Semmering weather in December

In December, Semmering sees average daytime highs of 1°C and overnight lows near -4°C, with 56 mm of precipitation across 11.6 wet days and about 8.3 hours of daylight. It is the 11th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 2°C in the first days to 0°C by the end. The sky is clear or mostly clear about 19% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 30 min at the start of December to 8 h 18 min by month's end. Set against the rest of the year, December is Semmering's 9th-clearest and 6th-windiest month. For the whole year in context, see Semmering's year-round climate.

Daytime high
11th warmest
Overnight low
-4°
3rd coldest
Precipitation
56 mm
11.6 wet days
Daylight
8 h 12 min
7:46 AM – 4:00 PM
Cloud cover
70%
9th clearest
Wind
9 km/h
6th windiest
Solar energy
1.01 kWh/m²
Travel score
0.0
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 2°C in the first days to 0°C by the end.

A typical December day in Semmering reaches about 1°C in the afternoon and slips back to -4°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between -4°C and 6°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)
12-2
22-2
32-3
42-3
52-3
62-3
72-3
81-3
91-3
101-3
111-4
121-4
131-4
141-4
151-4
161-4
171-4
181-4
191-4
201-4
211-4
221-4
231-4
240-5
250-5
260-5
270-5
280-5
290-5
300-5
310-5

How December really feels in Semmering

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.

Semmering weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°5711.310.78.70.0
Feb / -4°5310.410.49.90.0
Mar / -1°7714.29.911.60.5
Apr11° / 8514.4513.32.5
May16° / 13318.90.514.93.9
Jun19° / 11°14218.5015.74.9
Jul21° / 12°14919.2015.45.2
Aug21° / 12°13816.7014.15.4
Sep16° / 11214.10.312.44.5
Oct11° / 78122.510.62.7
Nov / 6310.96.89.10.5
Dec / -4°5611.610.18.30.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% 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 69%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12971
23070
33070
43070
53070
63070
73070
82971
93070
103070
113169
123169
133169
143169
153169
163169
173169
183268
193268
203268
213268
223268
233268
243466
253466
263367
273367
283367
293268
303169
313169

Chance of precipitation in December

Any precipitationSnow

Semmering gets around 56 mm of rain and snow over 11.6 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 38% and peaks near 39% on the wettest days, and about 10 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13628
23628
33629
43730
53730
63831
73831
83832
93933
103933
113934
123934
133935
143935
153935
163835
173835
183835
193735
203735
213735
223734
233734
243734
253734
263734
273734
283734
293734
303734
313734

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 9 km/h in December.

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
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 30 min at the start of December to 8 h 18 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 7:31 AM to 7:52 AM, and sunset from 4:02 PM to 4:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.57:314:02
28.57:324:01
38.57:344:01
48.47:354:01
58.47:364:00
68.47:374:00
78.47:384:00
88.37:394:00
98.37:404:00
108.37:414:00
118.37:424:00
128.37:434:00
138.37:434:00
148.37:444:00
158.27:454:00
168.27:464:00
178.27:464:00
188.27:474:01
198.27:484:01
208.27:484:01
218.27:494:02
228.27:494:02
238.27:504:03
248.27:504:03
258.27:504:04
268.27:514:04
278.27:514:05
288.27:514:06
298.27:514:06
308.37:524:07
318.37:524:08

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.01 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.01 kWh/m² to a high of 5.52 kWh/m² in June across the year — December's 1.01 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.1Dim
21.1Dim
31.1Dim
41.1Dim
51.1Dim
61.0Dim
71.0Dim
81.0Dim
91.0Dim
101.0Dim
111.0Dim
121.0Dim
131.0Dim
141.0Dim
151.0Dim
161.0Dim
171.0Dim
181.0Dim
191.0Dim
201.0Dim
211.0Dim
221.0Dim
231.0Dim
241.0Dim
251.0Dim
261.0Dim
271.0Dim
281.0Dim
291.0Dim
301.0Dim
311.0Dim
Planning a trip in December

Is December a good time to visit Semmering?

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 Semmering.

What to pack for Semmering in December

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

In December, Semmering sees daytime highs around 1°C and nights near -4°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 12 days see rain.

a warm layera heavy coatrain gear

UV index in Semmering 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 Semmering peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 16UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr6High
May6High
Jun8Very high
Jul8Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Semmering 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 Semmering is worst in June — around 15 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 1415 µg/m³Nov 1110 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb11Good
Mar14Moderate
Apr15Moderate
May14Moderate
Jun15Moderate
Jul13Moderate
Aug13Moderate
Sep11Good
Oct10Good
Nov10Good
Dec12Good
Location & terrain

Where is Semmering?

Semmering sits at 47.6°N, 15.8°E, 0 m above sea level, in Austria. The nearest listed city is Wiener Neustadt, 36 km away.

Wiener NeustadtBadenEisenzickenEisenstadtSopronMödlingPerchtoldsdorfAndritz

Topography around Semmering

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

Within 3 km, the terrain around Semmering has large variations in elevation — a maximum elevation change of 904 m around an average of 1,024 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,667 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,142 m.

The land around Semmering is covered by trees (85%) within 3 km, trees (79%) within 16 km, and trees (61%) within 80 km.

3 km
904 m
16 km
1,667 m
80 km
2,142 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Wiener Neustadt 36 km · Baden 51 km · Eisenzicken 51 km · Eisenstadt 57 km · Sopron 57 km · Mödling 61 km · Perchtoldsdorf 63 km · Andritz 65 km

Austria travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 82% of US
price level, 2025
GDP per capita
$62,930
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.9
per 100k, 2023
Road deaths
4.9
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 616
Religion
Roman Catholic 55%none 22%Muslim 8%other 5%

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 Semmering (47.6335°, 15.8299°, elevation 0 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).