December weather forecast
Darwin, Australia

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Weather in December

Signifying the arrival of the wet season in full swing, rainfall in December spikes to 204mm (8.03"). An increase in relative humidity to 72% endorses the excessively moist conditions typical of Darwin's weather at year-end. Despite the cloudy sky and intermittent showers, the city retains a fair amount of warmth characteristic of a tropical city. Leisure seekers and nature enthusiasts find the lush, rain-soaked landscape of Darwin in December appealing. As the year draws to a close, Darwin bids adieu with a refreshing, rainy month filled with scenic beauty.

Temperature

December's onset in Darwin records a minor alteration in the average high-temperature to a still hot 32.5°C (90.5°F) from November's 33.3°C (91.9°F). The nights of December anticipate a slight dip from daytime high temperatures, settling to an average low-temperature of 27.8°C (82°F).

Heat index

The heat index for December is appraised at a blistering 43°C (109.4°F). Stay on guard: Heat exhaustion and heat cramps are predicted. Ongoing effort can cause heatstroke.
Note that heat index values are valued for light wind and location in the shade. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. 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 highly critical to babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

The average relative humidity in December is 72%.

Rainfall

In Darwin, in December, during 27.7 rainfall days, 204mm (8.03") of precipitation is typically accumulated. In Darwin, 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 in Darwin, with an average sea temperature of 31.5°C (88.7°F).
Note: One might not get the desired cooling sensation in waters that have temperatures higher than 30°C (86°F).

Daylight

With an average of 12h and 48min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 6:11 am and sunset at 6:59 pm. On the last day of December, sunrise is at 6:24 am and sunset at 7:15 pm ACST.

Sunshine

The average sunshine in December is 8.4h.

UV index

The months with the lowest UV index are January through October and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum UV index of 7 in December translates into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Heads up! UV intensity is amplified by reflections from water and sand.
Updated: Jan 26, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How hot does it get in Darwin in December?

In December, the average high-temperature and low-temperature in Darwin, Australia, are 32.5°C (90.5°F) and 27.8°C (82°F) respectively. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in December is appraised at 43°C (109.4°F).

What is the average humidity in December in Darwin?

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

How much does it rain in Darwin in December?

In Darwin, Australia, in December, during 27.7 rainfall days, 204mm (8.03") of precipitation is typically accumulated.

When is the sea warmest in Darwin?

The month with the warmest seawater in Darwin is December, with an average sea temperature of 31.5°C (88.7°F).

How warm is the water in December in Darwin?

In Darwin, the average seawater temperature in December is 31.5°C (88.7°F). For swimming, other intense water activities, temperature above 30°C (86°F) is arguably unpleasant, as the water cooling effect is missing.

When are the longest days in Darwin?

December has the longest days of the year, with an average of 12h and 48min of daylight.

What is the average length of the day in December in Darwin?

The average day length in December in Darwin is 12h and 51min.

When are sunrise and sunset in December in Darwin?

On the first day of December in Darwin, 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 7:15 pm ACST.

How many hours of sunshine does Darwin have in December?

The average sunshine duration in December in Darwin is 8.4h.

What is the month with the lowest UV index in Darwin?

The months with the lowest UV index in Darwin, Australia, are January through October and December, with an average maximum UV index of 7.

What is the UV index intensity in December in Darwin?

In December, the average daily maximum UV index in Darwin is 7. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.

Average temperature in December
Darwin, Australia

Average temperature in December - Darwin, Australia
  • Average high temperature in December: 32.5°C

The warmest month (with the highest average high temperature) is November (33.3°C).
The month with the lowest average high temperature is July (29.4°C).

  • Average low temperature in December: 27.8°C

The month with the highest average low temperature is December (27.8°C).
The coldest month (with the lowest average low temperature) is July (21.7°C).

Average pressure in December
Darwin, Australia

Average pressure in December - Darwin, Australia
  • Average pressure in December: 1007mbar

The months with the highest atmospheric pressure are July and August (1013.2mbar).
The month with the lowest atmospheric pressure is January (1006.3mbar).

Average wind speed in December
Darwin, Australia

Average wind speed in December - Darwin, Australia
  • Average wind speed in December: 11.3km/h

The windiest month (with the highest average wind speed) is January (15.3km/h).
The calmest month (with the lowest average wind speed) is September (9.9km/h).

Average humidity in December
Darwin, Australia

Average humidity in December - Darwin, Australia
  • Average humidity in December: 72%

The months with the highest relative humidity are January and February (78%).
The month with the lowest relative humidity is June (57%).

Average rainfall in December
Darwin, Australia

Average rainfall in December - Darwin, Australia
  • Average rainfall in December: 204mm

The wettest month (with the highest rainfall) is January (340mm).
The driest months (with the least rainfall) are June, July and August (2mm).

Average rainfall days in December
Darwin, Australia

Average rainfall days in December - Darwin, Australia
  • Average rainfall days in December: 27.7 days

The month with the highest number of rainy days is January (28.3 days).
The month with the least rainy days is June (1.9 days).

Average sea temperature in December
Darwin, Australia

Average sea temperature in December - Darwin, Australia
  • Average sea temperature in December: 31.5°C

The best month for swimming (with the highest average sea temperature) is December (31.5°C).
The coldest month (with the lowest average sea temperature) is July (25.8°C).

Average daylight in December /
Average sunshine in December
Darwin, Australia

Average daylight in December / Average sunshine in December - Darwin, Australia
  • Average daylight in December: 12h and 5min

The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 24min).

  • Average sunshine in December: 8h and 2min

The months with the most sunshine are June and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 7h and 30min).

Average sunshine days in December
Darwin, Australia

Average sunshine days in December - Darwin, Australia
  • Average sunshine days in December: 2.3 days

The month with the most sunshine days is July (28.4 days).
The month with the least sunshine days is February (0.9 days).

Average UV index in December
Darwin, Australia

Average UV index in December - Darwin, Australia
  • Average UV index in December: 7

The month with the highest UV index is November (UV index 8).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October and December (UV index 7).

Average cloud cover in December
Darwin, Australia

Average cloud cover in December - Darwin, Australia
  • Average cloud cover in December: 37

The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 9).

Average visibility in December
Darwin, Australia

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

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

Darwin, Australia

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