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Climate and Average Weather Year Round 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.

Climate in Roxby Downs

hotwarmcoolcomfortablewarmhotJanFebMarAprMayJunJulAugSepOctNovDecNowNow88%88%70%70%clearprecipitation: 0.7 inprecipitation: 0.7 in0.2 in0.2 inmuggy: 4%muggy: 4%0%0%drydrytourism score: 7.9tourism score: 7.91.81.8
Roxby Downs weather by month. Click on each chart for more information.

The hot season lasts for 3.5 months, from November 25 to March 11, with an average daily high temperature above 88°F. The hottest month of the year in Roxby Downs is January, with an average high of 95°F and low of 71°F.

The cool season lasts for 3.2 months, from May 19 to August 24, with an average daily high temperature below 69°F. The coldest month of the year in Roxby Downs is July, with an average low of 45°F and high of 63°F.

Average High and Low Temperature in Roxby Downs

Average High and Low Temperature in Roxby DownshothotcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°F110°F110°FJul 763°FJul 763°FJan 1295°FJan 1295°F44°F44°F71°F71°FNov 2588°FNov 2588°FMar 1188°FMar 1188°FMay 1969°FMay 1969°FAug 2469°FAug 2469°F65°F65°F67°F67°F51°F51°F48°F48°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 95°F93°F87°F78°F70°F63°F63°F67°F74°F81°F87°F91°F
Temp. 83°F82°F76°F68°F60°F54°F53°F57°F63°F69°F76°F80°F
Low 71°F70°F65°F58°F51°F46°F45°F47°F52°F58°F64°F68°F

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 in Roxby Downs

Average Hourly Temperature in Roxby DownsJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowcoldcoldcoolcomfortablecomfortablewarmwarmwarmhothotwarm
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

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).

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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 29 and lasts for 3.6 months, ending around October 15.

The clearest month of the year in Roxby Downs is August, during which on average the sky is clear, mostly clear, or partly cloudy 87% of the time.

The cloudier part of the year begins around October 15 and lasts for 8.4 months, ending around June 29.

The cloudiest month of the year in Roxby Downs is November, during which on average the sky is overcast or mostly cloudy 30% of the time.

Cloud Cover Categories in Roxby Downs

Cloud Cover Categories in Roxby DownsclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 988%Aug 988%Nov 2170%Nov 2170%Jun 2978%Jun 2978%Oct 1579%Oct 1579%NowNowclearovercastmostly clearpartly cloudymostly cloudy
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 23%24%25%28%27%25%17%13%14%22%30%27%
Clearer 77%76%75%72%73%75%83%87%86%78%70%73%

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. The month with the most days of rain alone in Roxby Downs is May, with an average of 2.1 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 9% on May 30.

Daily Chance of Precipitation in Roxby Downs

Daily Chance of Precipitation in Roxby DownsJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%May 309%May 309%Mar 304%Mar 304%Feb 46%Feb 46%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 1.9d1.6d1.5d1.2d2.1d1.9d1.6d1.7d1.8d1.9d2.0d1.9d

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 24 to June 9, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Roxby Downs is February, with an average rainfall of 0.7 inches.

The rainless period of the year lasts for 5.5 months, from June 9 to November 24. The month with the least rain in Roxby Downs is July, with an average rainfall of 0.3 inches.

Average Monthly Rainfall in Roxby Downs

Average Monthly Rainfall in Roxby DownsrainrainJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 inFeb 50.7 inFeb 50.7 inJul 80.2 inJul 80.2 inMay 300.6 inMay 300.6 inDec 40.5 inDec 40.5 inOct 50.4 inOct 50.4 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 0.6″0.7″0.6″0.4″0.5″0.4″0.3″0.3″0.4″0.4″0.5″0.5″

The length of the day in Roxby Downs varies significantly over the course of the year. In 2024, the shortest day is June 21, with 10 hours, 10 minutes of daylight; the longest day is December 21, with 14 hours, 8 minutes of daylight.

