The best times to visit Marion Bay for ideal weather are

September 24th to May 27th

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



Other Marion Bay Travel Info

Weather in Marion Bay


Average temperatures in Marion Bay vary somewhat. Considering humidity, temperatures feel nice most of the year, excluding some cold weeks in the winter, with a low chance of precipitation most of the year. The area is more temperate than most — in the 71st 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 Marion Bay, the hottest months are January, February, and then March. See average monthly temperatures below. The warmest time of year is generally early to mid February where highs are regularly around 79.3°F (26.3°C) with temperatures rarely dropping below 63.4°F (17.4°C) at night.

Marion Bay Temperatures (Fahrenheit)


Marion Bay 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.

Marion Bay Perceived Temperature (F)


Marion Bay Perceived Temperature (C)



Average Marion Bay 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 78.5 68.5 61.5
Feb 77.3 68.3 62.2
Mar 74.9 66.3 60.2
Apr 70.4 62.7 56.7
May 66 59.1 53.1
Jun 61 55.4 49.8
Jul 59.8 53.4 47.3
Aug 61.3 54.3 48
Sep 65.1 57 49.6
Oct 69 59.7 52.5
Nov 72.5 63 56.2
Dec 74.6 65.5 58.5

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 25.8 20.3 16.4
Feb 25.2 20.2 16.8
Mar 23.8 19.1 15.7
Apr 21.3 17.1 13.7
May 18.9 15.1 11.7
Jun 16.1 13 9.9
Jul 15.4 11.9 8.5
Aug 16.3 12.4 8.9
Sep 18.4 13.9 9.8
Oct 20.6 15.4 11.4
Nov 22.5 17.2 13.4
Dec 23.7 18.6 14.7



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Marion Bay are February, January, 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 late January. For example, on the week of January 22nd 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 3 days of significant precipitation the week of July 9th.

When can you find snow in Marion Bay? 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 Marion Bay.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 3% 0 0.4
Feb 3% 0 0.5
Mar 7% 0 0.9
Apr 10% 0 1.4
May 17% 0 2
Jun 24% 0 2.6
Jul 29% 0 2.8
Aug 22% 0 2.1
Sep 16% 0 1.6
Oct 6% 0 0.7
Nov 6% 0 0.7
Dec 7% 0 0.8

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 3 0 1
Feb 3 0 1.3
Mar 7 0 2.3
Apr 10 0 3.6
May 17 0 5.1
Jun 24 0 6.6
Jul 29 0 7.1
Aug 22 0 5.3
Sep 16 0 4.1
Oct 6 0 1.8
Nov 6 0 1.8
Dec 7 0 2


Humidity and Wind

Marion Bay has some very humid months, with other comfortably humid months. The least humid month is January (57.6% relative humidity), and the most humid month is July (71.8%).

Wind in Marion Bay is usually stronger than many places. The windiest month is February, followed by January and November. February’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 late January and early February where average top sustained speeds reach 18.1 knots, which is considered a fresh breeze.

Relative Humidity (%)

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

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 12.5 Significant breeze 17.4 Strong breeze
Feb 12.6 Significant breeze 17.2 Strong breeze
Mar 11.2 Significant breeze 15.7 Strong breeze
Apr 10.3 Gentle breeze 14.9 Significant breeze
May 9.9 Gentle breeze 14.4 Strong breeze
Jun 11 Significant breeze 15.4 Significant breeze
Jul 11.1 Significant breeze 15.7 Strong breeze
Aug 11.1 Significant breeze 16.2 Significant breeze
Sep 11.6 Significant breeze 17.1 Strong breeze
Oct 11.5 Significant breeze 16.9 Significant breeze
Nov 11.6 Significant breeze 16.5 Strong breeze
Dec 11.5 Significant breeze 16.3 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 57.6%
Feb 60.4%
Mar 61.9%
Apr 64.8%
May 69.5%
Jun 71.2%
Jul 71.8%
Aug 70.1%
Sep 64.3%
Oct 59.9%
Nov 61.1%
Dec 59.5%


Is it Safe to Travel to Marion Bay?

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 Marion Bay, SA, Australia is February, followed by January and May. 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 Marion Bay 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 somewhat extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 66.7 in November means 66.7% of the tourists vs. February.



Overall Marion Bay Travel Experience by Season

Fall (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 76.9°F (24.9°C) and 63.4°F (17.4°C) with colder temperatures in the later months. Rain is rare with 2 to 5 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 7 to 9 days of precipitation per month. June – August is fairly slow season for tourism in Marion Bay, so lodging and other accommodations may cost slightly less.

Spring (September through November)

Spring daily highs range from 75.1°F (23.9°C) and 63.5°F (17.5°C), which will feel comfortable given the humidity and wind. It rains or snows a normal amount: 2 to 5 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Summer (December through February)

Weather is perfect this time of year in Marion Bay to be enjoyable for warm weather travelers. The average high during this season is between 79.3°F (26.3°C) and 73.2°F (22.9°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.


Best Times to TravelAustralia › Marion Bay, SA, Australia