Sint-Gillis-Waas weather in December

In December, Sint-Gillis-Waas sees average daytime highs of 7°C and overnight lows near 3°C, with 71 mm of precipitation across 13.2 wet days and about 7.7 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 7°C through the month. 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 hours at the start of December to 7 h 42 min by month's end. Set against the rest of the year, December is Sint-Gillis-Waas's 11th-clearest and 2nd-windiest month. For the whole year in context, see Sint-Gillis-Waas's year-round climate.

Daytime high
11th warmest
Overnight low
3rd coldest
Precipitation
71 mm
13.2 wet days
Daylight
7 h 42 min
8:49 AM – 4:30 PM
Cloud cover
76%
11th clearest
Wind
16 km/h
2nd windiest
Solar energy
0.62 kWh/m²
Travel score
0.7
out of 10

Sint-Gillis-Waas is town in Sint-Gillis-Waas municipality, 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 7°C through the month.

A typical December day in Sint-Gillis-Waas reaches about 7°C in the afternoon and slips back to 3°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 11°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)
184
284
374
473
573
673
773
873
973
1073
1173
1273
1373
1473
1573
1673
1773
1873
1973
2073
2163
2263
2363
2463
2563
2663
2762
2862
2962
3062
3162

How December really feels in Sint-Gillis-Waas

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.

Sint-Gillis-Waas weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 6111.70.98.20.5
Feb / 53111.29.60.8
Mar10° / 5211.20.611.52.3
Apr14° / 4811.2013.53.9
May18° / 10°6111.8015.35.3
Jun20° / 13°6411.3016.35.9
Jul22° / 15°7412.4015.96.3
Aug22° / 14°7312014.46.3
Sep19° / 12°5710.6012.45.8
Oct15° / 5911.5010.44.1
Nov10° / 6412.10.48.72.0
Dec / 7113.217.70.7

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 14% of December, with mostly cloudy or overcast conditions the remaining 75%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12575
22575
32674
42674
52773
62773
72773
82773
92773
102773
112773
122773
132773
142773
152773
162773
172773
182575
192575
202476
212476
222476
232476
242377
252377
262476
272476
282377
292476
302575
312575

Chance of precipitation in December

Any precipitationSnow

Sint-Gillis-Waas gets around 71 mm of rain and snow over 13.2 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 42% and peaks near 43% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1413
2413
3412
4412
5412
6412
7412
8412
9412
10412
11403
12403
13403
14413
15413
16414
17424
18424
19424
20434
21434
22434
23434
24434
25434
26434
27434
28434
29424
30423
31423

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 16 km/h in December.

Across December, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light 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 8:34 AM to 8:55 AM, and sunset from 4:33 PM to 4:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.08:344:33
28.08:354:32
37.98:364:32
47.98:374:31
57.98:394:31
67.88:404:31
77.88:414:30
87.88:424:30
97.88:434:30
107.88:444:30
117.78:454:30
127.78:464:30
137.78:474:30
147.78:484:30
157.78:494:30
167.78:494:30
177.78:504:30
187.78:514:30
197.78:514:31
207.68:524:31
217.68:534:31
227.68:534:32
237.68:544:32
247.68:544:33
257.78:544:33
267.78:554:34
277.78:554:35
287.78:554:36
297.78:554:36
307.78:554:37
317.78:554:38

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 5.33 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 Sint-Gillis-Waas?

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

0.7
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 Sint-Gillis-Waas.

What to pack for Sint-Gillis-Waas in December

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

In December, Sint-Gillis-Waas sees daytime highs around 7°C and nights near 3°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 13 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Sint-Gillis-Waas in December

The nearest coast averages about 8°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 55 km away) is warmest in August at about 19°C and coldest in February near 6°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan6Bracing
Feb6Bracing
Mar6Bracing
Apr9Bracing
May12Bracing
Jun16Cool
Jul18Cool
Aug19Cool
Sep18Cool
Oct15Bracing
Nov11Bracing
Dec8Bracing

UV index in Sint-Gillis-Waas 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 Sint-Gillis-Waas peaks around June 23 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 23UV 6Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Sint-Gillis-Waas 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 Sint-Gillis-Waas is worst in April — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1317 µg/m³Dec 1511 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb13Moderate
Mar17Moderate
Apr17Moderate
May16Moderate
Jun15Moderate
Jul13Moderate
Aug15Moderate
Sep14Moderate
Oct12Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Sint-Gillis-Waas?

Sint-Gillis-Waas sits at 51.2°N, 4.1°E, 5 m above sea level, in Belgium. The nearest listed city is Stekene, 6.0 km away.

LokerenBornem

Topography around Sint-Gillis-Waas

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sint-Gillis-Waas.

Within 3 km, the terrain around Sint-Gillis-Waas has only modest variations in elevation — a maximum elevation change of 25 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 71 m; within 80 km, significant variations in elevation — a maximum elevation change of 290 m.

The land around Sint-Gillis-Waas is covered by cropland (39%) and grassland (36%) within 3 km, cropland (33%) and grassland (28%) within 16 km, and cropland (31%) and grassland (23%) within 80 km.

3 km
25 m
16 km
71 m
80 km
290 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Stekene 6.0 km · Sint-Niklaas 6.0 km · Beveren 9.0 km · Temse 12 km · Hamme 13 km · Zwijndrecht 14 km · Lokeren 16 km · Bornem 16 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 Sint-Gillis-Waas (51.2191°, 4.1237°, elevation 5 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).