Kalgoorlie-Boulder climate — normals and trends

Q: What is the climate of Kalgoorlie-Boulder?

Kalgoorlie-Boulder has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 18.9 °C and it receives 246 mm of precipitation per year.

Q: What is the hottest day ever recorded in Kalgoorlie-Boulder?

The hottest day measured in Kalgoorlie-Boulder between 1940 and 2025 was 24 January 1980, reaching 45.4 °C.

Q: What is the coldest day in Kalgoorlie-Boulder?

The coldest day measured in Kalgoorlie-Boulder between 1940 and 2025 was 11 July 2025, at -1.2 °C.

Q: Does it snow in Kalgoorlie-Boulder?

Almost never: Kalgoorlie-Boulder sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Kalgoorlie-Boulder warmed?

Between 1940 and 2025, no statistically significant temperature trend emerges in Kalgoorlie-Boulder.

Q: What is the wettest day in Kalgoorlie-Boulder?

The wettest day measured in Kalgoorlie-Boulder between 1940 and 2025 was 26 February 1995, with 100 mm of rain in 24 hours.

Q: What was the windiest day in Kalgoorlie-Boulder?

The windiest day measured in Kalgoorlie-Boulder between 1940 and 2025 was 13 September 2023, with winds reaching 68.3 km/h.

Q: What is the warmest month in Kalgoorlie-Boulder?

The warmest month in Kalgoorlie-Boulder is January (26.5 °C on average); the coldest is July (11.0 °C).

Q: How much does it rain in Kalgoorlie-Boulder?

Kalgoorlie-Boulder receives on average 246 mm of precipitation per year, spread over about 39 rainy days.

Q: Is it sunny in Kalgoorlie-Boulder?

Kalgoorlie-Boulder gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.

Kalgoorlie-Boulder (Australia) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 18.9 °C and it receives 246 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is January (26.5 °C on average) and the coldest is July (11.0 °C). Rainfall peaks in February.

Kalgoorlie-Boulder averages 0 frost days, 105 hot days (≥ 30 °C) and 39 rainy days per year.

No statistically significant temperature trend emerges for Kalgoorlie-Boulder between 1940 and 2025: over this span, year-to-year swings outweigh the climate signal.

The hottest day of the period reached 45.4 °C (on 24 January 1980) and the coldest -1.2 °C (on 11 July 2025).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

Kalgoorlie-BoulderWestern Australia

coords: -30.75°, 121.47°
period: 1940–2025 · 86 yrs

BWhHot desertWarmest monthJanuaryColdest monthJulyWettest monthFebruaryDriest monthSeptember

Mean daily temperature

18.9°C

Average daily high

25.2°C

Average daily low

12.7°C

Annual rainfall

246mm

Sunshine / day

10.6h

Mean relative humidity

51%

Average peak wind

25.5km/h

Seasonal range

15.5°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

105 d/yr

Rainy days (≥ 1 mm)

39 d/yr

Annual snowfall

0.0 cm

Average feels-like high

22.4 °C

Average feels-like low

9.7 °C

Average peak gust

42.7 km/h

Tropical nights (≥ 20 °C)

38 d/yr

Solar radiation

19.9 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

No clear trend over this period

Over a short window, year-to-year swings outweigh the climate signal. Try 86 years.

