Cobourg weather in December

In December, Cobourg sees average daytime highs of 2°C and overnight lows near -4°C, with 71 mm of precipitation across 11.1 wet days and about 8.8 hours of daylight. It is the 10th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 4°C in the first days to -0°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 9 hours at the start of December to 8 h 48 min by month's end. Set against the rest of the year, December is Cobourg's 12th-clearest and 1st-windiest month. For the whole year in context, see Cobourg's year-round climate.

Daytime high
10th warmest
Overnight low
-4°
4th coldest
Precipitation
71 mm
11.1 wet days
Daylight
8 h 42 min
7:47 AM – 4:31 PM
Cloud cover
76%
12th clearest
Wind
17 km/h
1st windiest
Solar energy
1.32 kWh/m²
Travel score
0.0
out of 10

Cobourg is town in Ontario, Canada.

Density
809/km²
people per km²
Founded
1798

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 4°C in the first days to -0°C by the end.

A typical December day in Cobourg reaches about 2°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 -5°C and 7°C. Set against its neighbours, December runs about 6°C cooler than November and about 4°C warmer than January.

-20°-10°10°151015202531
Avg high (°C)Avg low (°C)
14-1
24-1
34-1
44-2
53-2
63-2
73-2
83-2
93-3
102-3
112-3
122-3
132-3
142-4
152-4
161-4
171-4
181-4
191-4
201-4
211-5
221-5
231-5
241-5
250-5
260-5
270-5
280-6
290-6
300-6
310-6

How December really feels in Cobourg

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
13 feel bitter (≤ -10°C)

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Cobourg weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-2° / -9°6710.98.59.10.0
Feb-2° / -9°528.26.610.20.0
Mar / -4°6110.35.411.60.0
Apr / 8410.6213.21.9
May15° / 7010.6014.54.7
Jun22° / 14°7810.4015.26.5
Jul25° / 18°7610.2014.96.9
Aug24° / 17°7510013.87.0
Sep20° / 13°809.2012.36.5
Oct14° / 8411.70.110.83.7
Nov / 7510.32.49.41.0
Dec / -4°7111.16.28.80.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 76%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12476
22476
32476
42476
52575
62575
72575
82575
92575
102575
112674
122674
132575
142575
152575
162575
172575
182575
192476
202377
212377
222377
232377
242377
252377
262278
272278
282278
292278
302278
312179

Chance of precipitation in December

Any precipitationSnow

Cobourg gets around 71 mm of rain and snow over 11.1 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 36% and peaks near 38% on the wettest days, and about 6 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13815
23815
33816
43716
53717
63717
73618
83618
93619
103519
113520
123420
133420
143420
153420
163421
173421
183421
193420
203520
213520
223521
233521
243521
253622
263622
273623
283724
293724
303725
313726

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 17 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 17 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
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light 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 9 hours at the start of December to 8 h 48 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 7:34 AM to 7:53 AM, and sunset from 4:31 PM to 4:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.07:344:31
28.97:354:31
38.97:364:30
48.97:374:30
58.97:384:30
68.97:394:30
78.87:404:30
88.87:414:30
98.87:424:30
108.87:424:30
118.87:434:30
128.87:444:30
138.87:454:30
148.77:464:30
158.77:464:30
168.77:474:31
178.77:484:31
188.77:484:31
198.77:494:32
208.77:494:32
218.77:504:32
228.77:504:33
238.77:514:33
248.77:514:34
258.77:524:34
268.77:524:35
278.77:524:36
288.77:534:36
298.77:534:37
308.77:534:38
318.87:534:38

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.32 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.32 kWh/m² to a high of 6.46 kWh/m² in June across the year — December's 1.32 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.4Dim
21.4Dim
31.4Dim
41.4Dim
51.4Dim
61.4Dim
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
291.4Dim
301.4Dim
311.4Dim
Planning a trip in December

Is December a good time to visit Cobourg?

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 Cobourg.

What to pack for Cobourg in December

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

In December, Cobourg sees daytime highs around 2°C and nights near -4°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 11 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Cobourg in December

The nearest coast averages about 5°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 21°C and coldest in March near 2°C.

It's comfortable for a long swim from Jul 23 to Sep 6 — about 1.5 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar2Bracing
Apr3Bracing
May6Bracing
Jun14Bracing
Jul20Cool
Aug21Refreshing
Sep19Cool
Oct14Bracing
Nov8Bracing
Dec5Bracing

UV index in Cobourg 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 Cobourg peaks around June 22 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 22UV 8Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May6High
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Cobourg?

Cobourg sits at 44.0°N, 78.2°W, 82 m above sea level, in Canada. The nearest listed city is Peterborough, 40 km away.

Topography around Cobourg

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

Within 3 km, the terrain around Cobourg has only modest variations in elevation — a maximum elevation change of 65 m around an average of 86 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 282 m; within 80 km, significant variations in elevation — a maximum elevation change of 394 m.

The land around Cobourg is covered by water (42%), trees (21%) and artificial surfaces (21%) within 3 km, water (48%) and trees (23%) within 16 km, and water (46%) and trees (29%) within 80 km.

3 km
65 m
16 km
282 m
80 km
394 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Peterborough 40 km · Bowmanville 42 km · Quinte West 54 km · Oshawa 55 km · Whitby 62 km · Lindsay 63 km · Brooklin 64 km · Belleville 67 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 Cobourg (43.9598°, -78.1651°, elevation 82 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).