Vulcan weather in December

In December, Vulcan sees average daytime highs of 1°C and overnight lows near -5°C, with 62 mm of precipitation across 11.4 wet days and about 8.6 hours of daylight. It is the 11th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 3°C in the first days to 0°C by the end. The sky is clear or mostly clear about 25% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 48 min at the start of December to 8 h 36 min by month's end. Set against the rest of the year, December is Vulcan's 7th-clearest and 5th-windiest month. For the whole year in context, see Vulcan's year-round climate.

Daytime high
11th warmest
Overnight low
-5°
3rd coldest
Precipitation
62 mm
11.4 wet days
Daylight
8 h 30 min
8:07 AM – 4:39 PM
Cloud cover
65%
7th clearest
Wind
6 km/h
5th windiest
Solar energy
1.22 kWh/m²
Travel score
0.0
out of 10

Vulcan is locality in Hunedoara County, Romania.

Air quality
Good
PM10 22.3 µg/m³ · 2018
Founded
1462

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 3°C in the first days to 0°C by the end.

A typical December day in Vulcan reaches about 1°C in the afternoon and slips back to -5°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between -4°C and 7°C. Set against its neighbours, December runs about 5°C cooler than November and about 1°C warmer than January.

-15°-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
13-3
23-3
33-3
43-3
53-3
62-3
72-4
82-4
92-4
102-4
112-4
122-4
131-4
141-5
151-5
161-5
171-5
181-5
191-5
201-5
211-5
221-5
231-5
241-5
251-6
261-6
271-6
281-6
290-6
300-6
310-6

How December really feels in Vulcan

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.

Vulcan weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -6°531110.58.90.0
Feb / -5°5210.89.310.10.0
Mar / -2°72137.711.60.7
Apr12° / 10315.92.813.22.7
May17° / 13719.20.214.74.2
Jun20° / 10°15017.7015.45.2
Jul22° / 11°13917.1015.15.8
Aug22° / 11°10814.3013.96.3
Sep18° / 9211.90.112.35.5
Oct13° / 689.8110.73.5
Nov / -0°5710.35.39.30.9
Dec / -5°6211.49.18.60.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% 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 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23565
33664
43664
53664
63664
73664
83763
93763
103763
113763
123862
133862
143862
153961
163862
173862
183961
193961
203961
213961
223961
233961
243961
253961
263961
273961
283862
293763
303862
313862

Chance of precipitation in December

Any precipitationSnow

Vulcan gets around 62 mm of rain and snow over 11.4 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 37% and peaks near 38% on the wettest days, and about 9 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13724
23724
33724
43725
53725
63726
73726
83727
93728
103728
113629
123629
133630
143630
153631
163731
173731
183732
193732
203732
213732
223732
233732
243732
253732
263833
273833
283833
293834
303834
313834

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 6 km/h in December.

Across December, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
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 8 h 48 min at the start of December to 8 h 36 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 7:53 AM to 8:13 AM, and sunset from 4:40 PM to 4:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.87:534:40
28.87:544:40
38.77:554:40
48.77:564:39
58.77:574:39
68.77:584:39
78.77:594:39
88.68:004:39
98.68:014:39
108.68:024:39
118.68:034:39
128.68:044:39
138.68:044:39
148.68:054:39
158.68:064:39
168.58:074:39
178.58:074:40
188.58:084:40
198.58:094:40
208.58:094:41
218.58:104:41
228.58:104:42
238.58:114:42
248.58:114:43
258.58:114:43
268.58:124:44
278.58:124:44
288.58:124:45
298.68:134:46
308.68:134:47
318.68:134:47

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.22 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.22 kWh/m² to a high of 5.86 kWh/m² in June across the year — December's 1.22 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.3Dim
21.3Dim
31.3Dim
41.3Dim
51.3Dim
61.3Dim
71.3Dim
81.2Dim
91.2Dim
101.2Dim
111.2Dim
121.2Dim
131.2Dim
141.2Dim
151.2Dim
161.2Dim
171.2Dim
181.2Dim
191.2Dim
201.2Dim
211.2Dim
221.2Dim
231.2Dim
241.2Dim
251.2Dim
261.2Dim
271.2Dim
281.2Dim
291.2Dim
301.3Dim
311.3Dim
Planning a trip in December

Is December a good time to visit Vulcan?

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

0.0
Sightseeing
10th-best month of the year
0.0
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Vulcan.

What to pack for Vulcan in December

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

In December, Vulcan sees daytime highs around 1°C and nights near -5°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 11 days see rain.

a warm layera heavy coatrain gear

UV index in Vulcan 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 Vulcan peaks around July 14 at about 8 (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 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr8Very high
May6High
Jun8Very high
Jul8Very high
Aug8Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Vulcan?

Vulcan sits at 45.4°N, 23.3°E, 757 m above sea level, in Romania. The nearest listed city is Lupeni, 3.0 km away.

HunedoaraOrăştieCugirDeva

Topography around Vulcan

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

Within 3 km, the terrain around Vulcan has large variations in elevation — a maximum elevation change of 840 m around an average of 780 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,462 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,416 m.

The land around Vulcan is covered by trees (72%) and grassland (20%) within 3 km, trees (78%) within 16 km, and trees (70%) and grassland (21%) within 80 km.

3 km
840 m
16 km
1,462 m
80 km
2,416 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Lupeni 3.0 km · Petroşani 9.0 km · Petrila 14 km · Târgu Jiu 37 km · Hunedoara 50 km · Orăştie 50 km · Cugir 51 km · Deva 62 km

Romania travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 44% of US
price level, 2025
GDP per capita
$22,538
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
82%
of population, 2024
Homicide rate
1.1
per 100k, 2023
Road deaths
10.3
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 605
Religion
Romanian Orthodox 85%other 5%Roman Catholic 5%Reformed 3%

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 Vulcan (45.3833°, 23.2667°, elevation 757 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).