Port-aux-Français
French Southern and Antarctic Lands
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Port-aux-Français, French Southern and Antarctic Lands

The first month of the summer, December, is a cool month in Port-aux-Français, French Southern and Antarctic Lands, with average temperature fluctuating between 3.1°C (37.6°F) and 10.2°C (50.4°F).

Temperature

In December, the average high-temperature is almost the same as in November - a cool 10.2°C (50.4°F). In Port-aux-Français, French Southern and Antarctic Lands, in December, the average low-temperature is 3.1°C (37.6°F).

Rainfall

In Port-aux-Français, during December, the rain falls for 16 days and regularly aggregates up to 57.6mm (2.3") of precipitation. In Port-aux-Français, during the entire year, the rain falls for 169 days and collects up to 707.9mm (27.9") of precipitation.

Snowfall

Months with snowfall are January, March through December.

Sea temperature

In December, the average sea temperature is 4°C (39.2°F). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

Daylight

With an average of 16.2h of daylight, December has the longest days of the year.

Sunshine

In Port-aux-Français, the average sunshine in December is 6h.

UV index

January and December, with an average maximum UV index of 8, are months with the highest UV index. A UV Index of 8 to 10 symbolizes a very high health hazard from unsafe exposure to the UV radiation for average individuals.
In December, the average maximum UV index of 8 translate into the following recommendations:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Port-aux-Français?

The average high-temperature, in December, in Port-aux-Français, French Southern and Antarctic Lands, is 10.2°C (50.4°F), while the average low-temperature is 3.1°C (37.6°F).

How many days does it rain in December in Port-aux-Français?

In Port-aux-Français, in December, during 16 rainfall days, 57.6mm (2.3") of precipitation is typically accumulated.

How many days does it snow in December in Port-aux-Français?

In Port-aux-Français, during December, snow falls for 2 days.

What is the water temperature in December in Port-aux-Français?

In Port-aux-Français, in December, the average water temperature is 4°C (39.2°F). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

When are the longest days in Port-aux-Français?

With an average of 16.2h of daylight, December has the longest days of the year in Port-aux-Français.

How many hours of daylight does Port-aux-Français have in December?

In Port-aux-Français, the average length of the day in December is 16.2h.

How many hours of sunshine does Port-aux-Français have in December?

In Port-aux-Français, French Southern and Antarctic Lands, the average sunshine in December is 6h.

What is the month with the highest UV index in Port-aux-Français?

Months with the highest UV index are January and December, with an average maximum UV index of 8.

How high is the UV index in December in Port-aux-Français?

The average daily maximum UV index in December is 8. A UV Index of 8 to 10 symbolizes a very high health risk from the exposure to the Sun's UV rays.
Average temperature in December - Port-aux-Français, French Southern and Antarctic Lands
  • Average high temperature in December: 10.2°C

The warmest month (with the highest average high temperature) is February (11.5°C).
The month with the lowest average high temperature is July (4.8°C).

  • Average low temperature in December: 3.1°C

The month with the highest average low temperature is February (4.3°C).
Coldest months (with the lowest average low temperature) are July and August (-0.8°C).

Average rainfall in December - Port-aux-Français, French Southern and Antarctic Lands
  • Average rainfall in December: 57.6mm

The wettest month (with the highest rainfall) is May (69mm).
The driest month (with the lowest rainfall) is February (45.5mm).

Average rainfall days in December - Port-aux-Français, French Southern and Antarctic Lands
  • Average rainfall days in December: 16 days

Months with the highest number of rainy days are January, March, April and December (16 days).
The month with the lowest number of rainy days is September (12 days).

Average snowfall days in December - Port-aux-Français, French Southern and Antarctic Lands
  • Average snowfall days in December: 2 days

The month with the highest number of snowfall days is August (13 days).
The month with the lowest number of snowfall days is February (0 days).

Average sea temperature in December - Port-aux-Français, French Southern and Antarctic Lands
  • Average sea temperature in December: 4°C

Best months for swimming (with the highest average sea temperature) are February and March (5°C).
Coldest months (with the lowest average sea temperature) are July, August, September and October (2°C).

Average daylight in December / Average sunshine in December - Port-aux-Français, French Southern and Antarctic Lands
  • Average daylight in December: 16.2h

The month with the longest days is December (Average daylight: 16.2h).
The month with shortest days is June (Average daylight: 8.3h).

  • Average sunshine in December: 6h

The month with most sunshine is January (Average sunshine: 6.1h).
The month with least sunshine is June (Average sunshine: 2.4h).

Average UV index in December - Port-aux-Français, French Southern and Antarctic Lands
  • Average UV index in December: 8

Months with the highest UV index are January and December (UV index 8).
Months with the lowest UV index are May, June, July and August (UV index 1).