Sulmona weather in December

In December, Sulmona sees average daytime highs of 6°C and overnight lows near -2°C, with 98 mm of precipitation across 12.1 wet days and about 9 hours of daylight. It is the 10th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 7°C in the first days to 5°C by the end. The sky is clear or mostly clear about 30% 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 Sulmona's 10th-clearest and 3rd-windiest month. For the whole year in context, see Sulmona's year-round climate.

Daytime high
10th warmest
Overnight low
-2°
3rd coldest
Precipitation
98 mm
12.1 wet days
Daylight
8 h 54 min
7:32 AM – 4:29 PM
Cloud cover
60%
10th clearest
Wind
5 km/h
3rd windiest
Solar energy
1.66 kWh/m²
Travel score
0.3
out of 10

Sulmona 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 7°C in the first days to 5°C by the end.

A typical December day in Sulmona reaches about 6°C in the afternoon and slips back to -2°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 1°C and 10°C. Set against its neighbours, December runs about 4°C cooler than November and about 1°C warmer than January.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
170
270
370
470
57-1
67-1
77-1
86-1
96-1
106-1
116-1
126-2
136-2
146-2
156-2
166-2
175-2
185-2
195-2
205-2
215-2
225-3
235-3
245-3
255-3
265-3
275-3
285-3
295-3
305-3
315-3

How December really feels in Sulmona

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 31 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
31
wind chill below the day's low

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

Sulmona weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°8410.97.69.30.0
Feb / -3°7710.97.410.30.2
Mar / -0°9913.76.611.71.6
Apr12° / 10514.72.513.13.0
May17° / 10914.50.114.34.9
Jun21° / 11°7810.90156.7
Jul24° / 13°688.8014.77.7
Aug24° / 13°619.2013.77.5
Sep20° / 10°9011.3012.36.2
Oct16° / 8610.70.410.94.8
Nov10° / 10911.92.69.62.3
Dec / -2°9812.16.690.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% 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 56%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24159
34258
44258
54258
64258
74258
84258
94357
104357
114357
124357
134456
144555
154456
164555
174555
184555
194555
204555
214555
224555
234456
244456
254456
264456
274456
284456
294456
304456
314456

Chance of precipitation in December

Any precipitationSnow

Sulmona gets around 98 mm of rain and snow 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 precipitation averages around 39% and peaks near 40% on the wettest days, and about 7 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
14014
24015
34015
44016
54016
64017
74018
84019
94019
104020
113921
123921
133922
143922
153822
163822
173822
183823
193823
203823
213823
223923
233924
243924
253924
263924
273924
284024
294024
304024
313924

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 5 km/h in December.

Across December, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 7:19 AM to 7:38 AM, and sunset from 4:29 PM to 4:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.27:194:29
29.17:204:29
39.17:214:28
49.17:224:28
59.17:234:28
69.17:244:28
79.17:254:28
89.07:264:28
99.07:274:28
109.07:284:28
119.07:284:28
129.07:294:28
139.07:304:28
149.07:314:28
159.07:314:29
168.97:324:29
178.97:334:29
188.97:334:30
198.97:344:30
208.97:344:30
218.97:354:31
228.97:354:31
238.97:364:32
248.97:364:32
258.97:374:33
268.97:374:33
278.97:374:34
288.97:384:35
299.07:384:35
309.07:384:36
319.07:384:37

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.66 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.66 kWh/m² to a high of 6.77 kWh/m² in July across the year — December's 1.66 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.7Dim
21.7Dim
31.7Dim
41.7Dim
51.7Dim
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

Is December a good time to visit Sulmona?

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

0.3
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 Sulmona.

What to pack for Sulmona in December

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

In December, Sulmona sees daytime highs around 6°C and nights near -2°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 12 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Sulmona in December

The nearest coast averages about 15°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 52 km away) is warmest in August at about 26°C and coldest in February near 13°C.

It's comfortable for a long swim from May 31 to Oct 15 — about 4.5 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr14Bracing
May18Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep23Refreshing
Oct20Cool
Nov17Cool
Dec15Cool

UV index in Sulmona 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 Sulmona peaks around July 16 at about 10 (extreme) — 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 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highVery highHighModerateLowJul 16UV 10Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5High
Apr5High
May7Very high
Jun9Very high
Jul10Extreme
Aug9Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Sulmona 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 Sulmona is worst in April — around 19 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1219 µg/m³Sep 1813 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar18Moderate
Apr19Moderate
May16Moderate
Jun15Moderate
Jul14Moderate
Aug14Moderate
Sep12Moderate
Oct14Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Sulmona?

Sulmona sits at 42.0°N, 13.9°E, 405 m above sea level, in Italy. The nearest listed city is Chieti, 39 km away.

Topography around Sulmona

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

Within 3 km, the terrain around Sulmona has significant variations in elevation — a maximum elevation change of 272 m around an average of 416 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,541 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,846 m.

The land around Sulmona is covered by cropland (30%) and trees (29%) within 3 km, trees (56%) and grassland (31%) within 16 km, and trees (52%) and grassland (21%) within 80 km.

3 km
272 m
16 km
2,541 m
80 km
2,846 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Chieti 39 km · Avezzano 41 km · Lanciano 43 km · Sora 45 km · Francavilla al Mare 51 km · Pescara 51 km · Montesilvano 54 km · L'Aquila 55 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 Sulmona (42.0495°, 13.9258°, elevation 405 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. 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).