The best times to visit Southwest for ideal weather are
October 15th to April 1st
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Southwest Travel Guide
Other Southwest Travel Info
Weather in Southwest
Average temperatures in Southwest vary somewhat. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a fair chance of precipitation about half of the year. The area is somewhat temperate — in the 40th 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 Southwest, the hottest months are February, January, and then March. See average monthly temperatures below. The warmest time of year is generally late January where highs are regularly around 88.6°F (31.4°C) with temperatures rarely dropping below 55.9°F (13.3°C) at night.
Southwest Temperatures (Fahrenheit)
Southwest 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.
Southwest Perceived Temperature (F)
Southwest Perceived Temperature (C)
Average Southwest 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 Southwest are January, February, and then March. 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 mid June with an average of 3 days of significant precipitation the week of June 18th.
When can you find snow in Southwest? 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 Southwest.
Snow on the Ground
The graph below shows the average snow on the ground in Southwest (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
Southwest has some extremely humid months, with other moderately humid months on the other side of the year. The least humid month is January (46.3% relative humidity), and the most humid month is July (84.1%).
Wind in Southwest is usually calm. The windiest month is February, followed by January and December. February’s average wind speed of around 5.7 knots (6.5 MPH or 10.5 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early February where average top sustained speeds reach 10 knots, which is considered a gentle breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Southwest.
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||5.6||Light breeze||9.5||Gentle breeze|
|Feb||5.7||Light breeze||9.6||Gentle breeze|
|Mar||4.6||Light breeze||8.8||Gentle breeze|
|Apr||3.3||Barely noticeable||7.5||Gentle breeze|
|May||2.6||Barely noticeable||7||Gentle breeze|
|Jun||3||Barely noticeable||7.3||Gentle breeze|
|Jul||3.1||Barely noticeable||7.5||Gentle breeze|
|Aug||3.2||Barely noticeable||7.7||Gentle breeze|
|Sep||4||Light breeze||8.6||Gentle breeze|
|Oct||4||Light breeze||8.1||Gentle breeze|
|Nov||4.7||Light breeze||9||Gentle breeze|
|Dec||5.1||Light breeze||9.2||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Southwest?
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 Southwest, 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 Southwest 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 Southwest Travel Experience by Season
Fall (March through May)
Humidity and temperatures combine to make this season feel moderate. Highs range from 85.5°F (29.7°C) and 64.5°F (18.1°C) with colder temperatures in the later months. Rain is somewhat common with 2 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 cold weather with high temperatures that are brisk. These months see the most precipitation with 8 to 9 days of precipitation per month. June – August is the slowest season for tourism in Southwest, so lodging and other accommodations may cost less than usual.
Spring (September through November)
Spring daily highs range from 78.2°F (25.7°C) and 63.1°F (17.3°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 4 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 Southwest to be enjoyable for warm weather travelers. The average high during this season is between 88.6°F (31.4°C) and 75°F (23.9°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.