December weather forecast
Adelaide, South Africa

December

Weather in December

The first month of the summer, December, is a warm month in Adelaide, South Africa, with an average temperature ranging between max 23.8°C (74.8°F) and min 13.3°C (55.9°F).

Temperature

The arrival of December coincides with an average high-temperature of a moderately hot 23.8°C (74.8°F), indicating a minimal shift from November's 22.5°C (72.5°F). In the month of December, the average low-temperature usually rests at a refreshing 13.3°C (55.9°F).

Humidity

The average relative humidity in December in Adelaide is 81%.

Rainfall

In Adelaide, in December, it is raining for 21.2 days, with typically 64mm (2.52") of accumulated precipitation. In Adelaide, during the entire year, the rain falls for 168.8 days and collects up to 529mm (20.83") of precipitation.

Snowfall

January through June, August through December are months without snowfall in Adelaide.

Daylight

December has the longest days of the year in Adelaide, with an average of 14h and 18min of daylight.
On the first day of the month, sunrise is at 04:59 and sunset at 19:08. On the last day of December, sunrise is at 05:09 and sunset at 19:26 SAST.

Sunshine

The average sunshine in December in Adelaide, South Africa, is 6.7h.

UV index

January through March, August, November and December, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 5 translates into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Frequently asked questions

What is the average December temperature in Adelaide?
During December, Adelaide experiences an average high-temperature of 23.8°C (74.8°F) and a low-temperature of 13.3°C (55.9°F).
What is the average humidity in December in Adelaide?
In December, the average relative humidity in Adelaide, South Africa, is 81%.
How much does it rain in Adelaide in December?
In Adelaide, South Africa, during December, the rain falls for 21.2 days and regularly aggregates up to 64mm (2.52") of precipitation.
When it does not snow in Adelaide?
In Adelaide, snow does not fall in January through June, August through December.
When are the longest days in Adelaide?
December has the longest days of the year in Adelaide, with an average of 14h and 18min of daylight.
What is the average length of the day in December in Adelaide?
The average day length in December in Adelaide, South Africa, is 14h and 16min.
What time are sunrise and sunset in December in Adelaide?
In December, on the first day of the month, sunrise is at 04:59 and sunset at 19:08. On the last day of the month, in Adelaide, South Africa, sunrise is at 05:09 and sunset at 19:26 SAST.
How many hours of sunshine does Adelaide have in December?
In Adelaide, South Africa, the average sunshine duration in December is 6.7h.
What is the month with the highest UV index in Adelaide?
The months with the highest UV index are January through March, August, November and December, with an average maximum UV index of 5.
What is the UV index intensity in December in Adelaide?
In December, the average daily maximum UV index in Adelaide, South Africa, is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to 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 snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Adelaide, South Africa
Average temperature in December
Adelaide, South Africa
  • Average high temperature in December: 23.8°C

The warmest month (with the highest average high temperature) is January (25.3°C).
The month with the lowest average high temperature is July (18°C).

  • Average low temperature in December: 13.3°C

The month with the highest average low temperature is February (14.7°C).
The coldest months (with the lowest average low temperature) are June and July (7°C).

Average pressure in December - Adelaide, South Africa
Average pressure in December
Adelaide, South Africa
  • Average pressure in December: 1014.2mbar

The month with the highest atmospheric pressure is July (1023.1mbar).
The month with the lowest atmospheric pressure is January (1013.8mbar).

Average wind speed in December - Adelaide, South Africa
Average wind speed in December
Adelaide, South Africa
  • Average wind speed in December: 9.5km/h

The windiest month (with the highest average wind speed) is June (14km/h).
The calmest month (with the lowest average wind speed) is March (9.2km/h).

Average humidity in December - Adelaide, South Africa
Average humidity in December
Adelaide, South Africa
  • Average humidity in December: 81%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is June (55%).

Average rainfall in December - Adelaide, South Africa
Average rainfall in December
Adelaide, South Africa
  • Average rainfall in December: 64mm

The wettest month (with the highest rainfall) is February (82mm).
The driest month (with the least rainfall) is June (12mm).

Average rainfall days in December - Adelaide, South Africa
Average rainfall days in December
Adelaide, South Africa
  • Average rainfall days in December: 21.2 days

The month with the highest number of rainy days is December (21.2 days).
The month with the least rainy days is June (6 days).

Average snowfall in December - Adelaide, South Africa
Average snowfall in December
Adelaide, South Africa
  • Average snowfall in December: 0mm

The month with the highest snowfall is July (1mm).
The months with the least snowfall are January, February, March, April, May, June, August, September, October, November and December (0mm).

Average snowfall days in December - Adelaide, South Africa
Average snowfall days in December
Adelaide, South Africa
  • Average snowfall days in December: 0 days

The months with the highest number of snowfall days are July and August (0.2 days).
The months with the least snowfall days are January, February, March, April, May, June, September, October, November and December (0 days).

Average daylight in December / Average sunshine in December - Adelaide, South Africa
Average daylight in December /
Average sunshine in December
Adelaide, South Africa
  • Average daylight in December: 14h and 2min

The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).

  • Average sunshine in December: 6h and 4min

The month with the most sunshine is October (Average sunshine: 7h and 54min).
The month with the least sunshine is April (Average sunshine: 6h and 18min).

Average sunshine days in December - Adelaide, South Africa
Average sunshine days in December
Adelaide, South Africa
  • Average sunshine days in December: 7.3 days

The month with the most sunshine days is June (22.1 days).
The months with the least sunshine days are January, February and December (7.3 days).

Average UV index in December - Adelaide, South Africa
Average UV index in December
Adelaide, South Africa
  • Average UV index in December: 5

The months with the highest UV index are January, February, March, August, November and December (UV index 5).
The months with the lowest UV index are April, May, June, July, September and October (UV index 4).

Average cloud cover in December - Adelaide, South Africa
Average cloud cover in December
Adelaide, South Africa
  • Average cloud cover in December: 62

The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is June (Cloud cover 20).

Average visibility in December - Adelaide, South Africa
Average visibility in December
Adelaide, South Africa
  • Average visibility in December: 7km

The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, November and December (7km).

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