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

45.4 °C

24 January 1980

Coldest day

-1.2 °C

11 July 2025

Wettest day

100 mm

26 February 1995

Windiest day

68.3 km/h

13 September 2023

Strongest gust

111.2 km/h

13 September 2023

Hottest feels-like

45.5 °C

28 January 2011

Coldest feels-like

-5.2 °C

11 July 2025

Sunniest day

13.9 h

31 December 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	45.1 °C9 February 2025	-1.2 °C11 July 2025	19.4 °C	303 mm	111	1
2024	44.9 °C21 February 2024	2.2 °C4 August 2024	19.5 °C	283 mm	108	0
2023	43.1 °C19 February 2023	0.2 °C17 July 2023	19.5 °C	116 mm	123	0
2022	41.8 °C13 January 2022	0.8 °C25 July 2022	18.5 °C	226 mm	93	0
2021	41.5 °C16 December 2021	1.0 °C3 September 2021	18.6 °C	271 mm	102	0
2020	43.5 °C29 January 2020	1.8 °C25 July 2020	19.6 °C	134 mm	113	0
2019	44.7 °C13 January 2019	1.0 °C29 June 2019	20.1 °C	116 mm	145	0
2018	43.6 °C5 January 2018	1.4 °C6 July 2018	19.0 °C	258 mm	104	0
2017	41.8 °C16 December 2017	0.8 °C3 July 2017	18.8 °C	258 mm	99	0
2016	41.5 °C12 February 2016	0.4 °C27 June 2016	18.2 °C	219 mm	99	0
2015	44.9 °C21 January 2015	0.8 °C10 August 2015	19.5 °C	199 mm	130	0
2014	43.1 °C13 January 2014	0.5 °C25 July 2014	19.3 °C	366 mm	106	0
2013	45.4 °C9 January 2013	2.3 °C8 July 2013	19.5 °C	322 mm	110	0
2012	42.3 °C17 February 2012	0.3 °C14 August 2012	18.9 °C	235 mm	101	0
2011	45.2 °C28 January 2011	2.1 °C18 August 2011	18.7 °C	321 mm	79	0
2010	44.7 °C7 January 2010	0.2 °C6 July 2010	19.1 °C	164 mm	117	0
2009	44.4 °C12 January 2009	-0.2 °C27 July 2009	19.1 °C	213 mm	110	1
2008	43.6 °C28 January 2008	1.2 °C31 August 2008	18.8 °C	262 mm	100	0
2007	44.4 °C4 February 2007	2.4 °C3 August 2007	19.3 °C	150 mm	116	0
2006	44.6 °C18 January 2006	0.3 °C22 June 2006	18.9 °C	272 mm	107	0
2005	44.1 °C16 February 2005	0.7 °C7 July 2005	19.1 °C	178 mm	120	0
2004	44.2 °C15 January 2004	0.4 °C11 September 2004	18.7 °C	278 mm	107	0
2003	41.6 °C2 February 2003	-0.3 °C26 July 2003	18.9 °C	319 mm	110	1
2002	42.0 °C23 January 2002	0.1 °C28 July 2002	19.3 °C	134 mm	110	0
2001	43.5 °C12 January 2001	-0.3 °C11 September 2001	17.9 °C	369 mm	74	1
2000	41.8 °C26 November 2000	0.1 °C26 July 2000	17.9 °C	385 mm	88	0
1999	42.3 °C17 January 1999	0.9 °C13 June 1999	18.6 °C	286 mm	89	0
1998	43.8 °C21 February 1998	1.3 °C24 June 1998	19.1 °C	270 mm	108	0
1997	42.5 °C1 December 1997	-0.4 °C15 July 1997	18.8 °C	277 mm	106	2
1996	42.0 °C3 March 1996	2.8 °C10 July 1996	19.0 °C	238 mm	103	0
1995	43.3 °C2 December 1995	1.8 °C25 August 1995	17.9 °C	550 mm	77	0
1994	45.0 °C24 January 1994	2.5 °C15 July 1994	19.8 °C	152 mm	122	0
1993	42.7 °C1 February 1993	1.7 °C2 August 1993	18.4 °C	260 mm	94	0
1992	40.7 °C2 March 1992	1.7 °C17 August 1992	17.5 °C	488 mm	74	0
1991	44.0 °C1 February 1991	1.3 °C8 July 1991	19.6 °C	186 mm	117	0
1990	45.2 °C22 January 1990	0.4 °C27 July 1990	18.6 °C	307 mm	94	0
1989	43.3 °C27 December 1989	1.8 °C15 July 1989	18.5 °C	185 mm	98	0
1988	42.4 °C14 December 1988	0.8 °C21 July 1988	18.9 °C	306 mm	87	0
1987	40.9 °C15 January 1987	-0.2 °C20 July 1987	18.7 °C	246 mm	98	1
1986	42.4 °C22 December 1986	-0.3 °C17 July 1986	18.3 °C	241 mm	102	1
