The best times to visit Karratha for ideal weather are

May 14th to September 23rd

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



Other Karratha Travel Info

Weather in Karratha


Average temperatures in Karratha vary somewhat. Considering humidity, temperatures feel hot for about half of the year and otherwise nice with a very low chance of rain throughout the year. The area is somewhat temperate — in the 52nd 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 Karratha, the hottest months are February, January, and then March. See average monthly temperatures below. The warmest time of year is generally mid January where highs are regularly around 98.2°F (36.8°C) with temperatures rarely dropping below 81.1°F (27.3°C) at night.

Karratha Temperatures (Fahrenheit)


Karratha 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.

Karratha Perceived Temperature (F)


Karratha Perceived Temperature (C)



Average Karratha 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 96.7 87.2 79.9
Feb 97.2 87.7 79.6
Mar 96.4 86.7 78.1
Apr 93.5 82.8 72.2
May 85.7 74.4 63.7
Jun 79.6 68.6 58
Jul 79.3 67.7 56.1
Aug 83.7 70.5 56.9
Sep 88.3 75.3 61.7
Oct 94.9 81.9 69.8
Nov 95.5 83.8 73.6
Dec 96.2 85.7 77.4

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 35.9 30.7 26.6
Feb 36.2 30.9 26.4
Mar 35.8 30.4 25.6
Apr 34.2 28.2 22.3
May 29.8 23.6 17.6
Jun 26.4 20.3 14.4
Jul 26.3 19.8 13.4
Aug 28.7 21.4 13.8
Sep 31.3 24.1 16.5
Oct 34.9 27.7 21
Nov 35.3 28.8 23.1
Dec 35.7 29.8 25.2



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Karratha are August, October, and then November. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid March. For example, on the week of March 19th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late January with an average of 1 days of significant precipitation the week of January 22nd.

When can you find snow in Karratha? 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 Karratha.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Karratha (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 11% 0 3.3
Feb 11% 0 3
Mar 9% 0 1.9
Apr 3% 0 0.3
May 7% 0 1.9
Jun 6% 0 0.9
Jul 3% 0 0.3
Aug 0% 0 0
Sep 1% 0 0.1
Oct 0% 0 0
Nov 0% 0 0.2
Dec 1% 0 0.7

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 11 0 8.4
Feb 11 0 7.6
Mar 9 0 4.8
Apr 3 0 0.8
May 7 0 4.8
Jun 6 0 2.3
Jul 3 0 0.8
Aug 0 0 0
Sep 1 0 0.3
Oct 0 0 0
Nov 0 0 0.5
Dec 1 0 1.8


Humidity and Wind

Karratha has some humid months, and slightly dry months in the opposite season. The least humid month is August (38.8% relative humidity), and the most humid month is January (60.3%).

Wind in Karratha is usually moderate. The windiest month is December, followed by November and January. December’s average wind speed of around 12.6 knots (14.5 MPH or 23.3 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid to late November where average top sustained speeds reach 18.7 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Karratha.

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 12.1 Significant breeze 17 Strong breeze
Feb 11 Significant breeze 16 Significant breeze
Mar 9.9 Gentle breeze 15.2 Strong breeze
Apr 8.7 Gentle breeze 13.8 Significant breeze
May 8.8 Gentle breeze 14.7 Strong breeze
Jun 8.9 Gentle breeze 15.3 Significant breeze
Jul 8.8 Gentle breeze 15 Strong breeze
Aug 8.9 Gentle breeze 15.2 Significant breeze
Sep 10.4 Gentle breeze 16.3 Strong breeze
Oct 11.2 Significant breeze 16.8 Significant breeze
Nov 12.4 Significant breeze 17.8 Strong breeze
Dec 12.6 Significant breeze 17.5 Strong breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 60.3%
Feb 57.5%
Mar 55.5%
Apr 47.7%
May 47.3%
Jun 48.5%
Jul 43.7%
Aug 38.8%
Sep 39.2%
Oct 40.5%
Nov 46.3%
Dec 52.9%


Is it Safe to Travel to Karratha?

Our best data indicates this area is generally safe. As of Dec 04, 2023 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 Nov 30, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in Karratha, 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 Karratha 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 Karratha Travel Experience by Season

Fall (March through May)

Humidity and temperatures combine to make this season feel warm. Highs range from 98.1°F (36.7°C) and 81.5°F (27.5°C) with colder temperatures in the later months. Rain is rare with 1 to 3 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 very comfortable weather with high temperatures that are comfortable. These months see moderate precipitation with 0 to 2 days of precipitation per month. June – August is the slowest season for tourism in Karratha, so lodging and other accommodations may cost less than usual.

Spring (September through November)

Spring daily highs range from 97.2°F (36.2°C) and 86.7°F (30.4°C), which will feel very nice given the humidity and wind. It rains or snows a trivial amount: approximately 0 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 somewhat warm this time of year in Karratha to be enjoyable for warm weather travelers. The average high during this season is between 98.2°F (36.8°C) and 94.4°F (34.7°C). On average, it rains or snows a smalll amount: 0 to 3 times per month. These times of year are the busiest with tourists.


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