Hours of Daylight and Twilight in Roxby Downs

Hours of Daylight and Twilight in Roxby DownsJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minSep 2212 hr, 7 minSep 2214 hr, 8 minDec 2114 hr, 8 minDec 2112 hr, 8 minMar 2012 hr, 8 minMar 2010 hr, 10 minJun 2110 hr, 10 minJun 21daydaynightNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 13.9h13.2h12.3h11.3h10.6h10.2h10.4h11.0h11.9h12.8h13.7h14.1h

The earliest sunrise is at 5:55 AM on October 5, and the latest sunrise is 1 hour, 41 minutes later at 7:36 AM on April 6. The earliest sunset is at 5:28 PM on June 10, 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 2024, starting in the spring on October 6 and ending in the fall on April 7.

Sunrise & Sunset with Twilight and Daylight Saving Time in Roxby Downs

Sunrise & Sunset with Twilight and Daylight Saving Time in Roxby DownsJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMOct 55:55 AMOct 55:55 AM8:29 PMJan 108:29 PMJan 10Jun 105:28 PMJun 105:28 PM7:36 AMApr 67:36 AMApr 6DSTApr 7DSTApr 7Oct 6DSTOct 6DSTdaynightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in Roxby Downs

Solar Elevation and Azimuth in Roxby DownsJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM00001010202020203030303040505050606070800000101010102020303030304040404050606070708036NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases in Roxby Downs

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

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 in Roxby Downs

Humidity Comfort Levels in Roxby DownsJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%May 290%May 290%Jan 244%Jan 244%NowNowdrydryhumidhumid
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 1.0d1.0d0.6d0.2d0.0d0.0d0.0d0.0d0.0d0.0d0.3d0.6d

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

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 17 to March 15, with average wind speeds of more than 10.2 miles per hour. The windiest month of the year in Roxby Downs is October, with an average hourly wind speed of 11.7 miles per hour.

The calmer time of year lasts for 5.1 months, from March 15 to August 17. The calmest month of the year in Roxby Downs is May, with an average hourly wind speed of 8.6 miles per hour.

Average Wind Speed in Roxby Downs

Average Wind Speed in Roxby DownswindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mphNov 2611.8 mphNov 2611.8 mphMay 188.6 mphMay 188.6 mphAug 1710.2 mphAug 1710.2 mphMar 1510.2 mphMar 1510.2 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 11.611.010.29.08.68.89.310.211.311.711.711.7

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 17 to August 6, with a peak percentage of 32% on July 23. The wind is most often from the south for 10 months, from August 6 to June 17, with a peak percentage of 50% on January 1.

Wind Direction in Roxby Downs

Wind Direction in Roxby DownsSNSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

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 second week of March.

Tourism Score in Roxby Downs

Tourism Score in Roxby Downsbest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.97.91.81.87.27.2NowNow cloudscloudsprecipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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 mid December to early March, with a peak score in the second week of January.

Beach/Pool Score in Roxby Downs

Beach/Pool Score in Roxby Downsbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.86.80.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

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 in Roxby Downs

Time Spent in Various Temperature Bands and the Growing Season in Roxby DownsJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 1100%Jan 1100%Jul 2100%Jul 2NowNowvery coldcoldcoolcomfortablewarmhotsweltering
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Growing Degree Days in Roxby Downs

Growing Degree Days in Roxby DownsJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°F6,000°F6,000°FJul 2090°FJul 2090°FOct 6900°FOct 6900°FNov 181,800°FNov 181,800°FJun 306,520°FJun 306,520°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

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 28 to February 19, with an average daily incident shortwave energy per square meter above 7.5 kWh. The brightest month of the year in Roxby Downs is December, with an average of 8.4 kWh.

The darker period of the year lasts for 3.2 months, from May 2 to August 7, with an average daily incident shortwave energy per square meter below 4.3 kWh. The darkest month of the year in Roxby Downs is June, with an average of 3.3 kWh.

Average Daily Incident Shortwave Solar Energy in Roxby Downs

Average Daily Incident Shortwave Solar Energy in Roxby DownsbrightbrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh10 kWh10 kWhJan 58.5 kWhJan 58.5 kWhJun 153.2 kWhJun 153.2 kWhOct 287.5 kWhOct 287.5 kWhMay 24.3 kWhMay 24.3 kWhAug 74.3 kWhAug 74.3 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 8.37.66.45.03.83.33.64.66.07.17.98.4

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.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.