The best times to visit Kalgoorlie – Boulder for ideal weather are

February 19th to May 20th


September 24th to December 16th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Kalgoorlie – Boulder Travel Info

Weather in Kalgoorlie – Boulder


Average temperatures in Kalgoorlie – Boulder vary greatly. Considering humidity, temperatures feel nice most of the year, excluding some cold weeks in the winter, with a very low chance of rain or snow throughout the year. The area is more temperate than most — in the 65th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Kalgoorlie – Boulder, the hottest months are January, February, and then December. See average monthly temperatures below. The warmest time of year is generally late December where highs are regularly around 96.3°F (35.7°C) with temperatures rarely dropping below 64.1°F (17.8°C) at night.

Kalgoorlie – Boulder Temperatures (Fahrenheit)


Kalgoorlie – Boulder Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Kalgoorlie – Boulder Perceived Temperature (F)


Kalgoorlie – Boulder Perceived Temperature (C)



Average Kalgoorlie – Boulder Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 93.9 79.8 64.1
Feb 91.3 78.1 63.7
Mar 84.7 72.5 59.5
Apr 79.1 67.3 54.1
May 70.5 59 46.4
Jun 64.4 53.7 41.8
Jul 63.3 52.4 40
Aug 68.3 55.9 42.4
Sep 73.2 60.4 45.5
Oct 82.1 68.5 52.8
Nov 85.8 72.1 56.9
Dec 90.1 76.3 60.5

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 34.4 26.6 17.8
Feb 32.9 25.6 17.6
Mar 29.3 22.5 15.3
Apr 26.2 19.6 12.3
May 21.4 15 8
Jun 18 12.1 5.4
Jul 17.4 11.3 4.4
Aug 20.2 13.3 5.8
Sep 22.9 15.8 7.5
Oct 27.8 20.3 11.6
Nov 29.9 22.3 13.8
Dec 32.3 24.6 15.8



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Kalgoorlie – Boulder are May, December, and then April. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late December. For example, on the week of December 24th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid July with an average of 1 days of significant precipitation the week of July 9th.

When can you find snow in Kalgoorlie – Boulder? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Kalgoorlie – Boulder.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Kalgoorlie – Boulder (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 7% 0 1.5
Feb 9% 0 1.1
Mar 8% 0 1.5
Apr 5% 0 0.5
May 4% 0 0.6
Jun 7% 0 0.7
Jul 8% 0 1.1
Aug 6% 0 0.7
Sep 6% 0 0.6
Oct 6% 0 0.7
Nov 10% 0 0.9
Dec 5% 0 0.6

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 7 0 3.8
Feb 9 0 2.8
Mar 8 0 3.8
Apr 5 0 1.3
May 4 0 1.5
Jun 7 0 1.8
Jul 8 0 2.8
Aug 6 0 1.8
Sep 6 0 1.5
Oct 6 0 1.8
Nov 10 0 2.3
Dec 5 0 1.5


Humidity and Wind

Kalgoorlie – Boulder has some comfortably humid months, and dry months in the opposite season. The least humid month is December (24.7% relative humidity), and the most humid month is June (53.2%).

Wind in Kalgoorlie – Boulder is usually moderate. The windiest month is January, followed by December and February. January’s average wind speed of around 9.5 knots (11 MPH or 17.6 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late November to early December where average top sustained speeds reach 16.7 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Kalgoorlie – Boulder.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 9.5 Gentle breeze 15.6 Significant breeze
Feb 9.2 Gentle breeze 15.2 Significant breeze
Mar 8 Gentle breeze 13.5 Significant breeze
Apr 6.5 Light breeze 11.6 Significant breeze
May 5.7 Light breeze 11 Significant breeze
Jun 6 Light breeze 11.3 Significant breeze
Jul 6.1 Light breeze 11.7 Significant breeze
Aug 6.4 Light breeze 12.4 Significant breeze
Sep 7.7 Gentle breeze 14.3 Significant breeze
Oct 8.5 Gentle breeze 14.8 Significant breeze
Nov 8.9 Gentle breeze 15.6 Significant breeze
Dec 9.3 Gentle breeze 15.6 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 27.9%
Feb 32.6%
Mar 36.6%
Apr 37.9%
May 45.6%
Jun 53.2%
Jul 51.6%
Aug 40.6%
Sep 32.6%
Oct 26.7%
Nov 27%
Dec 24.7%


Is it Safe to Travel to Kalgoorlie – Boulder?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Australia; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Aug 22, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Kalgoorlie – Boulder, WT, Australia is January, followed by December and September. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Kalgoorlie – Boulder in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 67.8 in November means 67.8% of the tourists vs. January.



Overall Kalgoorlie – Boulder Travel Experience by Season

Fall (March through May)

Humidity and temperatures combine to make this season feel warm. Highs range from 87.5°F (30.8°C) and 67.7°F (19.8°C) with colder temperatures in the later months. Rain is rare with 1 to 2 days of significant precipitation per month. Fall is the second busiest for tourism, which makes it a good time for those looking for things to do.

Winter (June through August)

The middle-year months have cold weather with high temperatures that are brisk. These months see moderate precipitation with about 2 days of precipitation per month. June – August is the slowest season for tourism in Kalgoorlie – Boulder, so lodging and other accommodations may cost less than usual.

Spring (September through November)

Spring daily highs range from 87.1°F (30.6°C) and 69.4°F (20.8°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 2 to 3 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

Summer (December through February)

Weather is perfect this time of year in Kalgoorlie – Boulder to be enjoyable for warm weather travelers. The average high during this season is between 96.3°F (35.7°C) and 86°F (30°C). On average, it rains or snows a smalll amount: 1 to 2 times per month. These times of year are the busiest with tourists.


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