Average Weather in August in Cairns Australia
In Cairns, the month of August is characterized by gradually rising daily high temperatures, with daily highs increasing by 3°F, from 77°F to 80°F over the course of the month, and rarely exceeding 84°F or dropping below 74°F.
Daily low temperatures increase by 2°F, from 63°F to 66°F, rarely falling below 56°F or exceeding 70°F.
For reference, on January 18, the hottest day of the year, temperatures in Cairns typically range from 76°F to 88°F, while on July 30, the coldest day of the year, they range from 63°F to 77°F.
Average High and Low Temperature in August
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. The horizontal axis is the day, 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 August
The month of August in Cairns experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 38% throughout the month.
The clearest day of the month is August 24, with clear, mostly clear, or partly cloudy conditions 63% of the time.
For reference, on January 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 81%, while on September 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 64%.
Cloud Cover in August
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Cairns, the chance of a wet day over the course of August is essentially constant, remaining around 15% throughout.
For reference, the year's highest daily chance of a wet day is 67% on February 18, and its lowest chance is 12% on September 23.
Probability of Precipitation in August
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during August in Cairns is essentially constant, remaining about 1.2 inches throughout, and rarely exceeding 2.9 inches.
Average Monthly Rainfall in August
Over the course of August in Cairns, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 24 minutes, implying an average daily increase of 48 seconds, and weekly increase of 5 minutes, 33 seconds.
The shortest day of the month is August 1, with 11 hours, 22 minutes of daylight and the longest day is August 31, with 11 hours, 46 minutes of daylight.
Hours of Daylight and Twilight in August
The latest sunrise of the month in Cairns is 6:42 AM on August 1 and the earliest sunrise is 18 minutes earlier at 6:24 AM on August 31.
The earliest sunset is 6:04 PM on August 1 and the latest sunset is 6 minutes later at 6:10 PM on August 31.
Daylight saving time is not observed in Cairns during 2017.
For reference, on December 21, the longest day of the year, the Sun rises at 5:40 AM and sets 13 hours, 9 minutes later, at 6:49 PM, while on June 21, the shortest day of the year, it rises at 6:45 AM and sets 11 hours, 7 minutes later, at 5:52 PM.
Sunrise & Sunset with Twilight in August
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 chance that a given day will be muggy in Cairns is rapidly increasing during August, rising from 14% to 26% over the course of the month.
The lowest chance of a muggy day during August is 13% on August 7.
For reference, on February 22, the muggiest day of the year, there are muggy conditions 99% of the time, while on August 7, the least muggy day of the year, there are muggy conditions 13% of the time.
Humidity Comfort Levels in August
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 Cairns is essentially constant during August, remaining within 0.1 miles per hour of 4.4 miles per hour throughout.
For reference, on April 23, the windiest day of the year, the daily average wind speed is 4.7 miles per hour, while on February 8, the calmest day of the year, the daily average wind speed is 3.6 miles per hour.
The highest daily average wind speed during August is 4.6 miles per hour on August 1.
Average Wind Speed in August
Wind Direction in August
Cairns 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 surface water temperature in Cairns is essentially constant during August, remaining within 1°F of 75°F throughout.
Average Water Temperature in August
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 in Cairns is gradually increasing during August, rising by 0.9 kWh, from 5.2 kWh to 6.1 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in August
For the purposes of this report, the geographical coordinates of Cairns are -16.923 deg latitude, 145.766 deg longitude, and 23 ft elevation.
The topography within 2 miles of Cairns is essentially flat, with a maximum elevation change of 79 feet and an average elevation above sea level of 18 feet. Within 10 miles is essentially flat (3,638 feet). Within 50 miles also contains extreme variations in elevation (5,282 feet).
The area within 2 miles of Cairns is covered by artificial surfaces (39%), trees (22%), sparse vegetation (17%), and water (17%), within 10 miles by trees (57%) and water (24%), and within 50 miles by water (50%) and trees (31%).
This report illustrates the typical weather in Cairns year round, 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, Cairns International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Cairns.
At a distance of 4 kilometers from Cairns, 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 Cairns 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.
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.