Welland weather in December

In December, Welland sees average daytime highs of 3°C and overnight lows near -1°C, with 83 mm of precipitation across 12 wet days and about 8.9 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 5°C in the first days to 1°C by the end. The sky is clear or mostly clear about 8% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 06 min at the start of December to 8 h 54 min by month's end. Set against the rest of the year, December is Welland's 11th-clearest and 2nd-windiest month. For the whole year in context, see Welland's year-round climate.

Daytime high
10th warmest
Overnight low
-1°
4th coldest
Precipitation
83 mm
12 wet days
Daylight
8 h 48 min
7:48 AM – 4:38 PM
Cloud cover
80%
11th clearest
Wind
21 km/h
2nd windiest
Solar energy
1.27 kWh/m²
Travel score
0.0
out of 10

Welland is small city in Niagara Region, Ontario, Canada.

Founded
1788

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 5°C in the first days to 1°C by the end.

A typical December day in Welland reaches about 3°C in the afternoon and slips back to -1°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between -3°C and 8°C. Set against its neighbours, December runs about 5°C cooler than November and about 3°C warmer than January.

-10°10°151015202531
Avg high (°C)Avg low (°C)
151
251
351
451
540
640
740
840
940
103-1
113-1
123-1
133-1
143-1
153-1
163-1
172-2
182-2
192-2
202-2
212-2
222-2
232-2
242-2
252-3
261-3
271-3
281-3
291-3
301-3
311-3

How December really feels in Welland

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.

Welland weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -6°7712.48.79.20.0
Feb-1° / -6°609.4710.20.0
Mar / -3°7710.94.811.60.0
Apr / 10011.91.813.11.7
May16° / 11°9012.2014.44.8
Jun22° / 17°10312.1015.16.4
Jul25° / 20°10512014.86.7
Aug24° / 20°9010.9013.86.9
Sep21° / 16°9010.3012.36.4
Oct14° / 10°9812.40.110.83.9
Nov / 8511.62.59.51.2
Dec / -1°83126.88.90.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 83%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12080
21981
31981
41981
52080
62080
72080
82080
92080
101981
111981
121981
131981
141981
151882
161882
171882
181882
191882
201783
211684
221585
231585
241585
251585
261387
271387
281387
291288
301288
311288

Chance of precipitation in December

Any precipitationSnow

Welland gets around 83 mm of rain and snow over 12 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 39% and peaks near 42% on the wettest days, and about 7 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
14215
24216
34116
44117
54118
64019
74020
84020
94021
103922
113922
123922
133923
143923
153923
163923
173923
183823
193823
203823
213823
223823
233823
243823
253823
263824
273924
283924
294025
304025
314126

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 21 km/h in December.

Across December, daily wind ranges from about 21 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2221breezy
2321breezy
2421breezy
2521breezy
2621breezy
2721breezy
2821breezy
2921breezy
3021breezy
3121breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 06 min at the start of December to 8 h 54 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 7:35 AM to 7:54 AM, and sunset from 4:39 PM to 4:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.17:354:39
29.07:364:38
39.07:374:38
49.07:384:38
59.07:394:38
69.07:404:38
78.97:414:38
88.97:424:37
98.97:434:37
108.97:434:38
118.97:444:38
128.97:454:38
138.97:464:38
148.97:474:38
158.87:474:38
168.87:484:38
178.87:494:39
188.87:494:39
198.87:504:39
208.87:504:40
218.87:514:40
228.87:514:41
238.87:524:41
248.87:524:42
258.87:534:42
268.87:534:43
278.87:534:43
288.87:544:44
298.87:544:45
308.97:544:45
318.97:544:46

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.27 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.27 kWh/m² to a high of 6.37 kWh/m² in June across the year — December's 1.27 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.4Dim
21.3Dim
31.3Dim
41.3Dim
51.3Dim
61.3Dim
71.3Dim
81.3Dim
91.3Dim
101.3Dim
111.3Dim
121.3Dim
131.3Dim
141.3Dim
151.3Dim
161.3Dim
171.3Dim
181.3Dim
191.3Dim
201.3Dim
211.3Dim
221.3Dim
231.3Dim
241.3Dim
251.3Dim
261.3Dim
271.3Dim
281.3Dim
291.3Dim
301.3Dim
311.3Dim
Planning a trip in December

Is December a good time to visit Welland?

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

0.0
Sightseeing
9th-best month of the year
0.0
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Welland.

What to pack for Welland in December

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

In December, Welland sees daytime highs around 3°C and nights near -1°C. Pack a warm layer and a heavy coat. Worth having: rain gear and a windbreaker. About 12 days see rain.

a warm layera heavy coatrain geara windbreaker

Sea temperature near Welland in December

The nearest coast averages about 6°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 16 km away) is warmest in August at about 23°C and coldest in February near 1°C.

It's comfortable for a long swim from Jul 4 to Sep 20 — about 2.6 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan3Bracing
Feb1Bracing
Mar1Bracing
Apr3Bracing
May9Bracing
Jun17Cool
Jul22Refreshing
Aug23Refreshing
Sep21Refreshing
Oct16Cool
Nov10Bracing
Dec6Bracing

UV index in Welland 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 Welland peaks around June 21 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highHighModerateLowJun 21UV 8Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5High
May7High
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Welland 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 Welland is worst in July — around 15 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1315 µg/m³Nov 177 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar12Good
Apr12Moderate
May14Moderate
Jun15Moderate
Jul15Moderate
Aug13Moderate
Sep11Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Welland?

Welland sits at 43.0°N, 79.2°W, 180 m above sea level, in Canada. The nearest listed city is Port Colborne, 9.0 km away.

Topography around Welland

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

Within 3 km, the terrain around Welland has only modest variations in elevation — a maximum elevation change of 47 m around an average of 180 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 181 m; within 80 km, significant variations in elevation — a maximum elevation change of 588 m.

The land around Welland is covered by artificial surfaces (36%), trees (28%) and grassland (27%) within 3 km, trees (33%), cropland (30%) and grassland (21%) within 16 km, and water (40%) and trees (29%) within 80 km.

3 km
47 m
16 km
181 m
80 km
588 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Port Colborne 9.0 km · Thorold 15 km · Niagara Falls 20 km · Niagara Falls 20 km · St. Catharines 21 km · Grand Island 24 km · Fort Erie 27 km · Kenmore 31 km

Canada travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 83% of US
price level, 2025
GDP per capita
$55,698
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
2
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 53%none 35%Muslim 5%Hindu 2%

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 Welland (42.9834°, -79.2496°, elevation 180 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).