The best times to visit Perth for ideal weather are
March 12th to May 20th
September 24th to December 23rd
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Perth Travel Guide
Weather in Perth
Average temperatures in Perth vary greatly. Considering humidity, temperatures feel very enjoyable all year with a low chance of precipitation most of the year. The area is somewhat temperate — in the 56th 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 Perth, the hottest months are January, February, and then March. See average monthly temperatures below. The warmest time of year is generally late January where highs are regularly around 92.5°F (33.6°C) with temperatures rarely dropping below 66.3°F (19.1°C) at night.
Perth Temperatures (Fahrenheit)
Perth Temperatures (Celsius)
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.
Perth Perceived Temperature (F)
Perth Perceived Temperature (C)
Average Perth 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.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Perth are February, March, and then January. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid January. For example, on the week of January 8th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late July with an average of 3 days of significant precipitation the week of July 23rd.
When can you find snow in Perth? 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.
The graph below shows the % chance of rainy and snowy days in Perth.
Snow on the Ground
The graph below shows the average snow on the ground in Perth (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Perth has some slightly muggy months, with moderately humid months on the other side of the year. The least humid month is January (41.3% relative humidity), and the most humid month is July (68.1%).
Wind in Perth is usually calm. The windiest month is January, followed by December and February. January’s average wind speed of around 7 knots (8.1 MPH or 13 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 early to mid January where average top sustained speeds reach 11.3 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Perth.
The graph below shows wind speed (max and average) in knots.
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||7||Gentle breeze||10.9||Gentle breeze|
|Feb||6.6||Light breeze||10.2||Gentle breeze|
|Mar||6||Light breeze||9.6||Gentle breeze|
|Apr||4.5||Light breeze||8.4||Gentle breeze|
|May||3.7||Barely noticeable||7.5||Gentle breeze|
|Jun||4.1||Light breeze||7.9||Gentle breeze|
|Jul||4.2||Light breeze||8.1||Gentle breeze|
|Aug||4.3||Light breeze||8.3||Gentle breeze|
|Sep||5.5||Light breeze||9.6||Gentle breeze|
|Oct||5.9||Light breeze||9.9||Gentle breeze|
|Nov||6.5||Light breeze||10.5||Gentle breeze|
|Dec||6.9||Light breeze||10.8||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Perth?
Our best data indicates this area is generally safe. As of Aug 21, 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 14, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Perth, WT, AU 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 Perth 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
Overall Perth Travel Experience by Season
Fall (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 90.3°F (32.4°C) and 69.9°F (21.1°C) with colder temperatures in the later months. Rain is rare with 1 to 6 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 comfortably cool weather with high temperatures that are comfortable. These months see the most precipitation with 9 to 12 days of precipitation per month. June – August is the slowest season for tourism in Perth, so lodging and other accommodations may cost less than usual.
Spring (September through November)
Spring daily highs range from 81.9°F (27.7°C) and 68.9°F (20.5°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 2 to 9 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 Perth to be enjoyable for warm weather travelers. The average high during this season is between 92.5°F (33.6°C) and 80°F (26.7°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.