December weather forecast
Nightcliff, Australia

The first month of the summer, December, is still a hot month in Nightcliff, Australia, with an average temperature varying between 32.5°C (90.5°F) and 27.8°C (82°F).

Temperature

The arrival of December records an average high-temperature of a still tropical 32.5°C (90.5°F), closely related to the 33.3°C (91.9°F) observed in November. During the nights of December, Nightcliff maintains an almost steady temperature with an average low of 27.8°C (82°F).

Heat index

December's average heat index is computed to be a blistering 43°C (109.4°F). Mind: Heat cramps along with heat exhaustion are anticipated. Heatstroke can develop with continued physical activity.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In Nightcliff, Australia, the average relative humidity in December is 72%.

Rainfall

In Nightcliff, Australia, during December, the rain falls for 27.7 days and regularly aggregates up to 204mm (8.03") of precipitation. In Nightcliff, during the entire year, the rain falls for 191.8 days and collects up to 1282mm (50.47") of precipitation.

Sea temperature

December is the month with the warmest seawater, with an average sea temperature of 31.5°C (88.7°F).
Note: One could argue that swimming in waters above 30°C (86°F) lacks the desired refreshing touch.

Daylight

December has the longest days of the year in Nightcliff, with an average of 12h and 48min of daylight.
On the first day of December, sunrise is at 6:11 am and sunset at 6:59 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:14 pm ACST.

Sunshine

The average sunshine in December in Nightcliff is 8.4h.

UV index

January through October and December, with an average maximum UV index of 7, are months with the lowest UV index in Nightcliff. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 7 in December interprets into the following advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.