December weather forecast
Swan Hill, Australia

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Weather in December

December, the first month of the summer in Swan Hill, is a tropical month, with an average temperature varying between 17.6°C (63.7°F) and 30.6°C (87.1°F).

Temperature

As December arrives, Swan Hill's weather shows a minor increase in high-temperatures, edging from November's moderately hot 27.5°C (81.5°F) to a hot 30.6°C (87.1°F). Swan Hill notes a substantial temperature decline from the daytime peaks throughout December, with an average nighttime temperature of 17.6°C (63.7°F).

Humidity

The average relative humidity in December is 39%.

Rainfall

In December, the rain falls for 5.4 days. Throughout December, 16mm (0.63") of precipitation is accumulated. In Swan Hill, during the entire year, the rain falls for 74.2 days and collects up to 193mm (7.6") of precipitation.

Daylight

December has the longest days of the year, with an average of 14h and 30min of daylight.
On the first day of December, sunrise is at 6:03 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 8:43 pm AEDT.

Sunshine

In Swan Hill, the average sunshine in December is 9.2h.

UV index

January and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 7 in December interprets into the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
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Frequently asked questions

Is it hot in Swan Hill during December?

Swan Hill in December has an average high-temperature of 30.6°C (87.1°F) and an average low-temperature of 17.6°C (63.7°F). In November, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is appraised at 28°C (82.4°F).

What is the average humidity in December in Swan Hill?

In December, the average relative humidity in Swan Hill is 39%.

How much does it rain in Swan Hill in December?

In Swan Hill, in December, during 5.4 rainfall days, 16mm (0.63") of precipitation is typically accumulated.

When are the longest days in Swan Hill?

December has the longest days of the year, with an average of 14h and 30min of daylight.

How many hours of daylight does Swan Hill have in December?

The average day length in December in Swan Hill is 14h and 30min.

When are sunrise and sunset in December in Swan Hill?

On the first day of December, sunrise is at 6:03 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 8:43 pm AEDT.

How many hours of sunshine does Swan Hill have in December?

In Swan Hill, Australia, the average sunshine duration in December is 9.2h.

What is the month with the highest UV index in Swan Hill?

January and December, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index intensity in December in Swan Hill?

In December, the average daily maximum UV index in Swan Hill, Australia, is 7. A UV Index value of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.

Average temperature in December
Swan Hill, Australia

Average temperature in December - Swan Hill, Australia
  • Average high temperature in December: 30.6°C

The warmest month (with the highest average high temperature) is January (33.1°C).
The month with the lowest average high temperature is July (14.3°C).

  • Average low temperature in December: 17.6°C

The month with the highest average low temperature is January (19.8°C).
The coldest month (with the lowest average low temperature) is August (5.3°C).

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Average pressure in December
Swan Hill, Australia

Average pressure in December - Swan Hill, Australia
  • Average pressure in December: 1011.4mbar

The month with the highest atmospheric pressure is June (1022mbar).
The month with the lowest atmospheric pressure is January (1010.5mbar).

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Average wind speed in December
Swan Hill, Australia

Average wind speed in December - Swan Hill, Australia
  • Average wind speed in December: 14.4km/h

The windiest months (with the highest average wind speed) are August and October (14.6km/h).
The calmest month (with the lowest average wind speed) is April (12.1km/h).

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Average humidity in December
Swan Hill, Australia

Average humidity in December - Swan Hill, Australia
  • Average humidity in December: 39%

The months with the highest relative humidity are June and July (76%).
The month with the lowest relative humidity is January (36%).

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Average rainfall in December
Swan Hill, Australia

Average rainfall in December - Swan Hill, Australia
  • Average rainfall in December: 16mm

The wettest month (with the highest rainfall) is November (24mm).
The driest months (with the least rainfall) are March, June, September and October (13mm).

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Average rainfall days in December
Swan Hill, Australia

Average rainfall days in December - Swan Hill, Australia
  • Average rainfall days in December: 5.4 days

The month with the highest number of rainy days is August (7.8 days).
The month with the least rainy days is December (5.4 days).

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Average daylight in December /
Average sunshine in December
Swan Hill, Australia

Average daylight in December / Average sunshine in December - Swan Hill, Australia
  • Average daylight in December: 14h and 3min

The month with the longest days is December (Average daylight: 14h and 30min).
The month with the shortest days is June (Average daylight: 9h and 48min).

  • Average sunshine in December: 9h and 1min

The month with the most sunshine is January (Average sunshine: 9h and 24min).
The month with the least sunshine is August (Average sunshine: 7h and 30min).

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Average sunshine days in December
Swan Hill, Australia

Average sunshine days in December - Swan Hill, Australia
  • Average sunshine days in December: 24.5 days

The month with the most sunshine days is January (25.2 days).
The month with the least sunshine days is August (21 days).

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Average UV index in December
Swan Hill, Australia

Average UV index in December - Swan Hill, Australia
  • Average UV index in December: 7

The months with the highest UV index are January and December (UV index 7).
The months with the lowest UV index are June and August (UV index 3).

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Average cloud cover in December
Swan Hill, Australia

Average cloud cover in December - Swan Hill, Australia
  • Average cloud cover in December: 18

The month with the most cloud cover is July (Cloud cover 35).
The month with the least cloud cover is January (Cloud cover 14).

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Average visibility in December
Swan Hill, Australia

Average visibility in December - Swan Hill, Australia
  • Average visibility in December: 10km

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

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Swan Hill, Australia

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