December weather forecast
Kiama, Australia

December

Weather in December

The first month of the summer, December, is a warm month in Kiama, Australia, with an average temperature ranging between max 24.1°C (75.4°F) and min 17.5°C (63.5°F).

Temperature

Kiama's average high-temperature in December is a warm 24.1°C (75.4°F), marking an insignificant difference from the 22.4°C (72.3°F) of November. In the month of December, the nighttime temperature in Kiama dips to a steady average of 17.5°C (63.5°F).

Humidity

The average relative humidity in December is 74%.

Rainfall

In Kiama, during December, the rain falls for 15.5 days and regularly aggregates up to 56mm (2.2") of precipitation. Throughout the year, in Kiama, Australia, there are 169 rainfall days, and 678mm (26.69") of precipitation is accumulated.

Sea temperature

In Kiama, in December, the average water temperature is 21.1°C (70°F).
Note: Swimming is not a pleasurable activity for the majority in water at 21.1°C (70°F). Breathing control gets harder as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).

Daylight

The month with the longest days in Kiama is December, with an average of 14h and 24min of daylight.
On the first day of December in Kiama, sunrise is at 5:36 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:12 pm AEDT.

Sunshine

The average sunshine in December in Kiama, Australia, is 9.7h.

UV index

The months with the highest UV index are January and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 6 during December translates into the following directions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

Frequently asked questions

What are the temperatures in Kiama in December?
In Kiama, in December, the average high-temperature is 24.1°C (75.4°F), and the average low-temperature is 17.5°C (63.5°F).
What is the average humidity in December in Kiama?
The average relative humidity in December in Kiama, Australia, is 74%.
How many days does it rain in December in Kiama?
In Kiama, Australia, in December, during 15.5 rainfall days, 56mm (2.2") of precipitation is typically accumulated.
How cold is the water in December in Kiama?
In December, the average sea temperature in Kiama, Australia, is 21.1°C (70°F). For swimming, a surface water temperature of 21.1°C (70°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
When are the longest days in Kiama?
The month with the longest days is December, with an average of 14h and 24min of daylight.
How many hours of daylight does Kiama have in December?
In Kiama, Australia, the average day length in December is 14h and 26min.
When are sunrise and sunset in December in Kiama?
On the first day of December in Kiama, sunrise is at 5:36 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:12 pm AEDT.
How many hours of sunshine does Kiama have in December?
The average sunshine duration in December in Kiama is 9.7h.
What is the month with the highest UV index in Kiama?
January and December, with an average maximum UV index of 6, are months with the highest UV index.
How high is the UV index in December in Kiama?
The average daily maximum UV index in December in Kiama, Australia, is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
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 sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Kiama, Australia
  • Average high temperature in December: 24.1°C

The warmest month (with the highest average high temperature) is January (25.7°C).
The month with the lowest average high temperature is July (15.7°C).

  • Average low temperature in December: 17.5°C

The months with the highest average low temperature are January and February (19°C).
The coldest month (with the lowest average low temperature) is July (9.7°C).

Average pressure in December
Kiama, Australia
  • Average pressure in December: 1013.3mbar

The month with the highest atmospheric pressure is June (1020.8mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).

Average wind speed in December
Kiama, Australia
  • Average wind speed in December: 14.7km/h

The windiest month (with the highest average wind speed) is August (16.2km/h).
The calmest month (with the lowest average wind speed) is April (13.9km/h).

Average humidity in December
Kiama, Australia
  • Average humidity in December: 74%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (67%).

Average rainfall in December
Kiama, Australia
  • Average rainfall in December: 56mm

The wettest month (with the highest rainfall) is February (97mm).
The driest month (with the least rainfall) is September (33mm).

Average rainfall days in December
Kiama, Australia
  • Average rainfall days in December: 15.5 days

The month with the highest number of rainy days is March (18.3 days).
The month with the least rainy days is August (9.5 days).

Average sea temperature in December
Kiama, Australia
  • Average sea temperature in December: 21.1°C

The best month for swimming (with the highest average sea temperature) is February (23.5°C).
The coldest month (with the lowest average sea temperature) is August (18.1°C).

Average daylight in December /
Average sunshine in December
Kiama, 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: 5h and 54min).

Average sunshine days in December
Kiama, Australia
  • Average sunshine days in December: 10.5 days

The month with the most sunshine days is August (19.5 days).
The month with the least sunshine days is February (7.9 days).

Average UV index in December
Kiama, Australia
  • Average UV index in December: 6

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

Average cloud cover in December
Kiama, 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 24).

Average visibility in December
Kiama, 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).

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