Bunbury weather in December

In December, Bunbury sees average daytime highs of 26°C and overnight lows near 15°C, with 11 mm of rain across 1.9 wet days and about 14.2 hours of daylight. It is the 4th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 27°C by the end. The sky is clear or mostly clear about 64% of the time in December, and the air most often feels dry.

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

Daytime high
26°
4th warmest
Overnight low
15°
9th coldest
Rainfall
11 mm
1.9 wet days
Daylight
14 h 12 min
5:08 AM – 7:19 PM
Cloud cover
31%
3rd clearest
Wind
17 km/h
3rd windiest
Solar energy
8.21 kWh/m²
Travel score
8.5
out of 10

Bunbury is city and metropolitan area in Western Australia.

Air quality
Good
PM2.5 8.4 µg/m³ · 2016
Density
551/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 24°C in the first days to 27°C by the end.

A typical December day in Bunbury reaches about 26°C in the afternoon and slips back to 15°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 31°C. Set against its neighbours, December runs about 3°C warmer than November and about 2°C cooler than January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12414
22414
32414
42414
52414
62414
72514
82514
92514
102514
112515
122515
132515
142615
152615
162615
172615
182615
192615
202615
212615
222716
232716
242716
252716
262716
272716
282716
292716
302716
312716

Bunbury weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 17°111.9148.2
Feb28° / 17°131.613.28.1
Mar26° / 16°223.112.38.2
Apr23° / 14°304.911.27.8
May19° / 12°878.410.36.5
Jun17° / 11°11711.69.85.3
Jul16° / 10°12713.7104.7
Aug16° / 10°10612.310.84.9
Sep17° / 10°749.911.85.6
Oct20° / 11°345.512.87.0
Nov23° / 13°294.913.77.9
Dec26° / 15°111.914.28.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 64% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 21%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17228
27327
37327
47327
57327
67327
77426
87426
97426
107525
117624
127624
137723
147723
157921
167921
177921
188020
198020
208119
218218
228218
238317
248317
258317
268416
278416
288416
298416
308515
318515

Chance of precipitation in December

Any precipitation

Bunbury gets around 11 mm of rain over 1.9 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 7% and peaks near 11% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
111
211
311
410
510
69
79
89
98
108
118
128
138
148
157
167
177
187
196
206
215
225
235
245
254
264
274
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 68% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1781930
2781930
3791920
4782020
5782020
6772120
7752230
8742330
9732430
10722530
11712630
12702730
13692830
14672940
15672940
16663040
17663040
18653140
19643150
20633250
21633250
22623260
23633160
24633160
25613171
26613171
27623071
28613081
29613081
30593191
31593191

Wind in December

Winds average 17 km/h in December.

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 14 hours 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 12 minutes over December. Sunrise moves from 5:06 AM to 5:15 AM, and sunset from 7:09 PM to 7:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.05:067:09
214.15:067:09
314.15:067:10
414.15:067:11
514.15:067:12
614.15:067:13
714.15:067:13
814.15:067:14
914.15:067:15
1014.25:067:16
1114.25:067:16
1214.25:077:17
1314.25:077:18
1414.25:077:18
1514.25:077:19
1614.25:087:19
1714.25:087:20
1814.25:087:21
1914.25:097:21
2014.25:097:22
2114.25:107:22
2214.25:107:23
2314.25:117:23
2414.25:117:24
2514.25:127:24
2614.25:127:24
2714.25:137:25
2814.25:137:25
2914.25:147:25
3014.25:157:26
3114.25:157:26

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 8.21 kWh/m².

For context, solar energy here swings from a low near 2.34 kWh/m² to a high of 8.26 kWh/m² in January across the year — December's 8.21 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.8Intense
27.8Intense
37.9Intense
47.9Intense
57.9Intense
67.9Intense
78.0Intense
88.0Intense
98.0Intense
108.1Intense
118.1Intense
128.1Intense
138.1Intense
148.2Intense
158.2Intense
168.2Intense
178.3Intense
188.3Intense
198.3Intense
208.3Intense
218.4Intense
228.4Intense
238.4Intense
248.5Intense
258.5Intense
268.5Intense
278.5Intense
288.6Intense
298.6Intense
308.6Intense
318.6Intense
Planning a trip in December

Hazard calendar for Bunbury

In seasonPeak

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

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

Bunbury'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 Bunbury?

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

8.5
Sightseeing
1st-best month of the year
7.9
Beach & pool
3rd-best month of the year

December is one of the better times to visit Bunbury for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Bunbury in December

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

In December, Bunbury sees daytime highs around 26°C and nights near 15°C. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

Sea temperature near Bunbury 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 offshore is warmest in February at about 22°C and coldest in September near 17°C.

It's comfortable for a long swim from Dec 8 to May 9 — about 5 months when the water holds above 20°C.

16°18°20°22°24°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb22Refreshing
Mar22Refreshing
Apr21Refreshing
May20Cool
Jun19Cool
Jul18Cool
Aug17Cool
Sep17Cool
Oct17Cool
Nov19Cool
Dec20Refreshing

UV index in Bunbury in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bunbury peaks around January 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateVery highExtremeJan 11UV 13Jun 21UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Extreme
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep8Very high
Oct8Very high
Nov10Very high
Dec13Extreme
Location & terrain

Where is Bunbury?

Bunbury sits at 33.3°S, 115.6°E, 5 m above sea level, in Australia. The nearest listed city is Australind, 9.0 km away.

Topography around Bunbury

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

Within 3 km, the terrain around Bunbury has only modest variations in elevation — a maximum elevation change of 45 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 67 m; within 80 km, significant variations in elevation — a maximum elevation change of 482 m.

The land around Bunbury is covered by water (48%) and artificial surfaces (34%) within 3 km, water (53%) and grassland (21%) within 16 km, and trees (48%) and water (30%) within 80 km.

3 km
45 m
16 km
67 m
80 km
482 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Australind 9.0 km · Busselton 45 km · Margaret River 87 km · Mandurah 89 km · Baldivis 112 km · Rockingham 117 km · Kwinana 123 km · Byford 128 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 Bunbury (-33.3271°, 115.6414°, elevation 5 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).