December weather forecast
Waterfall, Australia

December

Weather in December

The first month of the summer, December, is also a moderately hot month in Waterfall, Australia, with an average temperature ranging between max 27.4°C (81.3°F) and min 16.5°C (61.7°F).

Temperature

December begins with an average high-temperature of a still moderately hot 27.4°C (81.3°F), reflecting close similarity to the preceding month. Waterfall experiences a mean temperature of 16.5°C (61.7°F) during December nights.

Heat index

The heat index for December is evaluated at 29°C (84.2°F). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.
Note that heat index values are valued for light wind and location in the shade. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

In December, the average relative humidity in Waterfall is 69%.

Rainfall

In Waterfall, in December, it is raining for 12.6 days, with typically 37mm (1.46") of accumulated precipitation. Throughout the year, there are 137.9 rainfall days, and 502mm (19.76") of precipitation is accumulated.

Daylight

The month with the longest days in Waterfall is December, with an average of 14h and 24min of daylight.
On the first day of December, sunrise is at 5:37 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:10 pm AEDT.

Sunshine

In December, the average sunshine is 9.7h.

UV index

The months with the highest UV index are January, February and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 in December interprets into the following advice:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

Frequently asked questions

What is the usual temperature for Waterfall in December?
During December, Waterfall experiences an average high-temperature of 27.4°C (81.3°F) and a low-temperature of 16.5°C (61.7°F). In December, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 29°C (84.2°F).
What is the average humidity in December in Waterfall?
In December, the average relative humidity in Waterfall is 69%.
How much does it rain in Waterfall in December?
In Waterfall, Australia, during December, the rain falls for 12.6 days and regularly aggregates up to 37mm (1.46") of precipitation.
When are the longest days in Waterfall?
December has the longest days of the year in Waterfall, Australia, with an average of 14h and 24min of daylight.
What is the average length of the day in December in Waterfall?
In Waterfall, the average day length in December is 14h and 23min.
When are sunrise and sunset in December in Waterfall?
In December, on the first day of the month, sunrise is at 5:37 am and sunset at 7:52 pm. On the last day of the month, in Waterfall, sunrise is at 5:47 am and sunset at 8:10 pm AEDT.
How many hours of sunshine does Waterfall have in December?
In December, the average sunshine duration is 9.7h.
What are the months with the highest UV index in Waterfall?
January, February and December, with an average maximum UV index of 6, are months with the highest UV index in Waterfall.
How high is the UV index in December in Waterfall?
In December, the average daily maximum UV index in Waterfall is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Waterfall, Australia
Average temperature in December
Waterfall, Australia
  • Average high temperature in December: 27.4°C

The warmest month (with the highest average high temperature) is January (28.7°C).
The months with the lowest average high temperature are June and July (16.3°C).

  • Average low temperature in December: 16.5°C

The month with the highest average low temperature is January (18.3°C).
The coldest month (with the lowest average low temperature) is July (7.6°C).

Average pressure in December - Waterfall, Australia
Average pressure in December
Waterfall, 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 (1012.8mbar).

Average wind speed in December - Waterfall, Australia
Average wind speed in December
Waterfall, Australia
  • Average wind speed in December: 9.7km/h

The windiest months (with the highest average wind speed) are August and September (10.2km/h).
The calmest month (with the lowest average wind speed) is April (8.6km/h).

Average humidity in December - Waterfall, Australia
Average humidity in December
Waterfall, Australia
  • Average humidity in December: 69%

The month with the highest relative humidity is June (77%).
The months with the lowest relative humidity are August and September (67%).

Average rainfall in December - Waterfall, Australia
Average rainfall in December
Waterfall, Australia
  • Average rainfall in December: 37mm

The wettest month (with the highest rainfall) is February (84mm).
The driest month (with the least rainfall) is May (24mm).

Average rainfall days in December - Waterfall, Australia
Average rainfall days in December
Waterfall, Australia
  • Average rainfall days in December: 12.6 days

The month with the highest number of rainy days is January (15.4 days).
The month with the least rainy days is August (7.8 days).

Average daylight in December / Average sunshine in December - Waterfall, Australia
Average daylight in December /
Average sunshine in December
Waterfall, 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 4min

The month with the most sunshine is November (Average sunshine: 9h and 48min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).

Average sunshine days in December - Waterfall, Australia
Average sunshine days in December
Waterfall, Australia
  • Average sunshine days in December: 14.4 days

The month with the most sunshine days is August (21.7 days).
The month with the least sunshine days is February (10.6 days).

Average UV index in December - Waterfall, Australia
Average UV index in December
Waterfall, Australia
  • Average UV index in December: 6

The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are April, May, June, July, August and September (UV index 4).

Average cloud cover in December - Waterfall, Australia
Average cloud cover in December
Waterfall, Australia
  • Average cloud cover in December: 38

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 23).

Average visibility in December - Waterfall, Australia
Average visibility in December
Waterfall, Australia
  • Average visibility in December: 9km

The months with the highest visibility are June and August (10km).
The months with the lowest visibility are January, February, March, April, May, July, September, October, November and December (9km).

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