Zolder weather in December

In December, Zolder sees average daytime highs of 6°C and overnight lows near 2°C, with 77 mm of precipitation across 13.6 wet days and about 7.8 hours of daylight. It is the 11th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 6°C through the month. The sky is clear or mostly clear about 13% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 hours at the start of December to 7 h 42 min by month's end. Set against the rest of the year, December is Zolder's 12th-clearest and 2nd-windiest month. For the whole year in context, see Zolder's year-round climate.

Daytime high
11th warmest
Overnight low
3rd coldest
Precipitation
77 mm
13.6 wet days
Daylight
7 h 42 min
8:44 AM – 4:26 PM
Cloud cover
77%
12th clearest
Wind
15 km/h
2nd windiest
Solar energy
0.62 kWh/m²
Travel score
0.6
out of 10

Zolder is section of Heusden-Zolder, Belgium.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 6°C through the month.

A typical December day in Zolder reaches about 6°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 1°C and 12°C. Set against its neighbours, December runs about 3°C cooler than November and on par with January.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
173
273
373
473
573
673
773
873
973
1073
1172
1262
1362
1462
1562
1662
1762
1862
1962
2062
2162
2262
2362
2462
2562
2662
2762
2862
2962
3062
3162

How December really feels in Zolder

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.

Zolder weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 6612.11.28.20.3
Feb / 6011.31.89.60.7
Mar11° / 6012.50.911.52.3
Apr15° / 4810.9013.54.2
May18° / 6012.1015.35.5
Jun21° / 12°6912.4016.25.9
Jul23° / 14°7512.7015.86.4
Aug23° / 14°7512.2014.36.4
Sep19° / 11°5810.5012.45.9
Oct15° / 6111.3010.44.1
Nov10° / 6412.10.38.71.9
Dec / 7713.61.77.80.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of December, with mostly cloudy or overcast conditions the remaining 76%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22377
32377
42377
52377
62377
72575
82575
92575
102575
112674
122773
132773
142674
152674
162674
172674
182575
192575
202575
212575
222476
232476
242476
252476
262476
272377
282476
292476
302476
312575

Chance of precipitation in December

Any precipitationSnow

Zolder gets around 77 mm of rain and snow over 13.6 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 43% and peaks near 45% on the wettest days, and about 2 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1414
2424
3424
4424
5424
6425
7425
8425
9425
10425
11415
12415
13415
14415
15415
16425
17425
18425
19426
20436
21436
22446
23446
24446
25446
26456
27456
28456
29456
30455
31445

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 15 km/h in December.

Across December, daily wind ranges from about 14 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 hours at the start of December to 7 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over December. Sunrise moves from 8:28 AM to 8:50 AM, and sunset from 4:29 PM to 4:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.08:284:29
28.08:294:29
38.08:304:28
47.98:324:28
57.98:334:27
67.98:344:27
77.98:354:27
87.88:364:26
97.88:374:26
107.88:384:26
117.88:394:26
127.88:404:26
137.78:414:26
147.78:424:26
157.78:434:26
167.78:444:26
177.78:444:26
187.78:454:27
197.78:464:27
207.78:464:27
217.78:474:28
227.78:474:28
237.78:484:29
247.78:484:29
257.78:494:30
267.78:494:30
277.78:494:31
287.78:494:32
297.78:494:33
307.78:504:33
317.78:504:34

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.62 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.62 kWh/m² to a high of 5.25 kWh/m² in June across the year — December's 0.62 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.7Dim
20.7Dim
30.7Dim
40.7Dim
50.7Dim
60.7Dim
70.7Dim
80.7Dim
90.7Dim
100.7Dim
110.7Dim
120.6Dim
130.6Dim
140.6Dim
150.6Dim
160.6Dim
170.6Dim
180.6Dim
190.6Dim
200.6Dim
210.6Dim
220.6Dim
230.6Dim
240.6Dim
250.6Dim
260.6Dim
270.6Dim
280.6Dim
290.6Dim
300.6Dim
310.6Dim
Planning a trip in December

Is December a good time to visit Zolder?

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

0.6
Sightseeing
11th-best month of the year
0.0
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Zolder.

What to pack for Zolder in December

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

In December, Zolder sees daytime highs around 6°C and nights near 2°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 14 days see rain.

a warm layera heavy coatrain gear

UV index in Zolder 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 Zolder peaks around July 13 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. 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 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 13UV 6Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Zolder 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 Zolder is worst in April — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1216 µg/m³Dec 1311 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb12Moderate
Mar16Moderate
Apr16Moderate
May15Moderate
Jun14Moderate
Jul13Moderate
Aug14Moderate
Sep13Moderate
Oct12Good
Nov11Good
Dec11Good
Location & terrain

Where is Zolder?

Zolder sits at 51.0°N, 5.3°E, 39 m above sea level, in Belgium. The nearest listed city is Heusden, 2.0 km away.

Topography around Zolder

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

Within 3 km, the terrain around Zolder has only modest variations in elevation — a maximum elevation change of 55 m around an average of 42 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 149 m; within 80 km, large variations in elevation — a maximum elevation change of 746 m.

The land around Zolder is covered by trees (58%) and artificial surfaces (25%) within 3 km, trees (42%) and grassland (29%) within 16 km, and trees (35%), cropland (28%) and grassland (25%) within 80 km.

3 km
55 m
16 km
149 m
80 km
746 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Heusden 2.0 km · Houthalen 5.0 km · Koersel 5.0 km · Zonhoven 6.0 km · Helchteren 6.0 km · Beringen 6.0 km · Hasselt 11 km · Genk 15 km

Belgium travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 81% of US
price level, 2025
GDP per capita
$60,750
2025
Happiness
6.9 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.1
per 100k, 2021
Road deaths
5.8
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 608
Religion
Roman Catholic 57%nonbeliever/agnostic 20%atheist 9%Muslim 7%

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 Zolder (51.0245°, 5.3098°, elevation 39 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).