December weather forecastWanneroo, Australia
December
Weather in December
The first month of the summer, December, is also a moderately hot month in Wanneroo, Australia, with an average temperature ranging between min 17.8°C (64°F) and max 27°C (80.6°F).Temperature
In December, Wanneroo experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 24.5°C (76.1°F) in November to a still warm 27°C (80.6°F). In December, Wanneroo records an average nighttime temperature of 17.8°C (64°F).Heat index
For most parts of December, the heat index is computed to be 28°C (82.4°F). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.It is emphasized that the heat index's values are meant for shaded zones with mild winds. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Humidity
In December, the average relative humidity is 57%.Rainfall
March and December are months with the least rain in Wanneroo when the rain falls for 5.4 days and typically aggregates up to 11mm (0.43") of rain.Daylight
With an average of 14h and 12min of daylight, December has the longest days of the year.On the first day of December, sunrise is at 5:03 am and sunset at 7:07 pm. On the last day of the month, sunrise is at 5:14 am and sunset at 7:25 pm AWST.
Sunshine
In December, the average sunshine is 11.5h.UV index
January through March and December, with an average maximum UV index of 6, are months with the highest UV index in Wanneroo. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 6 during December translates into the following directions:
Resist overexposure. Safeguarding from solar damage is indispensable. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Wanneroo, Australia
- Average high temperature in December: 27°C
The warmest months (with the highest average high temperature) are January and February (28.8°C).
The month with the lowest average high temperature is July (17.2°C).
- Average low temperature in December: 17.8°C
The month with the highest average low temperature is February (19.8°C).
The coldest months (with the lowest average low temperature) are August and September (11.2°C).
Average pressure in December
Wanneroo, Australia
- Average pressure in December: 1012.4mbar
The month with the highest atmospheric pressure is July (1020.6mbar).
The month with the lowest atmospheric pressure is January (1011.2mbar).
Average wind speed in December
Wanneroo, Australia
- Average wind speed in December: 17.1km/h
The windiest month (with the highest average wind speed) is January (17.3km/h).
The calmest month (with the lowest average wind speed) is April (14.1km/h).
Average humidity in December
Wanneroo, Australia
- Average humidity in December: 57%
The months with the highest relative humidity are July and August (73%).
The month with the lowest relative humidity is January (56%).
Average rainfall in December
Wanneroo, Australia
- Average rainfall in December: 11mm
The wettest month (with the highest rainfall) is June (69mm).
The driest months (with the least rainfall) are March and December (11mm).
Average rainfall days in December
Wanneroo, Australia
- Average rainfall days in December: 5.4 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (5.2 days).
Average daylight in December /
Average sunshine in December
Wanneroo, Australia
- Average daylight in December: 14h and 12min
The month with the longest days is December (Average daylight: 14h and 12min).
The month with the shortest days is June (Average daylight: 10h and 6min).
- Average sunshine in December: 11h and 30min
The month with the most sunshine is January (Average sunshine: 11h and 36min).
The month with the least sunshine is July (Average sunshine: 5h and 54min).
Average sunshine days in December
Wanneroo, Australia
- Average sunshine days in December: 23.9 days
The month with the most sunshine days is December (23.9 days).
The month with the least sunshine days is July (13.4 days).
Average UV index in December
Wanneroo, Australia
- Average UV index in December: 6
The months with the highest UV index are January, February, March and December (UV index 6).
The months with the lowest UV index are June, July and August (UV index 4).
Average cloud cover in December
Wanneroo, Australia
- Average cloud cover in December: 14
The month with the most cloud cover is July (Cloud cover 37).
The month with the least cloud cover is January (Cloud cover 13).
Average visibility in December
Wanneroo, Australia
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
