Margaret River weather in December

In December, Margaret River sees average daytime highs of 21°C and overnight lows near 16°C, with 13 mm of rain across 2.8 wet days and about 14.2 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 22°C by the end. The sky is clear or mostly clear about 49% of the time in December, and the air most often feels dry.

Daylight stretches from about 14 h 06 min at the start of December to 14 h 12 min by month's end. Set against the rest of the year, December is Margaret River's 3rd-clearest and 7th-windiest month. For the whole year in context, see Margaret River's year-round climate.

Daytime high
21°
4th warmest
Overnight low
16°
8th coldest
Rainfall
13 mm
2.8 wet days
Daylight
14 h 12 min
5:08 AM – 7:23 PM
Cloud cover
42%
3rd clearest
Wind
22 km/h
7th windiest
Solar energy
7.67 kWh/m²
Travel score
7.8
out of 10

Margaret River is town in Western Australia.

Density
124/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 22°C by the end.

A typical December day in Margaret River reaches about 21°C in the afternoon and slips back to 16°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 25°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12015
22015
32015
42015
52015
62015
72015
82015
92015
102015
112015
122115
132115
142115
152115
162116
172116
182116
192116
202116
212116
222116
232116
242216
252216
262216
272216
282216
292216
302216
312216

Margaret River weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 17°121.9148.4
Feb23° / 17°91.613.38.6
Mar22° / 17°223.312.38.0
Apr21° / 16°346.111.27.0
May19° / 15°9410.910.36.0
Jun17° / 13°13614.49.84.9
Jul16° / 13°15316.1104.4
Aug16° / 12°11514.110.74.5
Sep16° / 12°7812.311.84.8
Oct17° / 13°416.912.96.1
Nov19° / 14°265.113.87.1
Dec21° / 16°132.814.27.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 20% of December, with mostly cloudy or overcast conditions the remaining 32%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36238
46238
56238
66238
76238
86238
96337
106337
116436
126535
136634
146634
156733
166832
176832
186931
197030
207030
217228
227228
237327
247426
257426
267525
277525
287624
297624
307624
317723

Chance of precipitation in December

Any precipitation

Margaret River gets around 13 mm of rain over 2.8 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 9% and peaks near 15% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
115
215
314
414
514
613
713
813
912
1012
1112
1211
1311
1410
1510
169
179
188
198
207
217
226
236
246
255
265
275
284
294
304
314

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 54% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1712540
2712540
3702550
4692650
5682750
6662860
7652960
8633070
9613270
10593380
11583480
12563590
13553690
14543790
15533890
165139100
175139100
185040100
194940100
204940110
214841110
224841110
234741111
244741121
254641121
264641121
274541131
284441131
294342141
304342141
314242151

Wind in December

Winds average 22 km/h in December.

Across December, daily wind ranges from about 22 km/h on the calmest days to 23 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
122breezy
222breezy
322breezy
422breezy
522breezy
622breezy
722breezy
822breezy
923breezy
1023breezy
1123breezy
1223breezy
1323breezy
1423breezy
1523breezy
1623breezy
1723breezy
1823breezy
1923breezy
2023breezy
2122breezy
2222breezy
2322breezy
2422breezy
2523breezy
2623breezy
2723breezy
2823breezy
2923breezy
3023breezy
3123breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 h 06 min at the start of December to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 5:07 AM to 5:16 AM, and sunset from 7:12 PM to 7:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:077:12
214.15:067:13
314.15:067:14
414.15:067:15
514.25:067:16
614.25:067:16
714.25:077:17
814.25:077:18
914.25:077:19
1014.25:077:19
1114.25:077:20
1214.25:077:21
1314.25:087:21
1414.25:087:22
1514.25:087:23
1614.25:087:23
1714.35:097:24
1814.35:097:25
1914.35:097:25
2014.35:107:26
2114.35:107:26
2214.35:117:27
2314.35:117:27
2414.35:127:27
2514.35:127:28
2614.35:137:28
2714.35:137:29
2814.25:147:29
2914.25:157:29
3014.25:157:30
3114.25:167:30

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.67 kWh/m².

For context, solar energy here swings from a low near 2.12 kWh/m² to a high of 7.83 kWh/m² in January across the year — December's 7.67 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.3Intense
27.3Intense
37.3Intense
47.3Intense
57.4Intense
67.4Intense
77.4Intense
87.4Intense
97.5Intense
107.5Intense
117.5Intense
127.6Intense
137.6Intense
147.6Intense
157.7Intense
167.7Intense
177.7Intense
187.7Intense
197.8Intense
207.8Intense
217.8Intense
227.9Intense
237.9Intense
248.0Intense
258.0Intense
268.0Intense
278.0Intense
288.1Intense
298.1Intense
308.1Intense
318.1Intense
Planning a trip in December

Hazard calendar for Margaret River

In seasonPeak

In December, Margaret River sits inside its cyclone season. The full year is below, with each hazard's peak months called out.

Margaret River sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Margaret River's rainy season runs May–September, when most of the year's rain falls.

Cyclone
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Margaret River?

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

7.8
Sightseeing
4th-best month of the year
4.7
Beach & pool
4th-best month of the year

December is one of the better times to visit Margaret River for general sightseeing.

What to pack for Margaret River in December

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

In December, Margaret River sees daytime highs around 21°C and nights near 16°C. Pack sun protection. Worth having: a windbreaker.

sun protectiona windbreaker

Sea temperature near Margaret River in December

The nearest coast averages about 20°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 21 km away) is warmest in April at about 22°C and coldest in September near 18°C.

It's comfortable for a long swim from Dec 17 to Jul 8 — about 6.7 months when the water holds above 20°C.

16°18°20°22°24°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb21Refreshing
Mar22Refreshing
Apr22Refreshing
May21Refreshing
Jun21Refreshing
Jul20Cool
Aug19Cool
Sep18Cool
Oct18Cool
Nov19Cool
Dec20Refreshing

UV index in Margaret River in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Margaret River peaks around January 12 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateVery highExtremeJan 12UV 12Jun 20UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep7Very high
Oct8Very high
Nov10Very high
Dec12Extreme
Location & terrain

Where is Margaret River?

Margaret River sits at 34.0°S, 115.1°E, 0 m above sea level, in Australia. The nearest listed city is Busselton, 42 km away.

Topography around Margaret River

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

Within 3 km, the terrain around Margaret River has only modest variations in elevation — a maximum elevation change of 80 m around an average of 92 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 191 m; within 80 km, significant variations in elevation — a maximum elevation change of 375 m.

The land around Margaret River is covered by trees (61%) and grassland (27%) within 3 km, trees (44%), grassland (34%) and water (21%) within 16 km, and water (51%) and trees (36%) within 80 km.

3 km
80 m
16 km
191 m
80 km
375 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Busselton 42 km · Bunbury 87 km · Australind 96 km · Mandurah 170 km · Baldivis 194 km · Rockingham 196 km · Kwinana 203 km · Byford 211 km

Australia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type I
230 V · 50 Hz
Prices
≈ 90% of US
price level, 2025
GDP per capita
$65,130
2025
Happiness
6.9 / 10
World Happiness, 2025
Homicide rate
0.9
per 100k, 2023
Road deaths
4.9
per 100k/yr, 2019
Income group
High
World Bank
Religion
none 38%Roman Catholic 20%Protestant 18%other Christian 4%

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 Margaret River (-33.955°, 115.076°, elevation 0 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).