Rieti weather in December

In December, Rieti sees average daytime highs of 9°C and overnight lows near 2°C, with 107 mm of precipitation across 10.7 wet days and about 9 hours of daylight. It is the 11th-warmest and 2nd-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 37% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 06 min at the start of December to 8 h 54 min by month's end. Set against the rest of the year, December is Rieti's 10th-clearest and 3rd-windiest month. For the whole year in context, see Rieti's year-round climate.

Daytime high
11th warmest
Overnight low
3rd coldest
Precipitation
107 mm
10.7 wet days
Daylight
8 h 54 min
7:37 AM – 4:32 PM
Cloud cover
55%
10th clearest
Wind
7 km/h
3rd windiest
Solar energy
1.54 kWh/m²
Travel score
1.6
out of 10
Air quality
Moderate
PM2.5 11.3 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 10°C in the first days to 8°C by the end.

A typical December day in Rieti 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 about 1°C warmer than January.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
1103
2103
3103
4103
5103
6103
793
893
992
1092
1192
1292
1392
1492
1592
1682
1782
1882
1982
2081
2181
2281
2381
2481
2581
2681
2781
2881
2981
3081
3181

How December really feels in Rieti

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 17 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
17
wind chill below the day's low

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

Rieti weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 719.539.31.3
Feb / 81103.410.31.8
Mar12° / 9210.9311.63.4
Apr16° / 98130.913.14.5
May20° / 10°8311.40.114.46.2
Jun25° / 14°538.80157.3
Jul28° / 17°305.7014.87.2
Aug28° / 17°336.1013.76.8
Sep23° / 13°829.4012.37.1
Oct18° / 10°10510.50.110.85.9
Nov13° / 12912.419.63.4
Dec / 10710.72.891.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24753
34852
44852
54852
64852
74852
84852
94951
104951
115050
125050
135050
145149
155149
165149
175149
185149
195149
205248
215347
225347
235347
245446
255446
265347
275446
285446
295446
305446
315446

Chance of precipitation in December

Any precipitationSnow

Rieti gets around 107 mm of rain and snow over 10.7 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 35% and peaks near 38% on the wettest days, and about 3 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1386
2387
3377
4377
5377
6377
7367
8367
9358
10358
11348
12348
13348
14339
15339
16339
17339
183310
193310
203310
213310
223411
233411
243411
253411
263411
273511
283511
293511
303510
313410

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 6 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
16calm
26calm
37calm
47calm
57calm
67calm
77calm
87calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
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 h 06 min at the start of December to 8 h 54 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 7:25 AM to 7:44 AM, and sunset from 4:32 PM to 4:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.17:254:32
29.17:264:32
39.17:274:32
49.17:284:31
59.07:294:31
69.07:294:31
79.07:304:31
89.07:314:31
99.07:324:31
109.07:334:31
119.07:344:31
128.97:354:31
138.97:354:31
148.97:364:32
158.97:374:32
168.97:374:32
178.97:384:32
188.97:394:33
198.97:394:33
208.97:404:33
218.97:404:34
228.97:414:34
238.97:414:35
248.97:424:35
258.97:424:36
268.97:424:36
278.97:434:37
288.97:434:38
298.97:434:38
308.97:444:39
318.97:444:40

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.54 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.54 kWh/m² to a high of 6.92 kWh/m² in July across the year — December's 1.54 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.6Dim
21.6Dim
31.6Dim
41.6Dim
51.6Dim
61.6Dim
71.6Dim
81.6Dim
91.6Dim
101.6Dim
111.6Dim
121.6Dim
131.5Dim
141.5Dim
151.5Dim
161.5Dim
171.5Dim
181.5Dim
191.5Dim
201.5Dim
211.5Dim
221.5Dim
231.5Dim
241.5Dim
251.5Dim
261.5Dim
271.6Dim
281.6Dim
291.6Dim
301.6Dim
311.6Dim
Planning a trip in December

Is December a good time to visit Rieti?

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 Rieti.

What to pack for Rieti in December

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

In December, Rieti 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 Rieti 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 Rieti 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateLowJul 15UV 10Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5High
Apr5Moderate
May7High
Jun9Very high
Jul10Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Rieti?

Rieti sits at 42.4°N, 12.9°E, 405 m above sea level, in Italy. The nearest listed city is Terni, 25 km away.

Topography around Rieti

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

Within 3 km, the terrain around Rieti has significant variations in elevation — a maximum elevation change of 452 m around an average of 433 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,908 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,847 m.

The land around Rieti is covered by trees (43%) and cropland (27%) within 3 km, trees (76%) within 16 km, and trees (63%) within 80 km.

3 km
452 m
16 km
1,908 m
80 km
2,847 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Terni 25 km · Spoleto 39 km · Monterotondo 44 km · Mentana 45 km · L'Aquila 45 km · Guidonia Montecelio 47 km · Guidonia 47 km · Tor Lupara 49 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 Rieti (42.4048°, 12.8574°, 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. 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).