Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Oatley starts December with an average high-temperature of a still moderately hot 27.7°C (81.9°F), a minor shift from November's 26.2°C (79.2°F). In the month of December, Oatley experiences an average low-temperature of 17.1°C (62.8°F).Heat index
For December, the heat index is computed to be a tropical 30°C (86°F). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.Understand that the heat index values take into account shaded locations and mild winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are extremely vital to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
In December, the average relative humidity in Oatley, Australia, is 68%.Rainfall
In Oatley, in December, during 12.5 rainfall days, 33mm (1.3") of precipitation is typically accumulated. Throughout the year, in Oatley, there are 138.7 rainfall days, and 508mm (20") of precipitation is accumulated.Sea temperature
In Oatley, the average seawater temperature in December is 21.9°C (71.4°F).Note: Most people do not take pleasure in swimming in water at 21.9°C (71.4°F). The difficulty of managing breathing increases as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
The month with the longest days is December, with an average of 14h and 24min of daylight.On the first day of the month, sunrise is at 5:37 am and sunset at 7:52 pm. On the last day of December, in Oatley, Australia, sunrise is at 5:47 am and sunset at 8:10 pm AEDT.
Sunshine
The average sunshine in December in Oatley is 9.3h.UV index
The months with the highest UV index in Oatley are January, February, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 6 in December leads to these guidelines:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Take note! Sand and water reflections strengthen the Sun's UV exposure.
Frequently asked questions
What are the temperatures in Oatley in December?
What is the average humidity in December in Oatley?
How many days does it rain in December in Oatley?
What is the sea water temperature in December in Oatley?
When are the longest days in Oatley?
How many hours of daylight does Oatley have in December?
When are sunrise and sunset in December in Oatley?
How long on average sun shines in December in Oatley?
What is the month with the highest UV index in Oatley?
How high is the UV index in December in Oatley?
Average temperature in December
Oatley, Australia
- Average high temperature in December: 27.7°C
The warmest month (with the highest average high temperature) is January (29.3°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°C).
Average pressure in December
Oatley, 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
Oatley, Australia
- Average wind speed in December: 10.2km/h
The windiest months (with the highest average wind speed) are January, September and December (10.2km/h).
The calmest month (with the lowest average wind speed) is April (8.8km/h).
Average humidity in December
Oatley, 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
Oatley, Australia
- Average rainfall in December: 33mm
The wettest month (with the highest rainfall) is February (83mm).
The driest months (with the least rainfall) are May and September (26mm).
Average rainfall days in December
Oatley, Australia
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is February (15.8 days).
The month with the least rainy days is August (7.3 days).
Average sea temperature in December
Oatley, Australia
- Average sea temperature in December: 21.9°C
The best month for swimming (with the highest average sea temperature) is February (23.7°C).
The coldest month (with the lowest average sea temperature) is September (18.6°C).
Average daylight in December /
Average sunshine in December
Oatley, Australia
- Average daylight in December: 14h and 2min
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 2min
The month with the most sunshine is November (Average sunshine: 9h and 24min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).
Average sunshine days in December
Oatley, Australia
- Average sunshine days in December: 15.8 days
The month with the most sunshine days is August (22.7 days).
The month with the least sunshine days is February (10.6 days).
Average UV index in December
Oatley, 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
Oatley, Australia
- Average cloud cover in December: 41
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
Oatley, 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).
Oatley, Australia
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