San Giovanni Valdarno weather in December

In December, San Giovanni Valdarno sees average daytime highs of 9°C and overnight lows near 2°C, with 91 mm of precipitation across 11.1 wet days and about 8.8 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 10°C in the first days to 8°C by the end. The sky is clear or mostly clear about 32% 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 San Giovanni Valdarno's 10th-clearest and 5th-windiest month. For the whole year in context, see San Giovanni Valdarno's year-round climate.

Daytime high
11th warmest
Overnight low
3rd coldest
Precipitation
91 mm
11.1 wet days
Daylight
8 h 48 min
7:47 AM – 4:33 PM
Cloud cover
60%
10th clearest
Wind
7 km/h
5th windiest
Solar energy
1.36 kWh/m²
Travel score
1.6
out of 10

San Giovanni Valdarno is chief town of the homonym municipality.

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 10°C in the first days to 8°C by the end.

A typical December day in San Giovanni Valdarno reaches about 9°C in the afternoon and slips back to 2°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 5°C and 12°C. Set against its neighbours, December runs about 4°C cooler than November and on par with January.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
1103
2103
3103
4103
5103
693
793
893
992
1092
1192
1292
1392
1492
1592
1682
1782
1882
1982
2082
2182
2282
2381
2481
2581
2681
2781
2881
2981
3081
3181

How December really feels in San Giovanni Valdarno

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 18 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
18
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

San Giovanni Valdarno weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 628.71.89.11.3
Feb / 728.81.710.22.0
Mar13° / 749.51.111.63.7
Apr16° / 8712.30.113.24.9
May21° / 11°7611.1014.56.4
Jun25° / 15°538.2015.27.3
Jul28° / 17°355.7014.97.1
Aug28° / 17°406.9013.86.8
Sep24° / 13°919.5012.37.0
Oct18° / 10°10911.4010.85.8
Nov13° / 12212.10.69.53.2
Dec / 9111.11.48.81.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
34159
44159
54258
64357
74357
84357
94357
104357
114555
124555
134555
144654
154654
164654
174555
184555
194555
204456
214555
224555
234555
244555
254456
264456
274456
284357
294357
304357
314258

Chance of precipitation in December

Any precipitationSnow

San Giovanni Valdarno gets around 91 mm of rain and snow over 11.1 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 36% and peaks near 39% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1393
2393
3393
4383
5383
6383
7373
8373
9363
10364
11354
12354
13344
14344
15345
16345
17345
18345
19345
20345
21345
22356
23356
24356
25355
26355
27355
28355
29355
30345
31345

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 (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 7:34 AM to 7:53 AM, and sunset from 4:34 PM to 4:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.07:344:34
29.07:354:33
39.07:364:33
48.97:374:33
58.97:384:33
68.97:394:33
78.97:404:32
88.97:414:32
98.87:414:32
108.87:424:32
118.87:434:32
128.87:444:33
138.87:454:33
148.87:454:33
158.87:464:33
168.87:474:33
178.87:484:34
188.87:484:34
198.87:494:34
208.87:494:35
218.87:504:35
228.87:504:35
238.87:514:36
248.87:514:36
258.87:524:37
268.87:524:38
278.87:524:38
288.87:524:39
298.87:534:40
308.87:534:40
318.87:534:41

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.36 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.36 kWh/m² to a high of 6.86 kWh/m² in July across the year — December's 1.36 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.4Dim
21.4Dim
31.4Dim
41.4Dim
51.4Dim
61.4Dim
71.4Dim
81.4Dim
91.4Dim
101.4Dim
111.4Dim
121.4Dim
131.4Dim
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
311.4Dim
Planning a trip in December

Is December a good time to visit San Giovanni Valdarno?

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

1.6
Sightseeing
11th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in San Giovanni Valdarno.

What to pack for San Giovanni Valdarno in December

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

In December, San Giovanni Valdarno sees daytime highs around 9°C and nights near 2°C. Pack a warm layer. Worth having: rain gear. About 11 days see rain.

a warm layerrain gear

UV index in San Giovanni Valdarno 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 San Giovanni Valdarno peaks around July 14 at about 9 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 14UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr6High
May6High
Jun8Very high
Jul9Very high
Aug8Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in San Giovanni Valdarno in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in San Giovanni Valdarno is worst in March — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 2016 µg/m³Nov 1712 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar17Moderate
Apr16Moderate
May15Moderate
Jun14Moderate
Jul12Good
Aug13Moderate
Sep12Moderate
Oct13Moderate
Nov12Good
Dec12Moderate
Location & terrain

Where is San Giovanni Valdarno?

San Giovanni Valdarno sits at 43.6°N, 11.5°E, 134 m above sea level, in Italy. The nearest listed city is Montevarchi, 6.0 km away.

Topography around San Giovanni Valdarno

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

Within 3 km, the terrain around San Giovanni Valdarno has only modest variations in elevation — a maximum elevation change of 133 m around an average of 164 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,482 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,724 m.

The land around San Giovanni Valdarno is covered by trees (54%) and grassland (20%) within 3 km, trees (79%) within 16 km, and trees (72%) within 80 km.

3 km
133 m
16 km
1,482 m
80 km
1,724 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Montevarchi 6.0 km · Arezzo 31 km · Campo di Marte 31 km · Siena 32 km · Poggibonsi 33 km · Florence 33 km · Scandicci 34 km · Colle di Val d'Elsa 36 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 San Giovanni Valdarno (43.5676°, 11.5299°, elevation 134 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).