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Average Weather in October in Cairns Australia

In Cairns, the month of October is characterized by gradually rising daily high temperatures, with daily highs increasing by 2°F, from 83°F to 85°F over the course of the month, and rarely exceeding 88°F or dropping below 80°F.

Daily low temperatures increase by 4°F, from 68°F to 72°F, rarely falling below 63°F or exceeding 75°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 October

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.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. 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 October

Average Hourly Temperature in October in Cairns12 AM4 AM8 AM12 PM4 PM8 PM12 AM181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131SepNovcomfortablewarmhot
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Clouds

The month of October in Cairns experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 40% throughout the month.

The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 61% 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 October

The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

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 October is rapidly increasing, starting the month at 13% and ending it at 19%.

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 October

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).

Rainfall

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 October in Cairns is rapidly increasing, starting the month at 1.3 inches, when it rarely exceeds 2.9 inches, and ending the month at 2.5 inches, when it rarely exceeds 6.7 inches or falls below 0.1 inches.

Average Monthly Rainfall in October

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 liquid-equivalent snowfall.

Sun

Over the course of October 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 28 minutes, implying an average daily increase of 55 seconds, and weekly increase of 6 minutes, 27 seconds.

The shortest day of the month is October 1, with 12 hours, 15 minutes of daylight and the longest day is October 31, with 12 hours, 42 minutes of daylight.

Hours of Daylight and Twilight in October

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.

The latest sunrise of the month in Cairns is 5:59 AM on October 1 and the earliest sunrise is 20 minutes earlier at 5:39 AM on October 31.

The earliest sunset is 6:14 PM on October 1 and the latest sunset is 8 minutes later at 6:21 PM on October 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 October

The solar day over the course of October. 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.

Humidity

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 very rapidly increasing during October, rising from 43% to 76% over the course of the month.

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 October

Humidity Comfort Levels in October in Cairns0%10%20%30%40%50%60%70%80%90%100%181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131SepNovOct 143%Oct 143%Oct 3176%Oct 3176%Oct 1155%Oct 1155%Oct 2166%Oct 2166%miserablemiserableoppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortabledrydry
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 October, remaining within 0.1 miles per hour of 4.2 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.

Average Wind Speed in October

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
The hourly average wind direction in Cairns throughout October is predominantly from the east, with a peak proportion of 86% on October 3.

Wind Direction in October

The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

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 gradually increasing during October, rising by 2°F, from 78°F to 80°F, over the course of the month.

Average Water Temperature in October

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 essentially constant during October, remaining within 0.2 kWh of 7.2 kWh throughout.

Average Daily Incident Shortwave Solar Energy in October

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

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%).

Data Sources

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.

Other Data

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.