%) and artificial surfaces (25%) within 3 km, water (54%) within 16 km, and water (37%) and trees (32%) within 80 km.

3 km
178 m
16 km
636 m
80 km
1,119 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Cerveteri 27 km · Ladispoli 28 km · Viterbo 44 km · Fiumicino 51 km · Lido di Ostia 56 km · Acilia-Castel Fusano-Ostia Antica 57 km · Vatican City 58 km · Casal Palocco 60 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
Christian 81%unaffiliated 13%Muslim 5%other 1%

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 Civitavecchia (42.0932°, 11.7967°, elevation 10 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).