Bystrc weather in December

In December, Bystrc sees average daytime highs of 2°C and overnight lows near -2°C, with 36 mm of precipitation across 9 wet days and about 8.1 hours of daylight. It is the 11th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 3°C in the first days to 1°C by the end. The sky is clear or mostly clear about 12% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 18 min at the start of December to 8 hours by month's end. Set against the rest of the year, December is Bystrc's 11th-clearest and 5th-windiest month. For the whole year in context, see Bystrc's year-round climate.

Daytime high
11th warmest
Overnight low
-2°
3rd coldest
Precipitation
36 mm
9 wet days
Daylight
8 hours
7:50 AM – 3:50 PM
Cloud cover
78%
11th clearest
Wind
12 km/h
5th windiest
Solar energy
0.76 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 3°C in the first days to 1°C by the end.

A typical December day in Bystrc reaches about 2°C in the afternoon and slips back to -2°C overnight — a 4°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 on par with January.

-15°-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
13-1
23-1
33-1
43-1
53-1
62-1
72-1
82-2
92-2
102-2
112-2
122-2
132-2
142-2
152-2
162-2
172-2
181-3
191-3
201-3
211-3
221-3
231-3
241-3
251-3
261-3
271-3
281-3
291-3
301-3
311-3

How December really feels in Bystrc

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.

Bystrc weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°348.85.68.50.0
Feb / -3°277.24.29.80.0
Mar / 408.82.511.61.3
Apr14° / 409.20.713.44.0
May18° / 6512.4015.15.6
Jun22° / 13°7512.4015.96.2
Jul24° / 14°8413015.66.6
Aug24° / 14°6910.4014.26.8
Sep19° / 10°649.5012.45.9
Oct12° / 448.90.310.53.4
Nov / 4192.38.90.7
Dec / -2°3694.88.10.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 78%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11981
22080
32080
42080
52080
62080
72080
82080
92080
102080
112080
121981
131981
141981
151981
161981
171981
182080
192080
202278
212278
222278
232377
242476
252476
262476
272674
282773
292773
302872
312773

Chance of precipitation in December

Any precipitationSnow

Bystrc gets around 36 mm of rain and snow over 9 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 30% and peaks near 32% on the wettest days, and about 5 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
12813
22813
32914
42914
53014
63014
73014
83014
93015
103015
113015
123015
133015
143015
153015
162915
172915
182915
192916
202916
212816
222916
232917
242917
252917
263017
273018
283118
293118
303219
313219

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 12 km/h in December.

Across December, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 18 min at the start of December to 8 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over December. Sunrise moves from 7:35 AM to 7:56 AM, and sunset from 3:52 PM to 3:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.37:353:52
28.37:363:52
38.27:373:51
48.27:393:51
58.27:403:51
68.27:413:50
78.17:423:50
88.17:433:50
98.17:443:50
108.17:453:50
118.17:463:50
128.07:473:50
138.07:483:50
148.07:483:50
158.07:493:50
168.07:503:50
178.07:513:50
188.07:513:51
198.07:523:51
208.07:533:51
218.07:533:52
228.07:543:52
238.07:543:53
248.07:543:53
258.07:553:54
268.07:553:54
278.07:553:55
288.07:563:56
298.07:563:56
308.07:563:57
318.07:563:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.76 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.76 kWh/m² to a high of 5.56 kWh/m² in June across the year — December's 0.76 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.8Dim
20.8Dim
30.8Dim
40.8Dim
50.8Dim
60.8Dim
70.8Dim
80.8Dim
90.8Dim
100.8Dim
110.8Dim
120.8Dim
130.8Dim
140.8Dim
150.8Dim
160.8Dim
170.8Dim
180.8Dim
190.8Dim
200.8Dim
210.8Dim
220.8Dim
230.8Dim
240.8Dim
250.8Dim
260.8Dim
270.8Dim
280.8Dim
290.8Dim
300.8Dim
310.8Dim
Planning a trip in December

Is December a good time to visit Bystrc?

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 Bystrc.

What to pack for Bystrc in December

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

In December, Bystrc sees daytime highs around 2°C and nights near -2°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 9 days see rain.

a warm layera heavy coatrain gear

UV index in Bystrc 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 Bystrc peaks around June 22 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 22UV 7Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May6High
Jun7Very high
Jul7Very high
Aug7High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Bystrc 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 Bystrc is worst in June — around 17 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJun 1617 µg/m³Dec 1110 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb13Moderate
Mar16Moderate
Apr16Moderate
May16Moderate
Jun17Moderate
Jul16Moderate
Aug15Moderate
Sep13Moderate
Oct11Good
Nov10Good
Dec10Good
Location & terrain

Where is Bystrc?

Bystrc sits at 49.2°N, 16.5°E, 215 m above sea level, in Czechia. The nearest listed city is Žabovřesky, 3.0 km away.

Vyškov

Topography around Bystrc

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

Within 3 km, the terrain around Bystrc has only modest variations in elevation — a maximum elevation change of 217 m around an average of 285 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 439 m; within 80 km, large variations in elevation — a maximum elevation change of 695 m.

The land around Bystrc is covered by trees (56%) within 3 km, trees (52%) and cropland (27%) within 16 km, and cropland (52%) and trees (32%) within 80 km.

3 km
217 m
16 km
439 m
80 km
695 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Žabovřesky 3.0 km · Královo Pole 4.0 km · Brno 7.0 km · Brno střed 7.0 km · Židenice 9.0 km · Líšeň 12 km · Blansko 17 km · Vyškov 34 km

Czechia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 59% of US
price level, 2025
GDP per capita
$35,917
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
5.9
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 582
Religion
none 48%believers unaffiliated with a religious society 9%Roman Catholic 7%other believers belonging to a church or religious society 6%

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 Bystrc (49.2264°, 16.5303°, elevation 215 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).