Douglas weather in December

In December, Douglas sees average daytime highs of 9°C and overnight lows near 7°C, with 114 mm of precipitation across 18.2 wet days and about 7.2 hours of daylight. It is the 8th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 9°C through the month. The sky is clear or mostly clear about 15% of the time in December, and the air most often feels dry.

Daylight stretches from about 7 h 30 min at the start of December to 7 h 12 min by month's end. Set against the rest of the year, December is Douglas's 12th-clearest and 2nd-windiest month. For the whole year in context, see Douglas's year-round climate.

Daytime high
8th warmest
Overnight low
4th coldest
Precipitation
114 mm
18.2 wet days
Daylight
7 h 06 min
8:41 AM – 3:48 PM
Cloud cover
72%
12th clearest
Wind
35 km/h
2nd windiest
Solar energy
0.5 kWh/m²
Travel score
1.5
out of 10

Douglas is capital city of the Isle of Man.

Density
2,596/km²
people per km²
Founded
1670

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 9°C through the month.

A typical December day in Douglas reaches about 9°C in the afternoon and slips back to 7°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 12°C. Set against its neighbours, December runs about 2°C cooler than November and about 1°C warmer than January.

10°15°151015202531
Avg high (°C)Avg low (°C)
1108
2108
3108
4108
5108
6108
7107
897
997
1097
1197
1297
1397
1497
1597
1697
1797
1897
1997
2097
2197
2297
2397
2497
2597
2697
2797
2886
2986
3086
3186

Douglas weather by month

How December compares with the rest of the year at a glance. December is the 8th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 9716.50.27.71.1
Feb / 7514.20.49.41.0
Mar / 7012.90.511.51.2
Apr / 5911.70.113.71.7
May11° / 5611.2015.72.7
Jun13° / 12°6410.7016.83.6
Jul15° / 14°6712.2016.44.2
Aug16° / 14°7812.9014.64.4
Sep15° / 13°8513.3012.54.1
Oct13° / 11°11716.2010.23.1
Nov11° / 12518.50.18.22.0
Dec / 11418.20.27.21.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 69%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23565
33565
43565
53565
63466
73367
83367
93268
103268
113169
123169
133070
142971
152872
162872
172872
182773
192773
202773
212872
222872
232971
242971
252971
262971
272971
283070
293169
303169
313169

Chance of precipitation in December

Any precipitation

Douglas gets around 114 mm of rain and snow over 18.2 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 58% and peaks near 62% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202531
Rain chance (%)
162
262
362
461
561
660
760
859
959
1059
1158
1258
1357
1457
1557
1657
1756
1856
1957
2057
2157
2257
2357
2457
2557
2657
2757
2857
2956
3056
3156

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 35 km/h in December.

Across December, daily wind ranges from about 35 km/h on the calmest days to 36 km/h at its breeziest. It stays fairly steady from day to day.

010203040151015202531
Wind speed (km/h)Feels
135windy
235windy
335windy
435windy
536windy
636windy
736windy
836windy
936windy
1036windy
1136windy
1236windy
1335windy
1435windy
1535windy
1635windy
1735windy
1835windy
1935windy
2035windy
2135windy
2235windy
2335windy
2435windy
2535windy
2636windy
2736windy
2836windy
2936windy
3036windy
3136windy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 7 h 30 min at the start of December to 7 h 12 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 8:23 AM to 8:46 AM, and sunset from 3:52 PM to 3:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.58:233:52
27.58:253:52
37.48:263:51
47.48:273:50
57.48:293:50
67.38:303:49
77.38:313:49
87.38:333:49
97.28:343:48
107.28:353:48
117.28:363:48
127.28:373:48
137.28:383:48
147.18:393:47
157.18:403:48
167.18:413:48
177.18:413:48
187.18:423:48
197.18:433:48
207.18:433:49
217.18:443:49
227.18:443:49
237.18:453:50
247.18:453:50
257.18:463:51
267.18:463:52
277.18:463:52
287.18:463:53
297.18:463:54
307.18:463:55
317.28:463:56

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.5 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.5 kWh/m² to a high of 5.8 kWh/m² in June across the year — December's 0.5 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.6Dim
20.6Dim
30.6Dim
40.6Dim
50.6Dim
60.6Dim
70.5Dim
80.5Dim
90.5Dim
100.5Dim
110.5Dim
120.5Dim
130.5Dim
140.5Dim
150.5Dim
160.5Dim
170.5Dim
180.5Dim
190.5Dim
200.5Dim
210.5Dim
220.5Dim
230.5Dim
240.5Dim
250.5Dim
260.5Dim
270.5Dim
280.5Dim
290.5Dim
300.5Dim
310.5Dim
Planning a trip in December

Is December a good time to visit Douglas?

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

1.5
Sightseeing
9th-best month of the year
Beach & pool
never really warm enough

December is a weaker month for outdoor sightseeing in Douglas.

What to pack for Douglas in December

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

In December, Douglas sees daytime highs around 9°C and nights near 7°C. Pack a warm layer, rain gear and a windbreaker. About 18 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Douglas in December

The nearest coast averages about 10°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 15°C and coldest in March near 8°C.

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

5°10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan9Bracing
Feb8Bracing
Mar8Bracing
Apr8Bracing
May10Bracing
Jun12Bracing
Jul14Bracing
Aug15Cool
Sep15Bracing
Oct14Bracing
Nov12Bracing
Dec10Bracing

UV index in Douglas in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 0. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Douglas peaks around August 11 at about 6 (high) — a little sun protection helps at midday. It bottoms out near December 21 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 5 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowAug 11UV 6Dec 21UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr3Moderate
May5High
Jun5High
Jul5High
Aug6High
Sep3Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Douglas?

Douglas sits at 54.1°N, 4.5°W, 31 m above sea level, in Isle of Man. The nearest listed city is Whitehaven, 73 km away.

Topography around Douglas

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

Within 3 km, the terrain around Douglas has only modest variations in elevation — a maximum elevation change of 145 m around an average of 36 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 617 m; within 80 km, large variations in elevation — a maximum elevation change of 613 m.

The land around Douglas is covered by water (40%) and grassland (26%) within 3 km, water (52%) and grassland (36%) within 16 km, and water (88%) within 80 km.

3 km
145 m
16 km
617 m
80 km
613 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Whitehaven 73 km · Workington 82 km · Barrow in Furness 82 km · Newtownards 92 km · Bangor 95 km · Fleetwood 99 km · Thornton-Cleveleys 100 km · Blackpool 101 km

Isle of Man travel facts

Power plugs
Type G
230 V · 50 Hz
GDP per capita
$90,015
2023
Safe drinking water
100%
of population, 2024
Homicide rate
1.2
per 100k, 2015
Income group
High
World Bank
Religion
Christian 55%none 44%Muslim 1%Buddhist 1%

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 Douglas (54.15°, -4.4833°, elevation 31 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).