1985	42.6 °C12 January 1985	1.6 °C9 July 1985	19.1 °C	214 mm	109	0
1984	40.6 °C11 February 1984	1.4 °C28 June 1984	18.2 °C	290 mm	93	0
1983	42.2 °C15 February 1983	1.0 °C13 July 1983	19.3 °C	239 mm	98	0
1982	41.3 °C5 February 1982	0.8 °C29 July 1982	19.1 °C	256 mm	104	0
1981	40.2 °C11 January 1981	-0.1 °C22 June 1981	18.4 °C	251 mm	93	1
1980	45.4 °C24 January 1980	2.1 °C20 August 1980	19.4 °C	257 mm	117	0
1979	41.7 °C23 January 1979	2.4 °C4 September 1979	18.8 °C	230 mm	109	0
1978	44.0 °C13 January 1978	2.0 °C24 July 1978	18.9 °C	195 mm	107	0
1977	44.2 °C3 February 1977	1.0 °C28 June 1977	19.3 °C	113 mm	114	0
1976	42.5 °C2 January 1976	1.6 °C2 June 1976	18.7 °C	114 mm	101	0
1975	43.2 °C6 February 1975	0.8 °C31 July 1975	17.5 °C	416 mm	86	0
1974	39.5 °C13 December 1974	1.4 °C18 June 1974	17.8 °C	336 mm	90	0
1973	43.8 °C10 March 1973	1.4 °C25 June 1973	18.1 °C	281 mm	95	0
1972	44.6 °C31 December 1972	1.8 °C1 August 1972	19.5 °C	162 mm	125	0
1971	42.3 °C13 January 1971	0.5 °C22 July 1971	18.4 °C	112 mm	102	0
1970	44.1 °C11 December 1970	1.3 °C15 July 1970	19.2 °C	107 mm	122	0
1969	42.1 °C6 January 1969	-0.5 °C12 July 1969	19.4 °C	82 mm	122	2
1968	42.5 °C17 January 1968	1.0 °C29 August 1968	18.0 °C	320 mm	104	0
1967	41.5 °C4 January 1967	2.3 °C13 July 1967	19.1 °C	206 mm	101	0
1966	41.4 °C24 January 1966	1.5 °C11 August 1966	18.3 °C	320 mm	102	0
1965	44.2 °C1 March 1965	3.0 °C10 July 1965	19.6 °C	316 mm	129	0
1964	42.5 °C27 January 1964	2.7 °C27 May 1964	18.7 °C	218 mm	92	0
1963	39.8 °C8 January 1963	2.2 °C15 June 1963	18.5 °C	458 mm	87	0
1962	42.4 °C28 November 1962	3.1 °C29 June 1962	19.7 °C	205 mm	116	0
1961	43.5 °C22 January 1961	2.2 °C24 June 1961	19.9 °C	207 mm	132	0
1960	40.9 °C27 November 1960	1.9 °C3 July 1960	18.1 °C	392 mm	91	0
1959	41.4 °C2 January 1959	3.8 °C27 July 1959	20.0 °C	166 mm	123	0
1958	43.8 °C17 January 1958	2.6 °C24 August 1958	19.7 °C	202 mm	131	0
1957	42.6 °C14 January 1957	0.8 °C14 July 1957	19.7 °C	192 mm	125	0
1956	43.7 °C13 February 1956	0.6 °C24 August 1956	18.6 °C	173 mm	118	0
1955	39.6 °C24 January 1955	2.1 °C22 June 1955	17.5 °C	604 mm	82	0
1954	43.4 °C25 January 1954	1.8 °C8 August 1954	19.3 °C	168 mm	115	0
1953	41.9 °C23 February 1953	1.1 °C4 August 1953	19.1 °C	342 mm	100	0
1952	42.8 °C17 January 1952	-0.1 °C16 July 1952	18.5 °C	138 mm	95	1
1951	42.9 °C10 January 1951	0.6 °C7 August 1951	19.1 °C	205 mm	109	0
1950	42.1 °C3 December 1950	2.2 °C3 July 1950	19.7 °C	145 mm	135	0
1949	42.3 °C25 December 1949	2.0 °C11 June 1949	18.7 °C	227 mm	87	0
1948	41.4 °C26 January 1948	1.1 °C3 July 1948	19.0 °C	187 mm	97	0
1947	41.3 °C9 January 1947	0.8 °C6 September 1947	18.5 °C	215 mm	101	0
1946	42.3 °C22 December 1946	0.5 °C26 July 1946	18.3 °C	255 mm	81	0
1945	42.8 °C24 December 1945	0.8 °C5 July 1945	18.6 °C	349 mm	97	0
1944	44.9 °C21 January 1944	1.1 °C13 August 1944	19.4 °C	181 mm	115	0
1943	41.4 °C29 December 1943	0.3 °C20 July 1943	18.4 °C	205 mm	97	0
1942	39.3 °C31 December 1942	0.7 °C22 August 1942	18.3 °C	203 mm	90	0
1941	43.2 °C14 February 1941	1.1 °C30 July 1941	18.8 °C	164 mm	117	0
1940	42.5 °C13 January 1940	1.6 °C23 July 1940	19.7 °C	155 mm	133	0

