Average Weather in Melbourne Australia
In Melbourne, the temperature typically varies from 43°F to 79°F over the course of the year, and is rarely below 36°F or above 94°F.
The warm season lasts for 3.0 months, from December 15 to March 16, with an average daily high temperature above 74°F. The hottest day of the year is February 3, with an average high of 79°F and low of 58°F.
The cool season lasts for 3.5 months, from May 23 to September 7, with an average daily high temperature below 60°F. The coldest day of the year is July 23, with an average low of 43°F and high of 55°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
The length of the day in Melbourne varies significantly over the course of the year. In 2017, the shortest day is June 21, with 9 hours, 32 minutes of daylight; the longest day is December 21, with 14 hours, 47 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:51 AM on December 8, and the latest sunrise is 1 hour, 45 minutes later at 7:36 AM on June 29. The earliest sunset is at 5:07 PM on June 13, and the latest sunset is 3 hours, 38 minutes later at 8:45 PM on January 4.
Daylight saving time (DST) is observed in Melbourne 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
In Melbourne, 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 Melbourne begins around December 17 and lasts for 3.9 months, ending around April 14. On February 8, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 72% of the time, and overcast or mostly cloudy 28% of the time.
The cloudier part of the year begins around April 14 and lasts for 8.1 months, ending around December 17. On June 9, the cloudiest day of the year, the sky is overcast or mostly cloudy 46% of the time, and clear, mostly clear, or partly cloudy 54% 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 Melbourne varies throughout the year.
The wetter season lasts 7.2 months, from April 20 to November 27, with a greater than 23% chance of a given day being a wet day. The chance of a wet day peaks at 34% on September 5.
The drier season lasts 4.8 months, from November 27 to April 20. The smallest chance of a wet day is 12% on February 27.
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 34% on September 5.
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 in the year. Melbourne experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year in Melbourne. The most rain falls during the 31 days centered around November 3, with an average total accumulation of 2.2 inches.
The least rain falls around March 5, with and average total accumulation of 1.2 inches.
Average Monthly Rainfall
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 Melbourne, 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
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 Melbourne experiences mildly seasonal variation over the course of the year.
The windier part of the year lasts for 4.5 months, from June 16 to November 2, with average wind speeds of more than 5.2 miles per hour. The windiest day of the year is August 9, with an average hourly wind speed of 5.7 miles per hour.
The calmer time of year lasts for 7.5 months, from November 2 to June 16. The calmest day of the year is April 23, with an average hourly wind speed of 4.7 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Melbourne varies throughout the year.
The wind is most often from the north for 4.9 months, from April 23 to September 20, with a peak percentage of 47% on July 13. The wind is most often from the west for 3.1 weeks, from September 20 to October 12, with a peak percentage of 36% on September 24. The wind is most often from the south for 6.4 months, from October 12 to April 23, with a peak percentage of 60% on January 29.
Melbourne 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 3.5 months, from December 22 to April 7, with an average temperature above 65°F. The day of the year with the warmest water is February 16, with an average temperature of 68°F.
The time of year with cooler water lasts for 3.5 months, from June 17 to October 2, with an average temperature below 56°F. The day of the year with the coolest water is August 12, with an average temperature of 52°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 very significant seasonal variation over the course of the year.
The brighter period of the year lasts for 3.5 months, from November 6 to February 20, with an average daily incident shortwave energy per square meter above 6.7 kWh. The brightest day of the year is January 4, with an average of 8.0 kWh.
The darker period of the year lasts for 3.7 months, from April 29 to August 19, with an average daily incident shortwave energy per square meter below 3.2 kWh. The darkest day of the year is June 25, with an average of 1.9 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Melbourne are -37.814 deg latitude, 144.963 deg longitude, and 62 ft elevation.
The topography within 2 miles of Melbourne contains only modest variations in elevation, with a maximum elevation change of 328 feet, and an average elevation above sea level of 78 feet. Within 10 miles contains significant variations in elevation (538 feet). Within 50 miles contains extreme variations in elevation (4,298 feet).
The area within 2 miles of Melbourne is covered by artificial surfaces (62%) and sparse vegetation (21%), within 10 miles by artificial surfaces (49%) and sparse vegetation (19%), and within 50 miles by trees (30%) and cropland (30%).
This report illustrates the typical weather in Melbourne, 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 Melbourne.
For each station, the records are corrected for the elevation difference between that station and Melbourne 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 Melbourne is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Melbourne and a given station.
The stations contributing to this reconstruction are: Essendon Airport (50%, 11 kilometers, northwest), Laverton Aerodrome (27%, 20 kilometers, west), and Moorabbin Airport Aws (23%, 22 kilometers, southeast).
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 .