Perth weather in December

In December, Perth sees average daytime highs of 6°C and overnight lows near 1°C, with 91 mm of precipitation across 13.2 wet days and about 6.7 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 6°C through the month. The sky is clear or mostly clear about 13% of the time in December, and the air most often feels dry.

Daylight stretches from about 7 hours at the start of December to 6 h 42 min by month's end. Set against the rest of the year, December is Perth's 5th-clearest and 4th-windiest month. For the whole year in context, see Perth's year-round climate.

Daytime high
11th warmest
Overnight low
3rd coldest
Precipitation
91 mm
13.2 wet days
Daylight
6 h 36 min
8:52 AM – 3:28 PM
Cloud cover
76%
5th clearest
Wind
12 km/h
4th windiest
Solar energy
0.34 kWh/m²
Travel score
0.3
out of 10

Perth is city in Perth and Kinross, Scotland, United Kingdom.

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 6°C through the month.

A typical December day in Perth reaches about 6°C in the afternoon and slips back to 1°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 1°C and 10°C. Set against its neighbours, December runs about 3°C cooler than November and on par with January.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
172
272
362
462
562
662
761
861
961
1061
1161
1261
1361
1461
1561
1661
1761
1851
1951
2051
2151
2251
2351
2451
2551
2651
2751
2851
2951
3051
3151

How December really feels in Perth

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.

Perth 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 / 10015.55.77.30.2
Feb / 7612.34.59.10.5
Mar / 7513.73.611.41.3
Apr11° / 6412.61.213.92.4
May14° / 7112.80.116.13.6
Jun16° / 7413.3017.34.4
Jul18° / 11°8214.2016.85.1
Aug18° / 10°8713.8014.95.0
Sep15° / 6911.7012.54.2
Oct12° / 10113.80.110.12.7
Nov / 9014.21.17.91.2
Dec / 9113.236.70.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 75%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22872
32872
42773
52773
62773
72674
82674
92575
102575
112575
122575
132575
142476
152476
162476
172476
182476
192575
202575
212575
222575
232575
242575
252575
262575
272476
282476
292476
302476
312575

Chance of precipitation in December

Any precipitationSnow

Perth gets around 91 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 43% and peaks near 48% on the wettest days, and about 3 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1488
2478
3478
4468
5469
6459
7449
8439
9439
10429
11429
12419
13419
14419
15419
16419
17419
18419
19419
204110
214210
224210
234211
244311
254312
264412
274513
284514
294614
304615
314715

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 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 7 hours at the start of December to 6 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 8:33 AM to 8:57 AM, and sunset from 3:34 PM to 3:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.08:333:34
27.08:343:34
36.98:363:33
46.98:373:32
56.98:393:31
66.88:403:31
76.88:423:30
86.88:433:30
96.88:443:29
106.78:453:29
116.78:473:29
126.78:483:28
136.78:493:28
146.68:503:28
156.68:513:28
166.68:523:28
176.68:523:28
186.68:533:28
196.68:543:29
206.68:553:29
216.68:553:29
226.68:563:30
236.68:563:30
246.68:563:31
256.68:573:31
266.68:573:32
276.68:573:33
286.68:573:34
296.68:573:35
306.68:573:36
316.78:573:37

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.34 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.34 kWh/m² to a high of 4.71 kWh/m² in May across the year — December's 0.34 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.4Dim
20.4Dim
30.4Dim
40.4Dim
50.4Dim
60.4Dim
70.4Dim
80.4Dim
90.4Dim
100.3Dim
110.3Dim
120.3Dim
130.3Dim
140.3Dim
150.3Dim
160.3Dim
170.3Dim
180.3Dim
190.3Dim
200.3Dim
210.3Dim
220.3Dim
230.3Dim
240.3Dim
250.3Dim
260.3Dim
270.3Dim
280.3Dim
290.3Dim
300.3Dim
310.3Dim
Planning a trip in December

Is December a good time to visit Perth?

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

0.3
Sightseeing
11th-best month of the year
0.0
Beach & pool
7th-best month of the year

December is a weaker month for outdoor sightseeing in Perth.

What to pack for Perth in December

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

In December, Perth sees daytime highs around 6°C and nights near 1°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 Perth 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 36 km away) is warmest in August at about 14°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°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan7Bracing
Feb6Bracing
Mar6Bracing
Apr7Bracing
May10Bracing
Jun12Bracing
Jul14Bracing
Aug14Bracing
Sep13Bracing
Oct12Bracing
Nov10Bracing
Dec8Bracing

UV index in Perth 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 Perth peaks around June 23 at about 5 (high) — a little sun protection helps at midday. It bottoms out near December 19 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 23UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5Moderate
Jun5High
Jul5High
Aug5Moderate
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low
Location & terrain

Where is Perth?

Perth sits at 56.4°N, 3.4°W, 10 m above sea level, in United Kingdom. The nearest listed city is Glenrothes, 27 km away.

Topography around Perth

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

Within 3 km, the terrain around Perth has only modest variations in elevation — a maximum elevation change of 222 m around an average of 54 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 415 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,320 m.

The land around Perth is covered by trees (32%), grassland (29%) and artificial surfaces (24%) within 3 km, cropland (37%), grassland (36%) and trees (21%) within 16 km, and grassland (55%) within 80 km.

3 km
222 m
16 km
415 m
80 km
1,320 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Glenrothes 27 km · Dundee 29 km · Kirkcaldy 35 km · Dunfermline 36 km · Alloa 38 km · Saint Andrews 39 km · Stirling 44 km · Grangemouth 46 km

United Kingdom travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type D / G / M
230 V · 50 Hz
Prices
≈ 89% of US
price level, 2025
GDP per capita
$57,602
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.1
per 100k, 2021
Road deaths
3.2
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 60%none 26%Muslim 4%other 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 Perth (56.3952°, -3.4314°, elevation 10 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).