December weather forecastWestmead, Australia
December
Weather in December
December, the first month of the summer in Westmead, is also a moderately hot month, with temperature in the range of an average high of 27.7°C (81.9°F) and an average low of 17.1°C (62.8°F).Temperature
As December unfolds, the average high-temperature reaches a still moderately hot 27.7°C (81.9°F), hinting at a slight fluctuation from the previous month. Nightly temperatures drop to an average low of 17.1°C (62.8°F) in December.Heat index
For most parts of December, the heat index is calculated to be a tropical 30°C (86°F). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.Heat index guidelines indicate values are for light wind scenarios and shaded regions. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
In December, the average relative humidity in Westmead is 68%.Rainfall
In Westmead, during December, the rain falls for 14 days and regularly aggregates up to 36mm (1.42") of precipitation. In Westmead, during the entire year, the rain falls for 149.1 days and collects up to 546mm (21.5") of precipitation.Daylight
With an average of 14h and 24min of daylight, December has the longest days of the year.On the first day of the month, sunrise is at 5:38 am and sunset at 7:52 pm. On the last day of December, in Westmead, sunrise is at 5:48 am and sunset at 8:10 pm AEDT.
Sunshine
November and December, with an average of 9.4h of sunshine, are months with the most sunshine.UV index
The months with the highest UV index are January, February, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 6 during December leads to these instructions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Westmead, Australia
- Average high temperature in December: 27.7°C
The warmest month (with the highest average high temperature) is January (29.2°C).
The month with the lowest average high temperature is June (16.8°C).
- Average low temperature in December: 17.1°C
The month with the highest average low temperature is January (18.8°C).
The coldest month (with the lowest average low temperature) is July (8.1°C).
Average pressure in December
Westmead, Australia
- Average pressure in December: 1013.3mbar
The month with the highest atmospheric pressure is June (1021mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).
Average wind speed in December
Westmead, Australia
- Average wind speed in December: 10.2km/h
The windiest month (with the highest average wind speed) is December (10.2km/h).
The calmest month (with the lowest average wind speed) is April (8.8km/h).
Average humidity in December
Westmead, Australia
- Average humidity in December: 68%
The month with the highest relative humidity is June (76%).
The month with the lowest relative humidity is September (65%).
Average rainfall in December
Westmead, Australia
- Average rainfall in December: 36mm
The wettest month (with the highest rainfall) is February (87mm).
The driest month (with the least rainfall) is May (27mm).
Average rainfall days in December
Westmead, Australia
- Average rainfall days in December: 14 days
The month with the highest number of rainy days is March (17.6 days).
The month with the least rainy days is August (7.9 days).
Average daylight in December /
Average sunshine in December
Westmead, Australia
- Average daylight in December: 14h and 24min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).
- Average sunshine in December: 9h and 24min
The months with the most sunshine are November and December (Average sunshine: 9h and 24min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).
Average sunshine days in December
Westmead, Australia
- Average sunshine days in December: 14.2 days
The month with the most sunshine days is August (21 days).
The month with the least sunshine days is February (10.4 days).
Average UV index in December
Westmead, Australia
- Average UV index in December: 6
The months with the highest UV index are January, February, November and December (UV index 6).
The months with the lowest UV index are May, June, July, August and September (UV index 4).
Average cloud cover in December
Westmead, Australia
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in December
Westmead, Australia
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
