December weather forecastYanchep, Australia
December
Weather in December
The first month of the summer, December, is also a moderately hot month in Yanchep, Australia, with an average temperature ranging between max 27°C (80.6°F) and min 17.8°C (64°F).Temperature
Yanchep starts December with an average high-temperature of a still moderately hot 27°C (80.6°F), a minor shift from November's 24.5°C (76.1°F). An average temperature of 17.8°C (64°F) is recorded in Yanchep during the nights in December.Heat index
The heat index value during December is evaluated at 28°C (82.4°F). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.Consider that heat index readings are for situations in the shade and light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Humidity
In Yanchep, the average relative humidity in December is 57%.Rainfall
March and December are months with the least rain 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 5:05 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 7:25 pm AWST.
Sunshine
The average sunshine in December 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. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum UV index of 6 in December translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Yanchep, 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
Yanchep, 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
Yanchep, 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
Yanchep, 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
Yanchep, 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
Yanchep, 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
Yanchep, 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
Yanchep, 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
Yanchep, 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
Yanchep, 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
Yanchep, 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).
