Climate for Station: Kalgoorlie-Boulder Airport, Western Australia, Australia

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Boulder

Western Australia, Australia

2026-03-01 10:31

21.3°C

Feels 21.3°C

H: 27.8°C / L: 14.4°C

Precip: 0mm | Wind: 24.1 kph

▼ 3.2°C vs historical high

Sunny

2026-03-02

H: 29.7°C

L: 14.1°C

Rain: 0%

Rainfall: 0mm

Wind: 37.8kph

▼ 0.9°C

2026-03-03

H: 32.2°C

L: 17.5°C

Rain: 0%

Rainfall: 0mm

Wind: 27.7kph

▲ 1.2°C

2026-03-04

H: 34°C

L: 19.5°C

Rain: 0%

Rainfall: 0mm

Wind: 29.2kph

▲ 3.2°C

2026-03-05

H: 36.1°C

L: 21.7°C

Rain: 0%

Rainfall: 0mm

Wind: 30.2kph

▲ 5.5°C

2026-03-06

H: 36.3°C

L: 18.9°C

Rain: 0%

Rainfall: 0mm

Wind: 24.1kph

▲ 5.3°C

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Climate Analysis & Overview

Kalgoorlie-Boulder Airport is experiencing a warming trend, with significant changes in temperature highs and lows over the past decade. The Precipitation Concentration Index indicates a more even distribution of rainfall, aligning with regional climate goals for stability in precipitation patterns.

Desert Climate Dynamics

Kalgoorlie-Boulder Airport, located in the semi-arid region of Western Australia, falls under the Köppen climate classification of BSh, indicative of a hot semi-arid climate. This classification is characterised by hot summers and mild winters, with limited and irregular precipitation. The local geography, dominated by flat landscapes and sparse vegetation, contributes to these climatic conditions, allowing for significant temperature fluctuations.

Warming Trends and Temperature Extremes

The station data reveals a noticeable warming trend. Over the last decade, the average high temperatures have increased by 1.06°C (1.91°F), while the lows have risen by 0.64°C (1.15°F). This recent trend is more pronounced than the all-time trend, which shows a rise of 0.14°C (0.25°F) for highs and 0.19°C (0.34°F) for lows. These figures suggest an accelerated warming in recent years. The record temperatures at this location have reached a maximum of 46.5°C (115.7°F) and a minimum of -3.4°C (25.9°F), highlighting the extreme conditions that can occur in this region.

Precipitation Patterns: A Shift Towards Evenness

The Precipitation Concentration Index (PCI) at Kalgoorlie-Boulder Airport has decreased from a baseline of 16.37 to a current value of 12.59. This indicates a more even distribution of rainfall events, moving away from highly concentrated precipitation occurrences. Such a shift can be beneficial for agriculture and water management, as it reduces the risk of drought and flooding, aligning with Australia's regional climate goals for more stable and predictable weather patterns.

Regional Climate Implications

The warming trends observed at Kalgoorlie-Boulder Airport are consistent with broader climatic changes across Australia, where increasing temperatures are a growing concern. These trends are critical for understanding regional climate dynamics and planning for future adaptations. The more evenly distributed precipitation, as indicated by the PCI, suggests a positive development in managing water resources, crucial for sustaining the semi-arid environment.

Temperature and Precipitation: A Balancing Act

The interplay between rising temperatures and changes in precipitation patterns at Kalgoorlie-Boulder Airport underscores the complexity of climate dynamics in semi-arid regions. While the warming trend presents challenges, the shift towards more evenly distributed rainfall offers a counterbalance, potentially mitigating some adverse effects of increased temperatures. This delicate balance is essential for maintaining the ecological and economic stability of the region.

Station Statistics

10-Year Trend

High: +1.06 °C/decade

Low: +0.64 °C/decade

Rain: +0.00 mm/decade

25-Year Trend

High: +0.26 °C/decade

Low: +0.27 °C/decade

Rain: +0.07 mm/decade

50-Year Trend

High: +0.20 °C/decade

Low: +0.20 °C/decade

Rain: +0.01 mm/decade

All-Time Trend

High: +0.14 °C/decade

Low: +0.19 °C/decade

Rain: -0.01 mm/decade

Percentage Above-Average Days

Last 12 Months: 54.2%

This Year: 59.3%

Precipitation Concentration Index (PCI) ℹ️

Last 12 Months: 13.0

Historical Average: 16.8

Percentile Rank of Last 12 Months ℹ️

High: 98^th percentile

Low: 98^th percentile

Rain: 72^nd percentile

Change in Variance ℹ️

High: +1.2%

Low: -0.4%

Intraday: -3.3%

Data Coverage

96.7%

First Year of Data

1939

Station Location

Historical Weather Records

	Max High	Avg High	Min High	Max Avg	Avg Avg	Min Avg	Max Low	Avg Low	Min Low	Max Precipitation	Avg Precipitation	Max Snow	Avg Snow
Record	46.5 °C	—	7.2 °C	39.7 °C	—	3.9 °C	30.4 °C	—	-3.4 °C	177.8 mm	—	—	—
January	46.5 °C	33.8 °C	15.9 °C	39.7 °C	26.2 °C	14.2 °C	30.4 °C	18.4 °C	8.8 °C	154.4 mm	0.7 mm	—	—
February	46.5 °C	32.2 °C	15.0 °C	36.0 °C	25.1 °C	14.0 °C	29.8 °C	18.0 °C	8.5 °C	177.8 mm	0.9 mm	—	—
March	44.5 °C	29.5 °C	15.6 °C	34.3 °C	22.8 °C	13.1 °C	27.6 °C	16.2 °C	5.7 °C	74.1 mm	0.7 mm	—	—
April	40.1 °C	25.3 °C	12.8 °C	31.4 °C	19.0 °C	8.9 °C	24.7 °C	12.7 °C	1.7 °C	49.8 mm	0.6 mm	—	—
May	33.4 °C	20.8 °C	10.5 °C	25.4 °C	14.7 °C	6.0 °C	22.8 °C	8.6 °C	-1.8 °C	45.2 mm	0.7 mm	—	—
June	27.6 °C	17.6 °C	8.9 °C	22.1 °C	11.9 °C	4.7 °C	16.3 °C	6.2 °C	-3.0 °C	57.2 mm	0.9 mm	—	—
July	28.7 °C	16.9 °C	7.2 °C	20.3 °C	11.0 °C	3.9 °C	15.8 °C	5.0 °C	-3.4 °C	27.7 mm	0.8 mm	—	—
August	32.0 °C	18.8 °C	8.9 °C	23.6 °C	12.4 °C	4.6 °C	17.4 °C	5.7 °C	-2.4 °C	39.9 mm	0.7 mm	—	—
September	37.9 °C	22.5 °C	10.2 °C	29.2 °C	15.5 °C	6.6 °C	22.8 °C	8.1 °C	-0.6 °C	44.2 mm	0.4 mm	—	—
October	40.9 °C	26.1 °C	11.6 °C	31.7 °C	18.9 °C	7.5 °C	24.1 °C	11.3 °C	-1.0 °C	25.8 mm	0.5 mm	—	—
November	44.7 °C	29.1 °C	13.5 °C	34.8 °C	21.9 °C	8.7 °C	26.6 °C	14.2 °C	3.1 °C	64.5 mm	0.6 mm	—	—
December	45.0 °C	32.2 °C	14.3 °C	36.6 °C	24.6 °C	12.3 °C	29.4 °C	16.7 °C	5.5 °C	24.6 mm	0.4 mm	—	—