Rosignano Solvay-Castiglioncello weather in December

In December, Rosignano Solvay-Castiglioncello sees average daytime highs of 11°C and overnight lows near 6°C, with 86 mm of precipitation across 10.5 wet days and about 8.8 hours of daylight. It is the 10th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 12°C in the first days to 11°C by the end. The sky is clear or mostly clear about 38% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 hours at the start of December to 8 h 48 min by month's end. Set against the rest of the year, December is Rosignano Solvay-Castiglioncello's 10th-clearest and 1st-windiest month. For the whole year in context, see Rosignano Solvay-Castiglioncello's year-round climate.

Daytime high
11°
10th warmest
Overnight low
3rd coldest
Precipitation
86 mm
10.5 wet days
Daylight
8 h 48 min
7:51 AM – 4:38 PM
Cloud cover
55%
10th clearest
Wind
10 km/h
1st windiest
Solar energy
1.44 kWh/m²
Travel score
2.8
out of 10

Rosignano Solvay-Castiglioncello is borough of Rosignano Marittimo, Tuscany, Italy.

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 12°C in the first days to 11°C by the end.

A typical December day in Rosignano Solvay-Castiglioncello reaches about 11°C in the afternoon and slips back to 6°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 14°C. Set against its neighbours, December runs about 4°C cooler than November and about 1°C warmer than January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1127
2127
3127
4127
5127
6127
7127
8127
9126
10126
11116
12116
13116
14116
15116
16116
17116
18116
19116
20116
21116
22116
23116
24116
25116
26115
27115
28115
29115
30115
31115

Rosignano Solvay-Castiglioncello weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 638.80.39.22.5
Feb11° / 658.60.610.22.8
Mar14° / 638.60.211.64.2
Apr17° / 10°7610.3013.25.3
May21° / 14°638.4014.56.8
Jun25° / 18°466.3015.27.8
Jul28° / 21°243.2014.97.9
Aug28° / 21°374.9013.87.4
Sep24° / 17°988.9012.37.3
Oct20° / 14°12411.4010.86.2
Nov15° / 10°12613.109.54.2
Dec11° / 8610.50.38.82.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24951
35050
45050
55149
65248
75248
85248
95248
105248
115248
125248
135149
145248
155248
165149
175149
185149
195050
205050
215050
224951
234951
245050
255050
265149
275149
285149
295050
305050
315050

Chance of precipitation in December

Any precipitation

Rosignano Solvay-Castiglioncello gets around 86 mm of rain and snow over 10.5 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 34% and peaks near 40% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
239
339
438
537
637
736
835
935
1034
1133
1233
1333
1432
1532
1632
1732
1832
1932
2032
2132
2233
2333
2433
2533
2633
2733
2833
2933
3032
3132

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1982
2991
3991
4991
5991
6991
7991
8991
9991
10991
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in December

Winds average 10 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 hours at the start of December to 8 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:37 AM to 7:57 AM, and sunset from 4:39 PM to 4:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.07:374:39
29.07:394:38
39.07:404:38
49.07:414:38
58.97:424:38
68.97:424:38
78.97:434:37
88.97:444:37
98.97:454:37
108.97:464:37
118.87:474:37
128.87:484:38
138.87:484:38
148.87:494:38
158.87:504:38
168.87:514:38
178.87:514:39
188.87:524:39
198.87:524:39
208.87:534:40
218.87:544:40
228.87:544:40
238.87:544:41
248.87:554:41
258.87:554:42
268.87:564:43
278.87:564:43
288.87:564:44
298.87:564:45
308.87:574:45
318.87:574:46

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.44 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.44 kWh/m² to a high of 7 kWh/m² in July across the year — December's 1.44 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.6Dim
21.5Dim
31.5Dim
41.5Dim
51.5Dim
61.5Dim
71.5Dim
81.5Dim
91.5Dim
101.5Dim
111.5Dim
121.5Dim
131.5Dim
141.4Dim
151.4Dim
161.4Dim
171.4Dim
181.4Dim
191.4Dim
201.4Dim
211.4Dim
221.4Dim
231.4Dim
241.4Dim
251.4Dim
261.4Dim
271.4Dim
281.4Dim
291.4Dim
301.4Dim
311.5Dim
Planning a trip in December

Is December a good time to visit Rosignano Solvay-Castiglioncello?

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

2.8
Sightseeing
10th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Rosignano Solvay-Castiglioncello.

What to pack for Rosignano Solvay-Castiglioncello in December

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

In December, Rosignano Solvay-Castiglioncello sees daytime highs around 11°C and nights near 6°C. Pack a warm layer. Worth having: rain gear. About 11 days see rain.

a warm layerrain gear

Sea temperature near Rosignano Solvay-Castiglioncello 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 offshore is warmest in August at about 25°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 3 to Oct 22 — about 4.7 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul24Warm
Aug25Warm
Sep23Refreshing
Oct21Refreshing
Nov18Cool
Dec16Cool

UV index in Rosignano Solvay-Castiglioncello 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 Rosignano Solvay-Castiglioncello peaks around July 12 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 12UV 9Dec 23UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr6High
May6High
Jun8Very high
Jul9Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Rosignano Solvay-Castiglioncello?

Rosignano Solvay-Castiglioncello sits at 43.4°N, 10.4°E, 13 m above sea level, in Italy. The nearest listed city is Cecina, 11 km away.

Topography around Rosignano Solvay-Castiglioncello

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rosignano Solvay-Castiglioncello.

Within 3 km, the terrain around Rosignano Solvay-Castiglioncello has only modest variations in elevation — a maximum elevation change of 178 m around an average of 25 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 672 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,823 m.

The land around Rosignano Solvay-Castiglioncello is covered by water (37%) and trees (21%) within 3 km, water (45%) and trees (27%) within 16 km, and water (46%) and trees (35%) within 80 km.

3 km
178 m
16 km
672 m
80 km
1,823 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Cecina 11 km · Livorno 19 km · Cascina 33 km · Pontedera 34 km · Pisa 36 km · San Miniato 46 km · San Miniato Basso 47 km · Lucca 51 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 Rosignano Solvay-Castiglioncello (43.3895°, 10.4361°, elevation 13 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).