Gloucester weather in December

In December, Gloucester sees average daytime highs of -1°C and overnight lows near -8°C, with 76 mm of precipitation across 11.4 wet days and about 8.6 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 1°C in the first days to -3°C by the end. The sky is clear or mostly clear about 11% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 48 min at the start of December to 8 h 36 min by month's end. Set against the rest of the year, December is Gloucester's 12th-clearest and 5th-windiest month. For the whole year in context, see Gloucester's year-round climate.

Daytime high
-1°
10th warmest
Overnight low
-8°
3rd coldest
Precipitation
76 mm
11.4 wet days
Daylight
8 h 36 min
7:42 AM – 4:15 PM
Cloud cover
78%
12th clearest
Wind
12 km/h
5th windiest
Solar energy
1.21 kWh/m²
Travel score
0.0
out of 10

Gloucester is suburb of and within the City of Ottawa.

Founded
1792

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 1°C in the first days to -3°C by the end.

A typical December day in Gloucester reaches about -1°C in the afternoon and slips back to -8°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between -9°C and 6°C. Set against its neighbours, December runs about 7°C cooler than November and about 4°C warmer than January.

-20°-10°10°151015202531
Avg high (°C)Avg low (°C)
12-5
22-5
31-5
41-6
51-6
61-6
70-6
80-7
90-7
100-7
11-1-7
12-1-8
13-1-8
14-1-8
15-1-8
16-1-9
17-2-9
18-2-9
19-2-9
20-2-9
21-2-9
22-2-10
23-2-10
24-2-10
25-3-10
26-3-10
27-3-10
28-3-11
29-3-11
30-3-11
31-3-11

How December really feels in Gloucester

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
29 feel bitter (≤ -10°C)

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

Gloucester 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-5° / -14°7010.49.28.90.0
Feb-3° / -13°568.8810.10.0
Mar / -7°7210.26.511.60.1
Apr12° / 9211.32.813.22.9
May19° / 8511.30.214.65.8
Jun24° / 13°9511.3015.46.5
Jul26° / 16°9411.8015.16.3
Aug25° / 15°8610.8013.96.7
Sep21° / 10°909.9012.36.4
Oct13° / 9711.70.610.73.5
Nov / -2°8011.13.59.30.5
Dec-1° / -8°7611.48.78.60.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 79%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21882
31882
41783
51981
61981
71981
81981
92080
102080
112080
122080
132080
142179
152080
162080
172080
182080
192179
202278
212278
222377
232377
242377
252476
262476
272476
282476
292476
302476
312575

Chance of precipitation in December

Any precipitationSnow

Gloucester gets around 76 mm of rain and snow over 11.4 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 37% and peaks near 39% on the wettest days, and about 9 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13922
23922
33823
43823
53724
63725
73725
83626
93626
103627
113627
123628
133628
143628
153629
163629
173729
183729
193729
203729
213729
223729
233729
243729
253730
263730
273730
283730
293730
303830
313831

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
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 48 min at the start of December to 8 h 36 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 7:28 AM to 7:48 AM, and sunset from 4:16 PM to 4:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.87:284:16
28.87:304:16
38.77:314:15
48.77:324:15
58.77:334:15
68.77:344:15
78.77:354:15
88.67:364:15
98.67:374:15
108.67:374:14
118.67:384:15
128.67:394:15
138.67:404:15
148.67:414:15
158.67:414:15
168.67:424:15
178.57:434:15
188.57:434:16
198.57:444:16
208.57:454:17
218.57:454:17
228.57:464:17
238.57:464:18
248.57:474:18
258.57:474:19
268.57:474:20
278.57:484:20
288.67:484:21
298.67:484:22
308.67:484:22
318.67:484:23

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.21 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.21 kWh/m² to a high of 5.99 kWh/m² in June across the year — December's 1.21 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.2Dim
21.2Dim
31.2Dim
41.2Dim
51.2Dim
61.2Dim
71.2Dim
81.2Dim
91.2Dim
101.2Dim
111.2Dim
121.2Dim
131.2Dim
141.2Dim
151.2Dim
161.2Dim
171.2Dim
181.2Dim
191.2Dim
201.2Dim
211.2Dim
221.2Dim
231.2Dim
241.2Dim
251.2Dim
261.2Dim
271.3Dim
281.3Dim
291.3Dim
301.3Dim
311.3Dim
Planning a trip in December

Is December a good time to visit Gloucester?

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 Gloucester.

What to pack for Gloucester in December

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

In December, Gloucester sees daytime highs around -1°C and nights near -8°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 11 days see rain.

a warm layera heavy coatrain gear

UV index in Gloucester 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 Gloucester peaks around July 13 at about 8 (very 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 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 13UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr4Moderate
May6High
Jun7High
Jul8Very high
Aug5Moderate
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Gloucester 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 Gloucester is worst in June — around 15 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodJun 2015 µg/m³Dec 107 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar13Moderate
Apr11Good
May13Moderate
Jun15Moderate
Jul14Moderate
Aug13Moderate
Sep10Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Gloucester?

Gloucester sits at 45.4°N, 75.6°W, 93 m above sea level, in Canada. The nearest listed city is Alta Vista, 4.0 km away.

Topography around Gloucester

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

Within 3 km, the terrain around Gloucester has only modest variations in elevation — a maximum elevation change of 45 m around an average of 96 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 167 m; within 80 km, significant variations in elevation — a maximum elevation change of 524 m.

The land around Gloucester is covered by trees (54%) and artificial surfaces (30%) within 3 km, trees (39%) and artificial surfaces (22%) within 16 km, and trees (61%) and cropland (22%) within 80 km.

3 km
45 m
16 km
167 m
80 km
524 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Alta Vista 4.0 km · Ottawa South 6.0 km · Nepean 7.0 km · Ottawa 8.0 km · Centretown 9.0 km · Vanier 10 km · Hull 11 km · Aylmer 15 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 Gloucester (45.35°, -75.6333°, elevation 93 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).