December weather forecastTwo Rocks, Australia
December
Weather in December
December, the first month of the summer in Two Rocks, is also a moderately hot month, with an average temperature fluctuating between 17.8°C (64°F) and 27°C (80.6°F).Temperature
Stepping into December, Two Rocks records an average high-temperature of a still warm 27°C (80.6°F), almost consistent with November. During December, Two Rocks sees a mean low-temperature of 17.8°C (64°F).Heat index
December's mean heat index is estimated at 28°C (82.4°F). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. 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 extremely significant for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
In Two Rocks, the average relative humidity in December is 57%.Rainfall
The months with the least rainfall are March and December Rain falls for 5.4 days and accumulates 11mm (0.43") of rain.Sea temperature
In Two Rocks, the average seawater temperature in December is 21.1°C (70°F).Note: The majority of people find swimming in 21.1°C (70°F) unenjoyable. As the water temperature decreases from 21°C (69.8°F) to 15°C (59°F), breathing becomes more challenging to control.
Daylight
With an average of 14h and 12min of daylight, December has the longest days of the year.On the first day of the month, sunrise is at 5:05 am and sunset at 7:08 pm. On the last day of December, sunrise is at 5:15 am and sunset at 7:25 pm AWST.
Sunshine
In December, the average sunshine is 11.5h.UV index
The months with the highest UV index are January through March and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 6 transforms into these recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be cautious! Sand and water surfaces make the Sun's UV rays more potent.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Two Rocks, 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
Two Rocks, 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
Two Rocks, 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
Two Rocks, 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
Two Rocks, 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
Two Rocks, 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 sea temperature in December
Two Rocks, Australia
- Average sea temperature in December: 21.1°C
The best month for swimming (with the highest average sea temperature) is March (23.7°C).
The coldest month (with the lowest average sea temperature) is October (19.1°C).
Average daylight in December /
Average sunshine in December
Two Rocks, 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
Two Rocks, 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
Two Rocks, 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
Two Rocks, 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
Two Rocks, 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).
