Average Weather in Adelaide Australia
In Adelaide, the summers are warm and dry, the winters are cold, and it is windy and mostly clear year round. Over the course of the year, the temperature typically varies from 45°F to 83°F and is rarely below 38°F or above 97°F.
The warm season lasts for 3.3 months, from December 6 to March 16, with an average daily high temperature above 78°F. The hottest day of the year is February 12, with an average high of 83°F and low of 63°F.
The cool season lasts for 3.5 months, from May 24 to September 8, with an average daily high temperature below 63°F. The coldest day of the year is July 20, with an average low of 45°F and high of 58°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
In Adelaide, 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 Adelaide begins around December 12 and lasts for 3.8 months, ending around April 7. On February 9, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 76% of the time, and overcast or mostly cloudy 24% of the time.
The cloudier part of the year begins around April 7 and lasts for 8.2 months, ending around December 12. On May 31, the cloudiest day of the year, the sky is overcast or mostly cloudy 42% of the time, and clear, mostly clear, or partly cloudy 58% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Adelaide varies throughout the year.
The wetter season lasts 4.8 months, from May 4 to September 28, with a greater than 18% chance of a given day being a wet day. The chance of a wet day peaks at 31% on July 2.
The drier season lasts 7.2 months, from September 28 to May 4. The smallest chance of a wet day is 5% on February 11.
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 31% on July 2.
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. Adelaide experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 11 months, from January 23 to January 3, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 23, with an average total accumulation of 2.1 inches.
The rainless period of the year lasts for 2.9 weeks, from January 3 to January 23. The least rain falls around January 15, with and average total accumulation of 0.5 inches.
Average Monthly Rainfall
The length of the day in Adelaide varies significantly over the course of the year. In 2017, the shortest day is June 21, with 9 hours, 48 minutes of daylight; the longest day is December 21, with 14 hours, 31 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:54 AM on September 30, and the latest sunrise is 1 hour, 34 minutes later at 7:28 AM on April 1. The earliest sunset is at 5:10 PM on June 13, and the latest sunset is 3 hours, 23 minutes later at 8:33 PM on January 6.
Daylight saving time (DST) is observed in Adelaide during 2017, starting in the spring on October 1 and ending in the fall on April 2.
Sunrise & Sunset with Twilight and Daylight Saving Time
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 Adelaide, 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 1% of 1% throughout.
Humidity Comfort Levels
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 Adelaide experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.2 months, from November 9 to March 16, with average wind speeds of more than 5.7 miles per hour. The windiest day of the year is January 17, with an average hourly wind speed of 6.4 miles per hour.
The calmer time of year lasts for 7.8 months, from March 16 to November 9. The calmest day of the year is May 19, with an average hourly wind speed of 5.1 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Adelaide varies throughout the year.
The wind is most often from the north for 2.4 months, from May 8 to July 19, with a peak percentage of 37% on July 12. The wind is most often from the west for 2.8 months, from July 19 to October 13, with a peak percentage of 41% on August 10. The wind is most often from the south for 6.8 months, from October 13 to May 8, with a peak percentage of 53% on January 1.
Adelaide is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.4 months, from December 24 to April 7, with an average temperature above 67°F. The day of the year with the warmest water is February 13, with an average temperature of 70°F.
The time of year with cooler water lasts for 3.5 months, from June 20 to October 3, with an average temperature below 59°F. The day of the year with the coolest water is August 10, with an average temperature of 55°F.
Average Water Temperature
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 3.6 months, from November 4 to February 20, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest day of the year is January 4, with an average of 8.3 kWh.
The darker period of the year lasts for 3.6 months, from April 30 to August 18, with an average daily incident shortwave energy per square meter below 3.5 kWh. The darkest day of the year is June 23, with an average of 2.3 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Adelaide are -34.929 deg latitude, 138.599 deg longitude, and 151 ft elevation.
The topography within 2 miles of Adelaide contains only modest variations in elevation, with a maximum elevation change of 259 feet and an average elevation above sea level of 145 feet. Within 10 miles contains only modest variations in elevation (2,444 feet). Within 50 miles also contains large variations in elevation (2,444 feet).
The area within 2 miles of Adelaide is covered by artificial surfaces (64%) and sparse vegetation (17%), within 10 miles by artificial surfaces (38%) and trees (28%), and within 50 miles by cropland (40%) and water (37%).
This report illustrates the typical weather in Adelaide, 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 are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Adelaide.
For each station, the records are corrected for the elevation difference between that station and Adelaide according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Adelaide is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Adelaide and a given station.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.