Average Weather in Roxby Downs Australia
In Roxby Downs, the summers are hot and windy, the winters are cool, and it is dry and mostly clear year round. Over the course of the year, the temperature typically varies from 44°F to 95°F and is rarely below 39°F or above 106°F.
Based on the tourism score, the best time of year to visit Roxby Downs for warm-weather activities is from late October to mid April.
The hot season lasts for 3.5 months, from November 26 to March 12, with an average daily high temperature above 88°F. The hottest day of the year is January 12, with an average high of 95°F and low of 71°F.
The cool season lasts for 3.2 months, from May 20 to August 25, with an average daily high temperature below 69°F. The coldest day of the year is July 8, with an average low of 44°F and high of 63°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
Wildwood, Texas, United States (9,420 miles away) and Thomasville, Georgia, United States (10,033 miles) are the far-away foreign places with temperatures most similar to Roxby Downs (view comparison).
In Roxby Downs, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.
The clearer part of the year in Roxby Downs begins around June 30 and lasts for 3.6 months, ending around October 16. On August 10, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 88% of the time, and overcast or mostly cloudy 12% of the time.
The cloudier part of the year begins around October 16 and lasts for 8.4 months, ending around June 30. On November 22, the cloudiest day of the year, the sky is overcast or mostly cloudy 30% of the time, and clear, mostly clear, or partly cloudy 70% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
Roxby Downs does not experience significant seasonal variation in the frequency of wet days (i.e., those with greater than 0.04 inches of liquid or liquid-equivalent precipitation). The frequency ranges from 4% to 9%, with an average value of 6%.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 9% on May 31.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Roxby Downs experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 6.5 months, from November 25 to June 10, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around February 5, with an average total accumulation of 0.7 inches.
The rainless period of the year lasts for 5.5 months, from June 10 to November 25. The least rain falls around July 9, with an average total accumulation of 0.2 inches.
Average Monthly Rainfall
The length of the day in Roxby Downs varies significantly over the course of the year. In 2019, the shortest day is June 22, with 10 hours, 10 minutes of daylight; the longest day is December 22, with 14 hours, 8 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:56 AM on October 5, and the latest sunrise is 1 hour, 39 minutes later at 7:35 AM on April 6. The earliest sunset is at 5:28 PM on June 11, and the latest sunset is 3 hours, 1 minute later at 8:29 PM on January 10.
Daylight saving time (DST) is observed in Roxby Downs during 2019, starting in the spring on October 6 and ending in the fall on April 7.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Roxby Downs, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 2% of 2% throughout.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Roxby Downs experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 6.9 months, from August 18 to March 16, with average wind speeds of more than 10.2 miles per hour. The windiest day of the year is November 27, with an average hourly wind speed of 11.8 miles per hour.
The calmer time of year lasts for 5.1 months, from March 16 to August 18. The calmest day of the year is May 19, with an average hourly wind speed of 8.6 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Roxby Downs varies throughout the year.
The wind is most often from the north for 1.6 months, from June 18 to August 7, with a peak percentage of 32% on July 24. The wind is most often from the south for 10 months, from August 7 to June 18, with a peak percentage of 50% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Roxby Downs throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Roxby Downs for general outdoor tourist activities is from late October to mid April, with a peak score in the third week of March.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Roxby Downs for hot-weather activities is from late December to early March, with a peak score in the second week of January.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
Temperatures in Roxby Downs are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.
Time Spent in Various Temperature Bands and the Growing Season
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.7 months, from October 29 to February 19, with an average daily incident shortwave energy per square meter above 7.5 kWh. The brightest day of the year is January 5, with an average of 8.5 kWh.
The darker period of the year lasts for 3.2 months, from May 3 to August 8, with an average daily incident shortwave energy per square meter below 4.3 kWh. The darkest day of the year is June 16, with an average of 3.2 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Roxby Downs are -30.563 deg latitude, 136.895 deg longitude, and 351 ft elevation.
The topography within 2 miles of Roxby Downs contains only modest variations in elevation, with a maximum elevation change of 108 feet and an average elevation above sea level of 359 feet. Within 10 miles also contains only modest variations in elevation (315 feet). Within 50 miles contains only modest variations in elevation (741 feet).
The area within 2 miles of Roxby Downs is covered by sparse vegetation (80%) and artificial surfaces (19%), within 10 miles by sparse vegetation (83%) and grassland (12%), and within 50 miles by sparse vegetation (77%) and grassland (13%).
This report illustrates the typical weather in Roxby Downs, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There is only a single weather station, RAAF Woomera Airfield, in our network suitable to be used as a proxy for the historical temperature and dew point records of Roxby Downs.
At a distance of 65 kilometers from Roxby Downs, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and Roxby Downs according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
Time zones for aiports and weather stations are provided by AskGeo.com .