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

26.0 °C

+0.8 °C

Hot days (≥ 30 °C)

111 d/yr

Frost days (< 0 °C)

1 d/yr

Annual rainfall

303 mm

+57 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	36.9 °C	+3.3 °C	5 mm	-21 mm
Feb	34.1 °C	+2.0 °C	30 mm	-3 mm
Mar	31.7 °C	+2.1 °C	60 mm	+34 mm
Apr	24.6 °C	-0.6 °C	36 mm	+15 mm
May	22.3 °C	+1.8 °C	5 mm	-18 mm
Jun	18.2 °C	+1.2 °C	49 mm	+22 mm
Jul	16.0 °C	-0.3 °C	21 mm	+1 mm
Aug	18.3 °C	-0.1 °C	40 mm	+23 mm
Sep	22.5 °C	+0.3 °C	3 mm	-7 mm
Oct	27.2 °C	+1.1 °C	44 mm	+33 mm
Nov	27.5 °C	-1.6 °C	7 mm	-10 mm
Dec	33.3 °C	+1.1 °C	4 mm	-11 mm

The year's extremes

Hottest day

45.1 °C

9 Feb 2025

Coldest day

-1.2 °C

11 Jul 2025

Wettest day

35.4 mm

13 Mar 2025

Windiest day

53.3 km/h

14 Sep 2025

Strongest gust

82.8 km/h

14 Sep 2025

Hottest feels-like

42.8 °C

9 Feb 2025

Coldest feels-like

-5.2 °C

11 Jul 2025

Sunniest day

13.9 h

31 Dec 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Kalgoorlie-Boulder?

Kalgoorlie-Boulder has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 18.9 °C and it receives 246 mm of precipitation per year.

What is the hottest day ever recorded in Kalgoorlie-Boulder?

The hottest day measured in Kalgoorlie-Boulder between 1940 and 2025 was 24 January 1980, reaching 45.4 °C.

What is the coldest day in Kalgoorlie-Boulder?

The coldest day measured in Kalgoorlie-Boulder between 1940 and 2025 was 11 July 2025, at -1.2 °C.

Does it snow in Kalgoorlie-Boulder?

Almost never: Kalgoorlie-Boulder sees virtually no snow, with about 0 frost days per year.

Has the climate of Kalgoorlie-Boulder warmed?

Between 1940 and 2025, no statistically significant temperature trend emerges in Kalgoorlie-Boulder.

What is the wettest day in Kalgoorlie-Boulder?

The wettest day measured in Kalgoorlie-Boulder between 1940 and 2025 was 26 February 1995, with 100 mm of rain in 24 hours.

What was the windiest day in Kalgoorlie-Boulder?

The windiest day measured in Kalgoorlie-Boulder between 1940 and 2025 was 13 September 2023, with winds reaching 68.3 km/h.

What is the warmest month in Kalgoorlie-Boulder?

The warmest month in Kalgoorlie-Boulder is January (26.5 °C on average); the coldest is July (11.0 °C).

How much does it rain in Kalgoorlie-Boulder?

Kalgoorlie-Boulder receives on average 246 mm of precipitation per year, spread over about 39 rainy days.

Is it sunny in Kalgoorlie-Boulder?

Kalgoorlie-Boulder gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.

Are there tropical nights in Kalgoorlie-Boulder?

Yes: Kalgoorlie-Boulder has on average 38 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Kalgoorlie-Boulder?

In Kalgoorlie-Boulder, between 1940 and 2025, the highest apparent temperature reached 45.5 °C on 28 January 2011, and the lowest was -5.2 °C on 11 July 2025.

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