Kalgoorlie weather in December

In December, Kalgoorlie sees average daytime highs of 32°C and overnight lows near 17°C, with 18 mm of rain across 2.8 wet days and about 14 hours of daylight. It is the 3rd-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 31°C in the first days to 33°C by the end. The sky is clear or mostly clear about 65% of the time in December, and the air most often feels dry.

Daylight stretches from about 13 h 48 min at the start of December to 14 hours by month's end. Set against the rest of the year, December is Kalgoorlie's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Kalgoorlie's year-round climate.

Daytime high
32°
3rd warmest
Overnight low
17°
10th coldest
Rainfall
18 mm
2.8 wet days
Daylight
14 hours
4:51 AM – 6:50 PM
Cloud cover
31%
2nd clearest
Wind
20 km/h
2nd windiest
Solar energy
7.94 kWh/m²
Travel score
5.0
out of 10

Kalgoorlie is city in the Goldfields-Esperance region of Western Australia.

Density
282/km²
people per km²
Founded
1893

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 31°C in the first days to 33°C by the end.

A typical December day in Kalgoorlie reaches about 32°C in the afternoon and slips back to 17°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 39°C. Set against its neighbours, December runs about 3°C warmer than November and about 2°C cooler than January.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
13116
23116
33116
43116
53116
63116
73116
83117
93117
103117
113117
123117
133117
143217
153217
163217
173217
183218
193218
203218
213318
223318
233318
243318
253318
263318
273319
283319
293319
303419
313419

How December really feels in Kalgoorlie

Once humidity and wind are folded in, December averages 15 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
15
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Kalgoorlie weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan34° / 19°303.113.84.0
Feb32° / 19°403.913.14.7
Mar29° / 17°343.412.26.6
Apr26° / 14°193.311.38.0
May21° / 10°203.210.57.7
Jun18° / 194.1106.6
Jul17° / 194.110.26.5
Aug19° / 203.810.97.4
Sep23° / 112.611.88.4
Oct27° / 12°132.512.88.2
Nov29° / 15°203.413.66.6
Dec32° / 17°182.8145.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% 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 21%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17723
27723
37723
47723
57624
67624
77624
87624
97624
107624
117624
127723
137822
147822
157822
167921
178020
188020
198020
208119
218119
228119
238218
248218
258218
268218
278218
288218
298119
308119
318119

Chance of precipitation in December

Any precipitation

Kalgoorlie gets around 18 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 10% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
19
29
310
410
510
610
710
810
910
1010
1110
1210
139
149
159
169
179
189
199
209
219
229
239
249
259
268
278
288
298
308
318

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 87% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
193520
293520
393520
493520
593520
693520
791630
891630
990730
1090730
1188831
1288831
1387931
1486941
15851041
16851041
17851041
18851140
19841150
20831151
21831151
22831151
23831151
24831151
25831151
26831151
27831151
28831142
29831142
30831142
31831142

Wind in December

Winds average 20 km/h in December.

Across December, daily wind ranges from about 20 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
120breezy
220breezy
320breezy
420breezy
520breezy
620breezy
720breezy
820breezy
920breezy
1020breezy
1120breezy
1220breezy
1320breezy
1420breezy
1520breezy
1620breezy
1720breezy
1820breezy
1920breezy
2020breezy
2120breezy
2220breezy
2320breezy
2420breezy
2520breezy
2620breezy
2720breezy
2820breezy
2920breezy
3020breezy
3120breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 48 min at the start of December to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over December. Sunrise moves from 4:48 AM to 4:58 AM, and sunset from 6:39 PM to 6:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.84:486:39
213.94:486:40
313.94:486:41
413.94:486:42
513.94:496:42
613.94:496:43
713.94:496:44
813.94:496:44
913.94:496:45
1013.94:496:46
1114.04:496:47
1214.04:506:47
1314.04:506:48
1414.04:506:48
1514.04:516:49
1614.04:516:50
1714.04:516:50
1814.04:526:51
1914.04:526:51
2014.04:526:52
2114.04:536:52
2214.04:536:53
2314.04:546:53
2414.04:546:54
2514.04:556:54
2614.04:556:55
2714.04:566:55
2814.04:566:55
2914.04:576:56
3014.04:586:56
3114.04:586:56

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.94 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.76 kWh/m² to a high of 7.94 kWh/m² in December across the year — December's 7.94 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.9Intense
27.9Intense
37.9Intense
47.9Intense
57.9Intense
67.9Intense
77.9Intense
87.9Intense
97.9Intense
107.9Intense
117.9Intense
127.9Intense
137.9Intense
147.9Intense
157.9Intense
167.9Intense
177.9Intense
187.9Intense
198.0Intense
208.0Intense
218.0Intense
228.0Intense
238.1Intense
248.1Intense
258.1Intense
268.1Intense
278.2Intense
288.2Intense
298.2Intense
308.2Intense
318.2Intense
Planning a trip in December

Is December a good time to visit Kalgoorlie?

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

5.0
Sightseeing
10th-best month of the year
7.9
Beach & pool
4th-best month of the year

December is a reasonable time to visit Kalgoorlie for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Kalgoorlie in December

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

In December, Kalgoorlie sees daytime highs around 32°C and nights near 17°C. Pack light clothes and sun protection. Worth having: a windbreaker.

light clothessun protectiona windbreaker

UV index in Kalgoorlie in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kalgoorlie peaks around January 11 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeHighModerateHighVery highExtremeJan 11UV 14Jun 20UV 4
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr7High
May5Moderate
Jun4Moderate
Jul4Moderate
Aug5Moderate
Sep7Very high
Oct10Extreme
Nov11Extreme
Dec14Extreme
Location & terrain

Where is Kalgoorlie?

Kalgoorlie sits at 30.7°S, 121.5°E, 387 m above sea level, in Australia. The nearest listed city is Ellenbrook, 535 km away.

EllenbrookGosnellsByfordMorleyThornlieBallajuraLandsdaleCanning Vale

Topography around Kalgoorlie

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

Within 3 km, the terrain around Kalgoorlie has only modest variations in elevation — a maximum elevation change of 196 m around an average of 378 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 341 m; within 80 km, significant variations in elevation — a maximum elevation change of 410 m.

The land around Kalgoorlie is covered by artificial surfaces (32%) and grassland (27%) within 3 km, trees (42%), shrubs (25%) and grassland (24%) within 16 km, and trees (38%), shrubs (32%) and grassland (23%) within 80 km.

3 km
196 m
16 km
341 m
80 km
410 m
treesshrubsgrasslandartificial surfacesbare terrainwater
December weather nearby: Ellenbrook 535 km · Gosnells 540 km · Byford 543 km · Morley 544 km · Thornlie 544 km · Ballajura 544 km · Landsdale 546 km · Canning Vale 547 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 Kalgoorlie (-30.7461°, 121.4742°, elevation 387 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).