Arcachon
France
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Arcachon, France

The first month of the winter, December, is also a fresh month in Arcachon, France, with temperature in the range of an average high of 11°C (51.8°F) and an average low of 4°C (39.2°F).

Temperature

In Arcachon, the average high-temperature in December slightly decreases, from a moderate 14°C (57.2°F) in November, to a cool 11°C (51.8°F). In Arcachon, France, in December, the average low-temperature is 4°C (39.2°F).

Rainfall

The wettest months are November and December, with an average 126mm (5") of rainfall.

Sea temperature

In December, the average sea temperature is 14°C (57.2°F).
Note: Swimming in 14°C (57.2°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

December has the shortest days of the year, with an average of 8.9h of daylight.

Sunshine

January, November and December, with an average of 3h of sunshine, are months with the least sunshine in Arcachon.

UV index

Months with the lowest UV index in Arcachon, France, are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 1 transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in December in Arcachon?

In December, in Arcachon, France, the average high-temperature is 11°C (51.8°F), and the average low-temperature is 4°C (39.2°F).

How much does it rain in Arcachon in December?

In Arcachon, France, in December, it is raining for 17 days, with typically 126mm (5") of accumulated precipitation.

What is the wettest month in Arcachon?

The wettest months in Arcachon, France, are November and December, with an average 126mm (5") of rainfall.

What is the sea water temperature in December in Arcachon?

In Arcachon, France, the average seawater temperature in December is 14°C (57.2°F). Swimming in 14°C (57.2°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the month with the shortest days in Arcachon?

December has the shortest days of the year in Arcachon, with an average of 8.9h of daylight.

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

In Arcachon, the average length of the day in December is 8.9h.

What is the month with the least sunshine in Arcachon?

Months with the least sunshine in Arcachon, France, are January, November and December, with an average of 3h of sunshine.

How many hours of sunshine does Arcachon have in December?

In Arcachon, the average sunshine in December is 3h.

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

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

What is the UV index intensity in December in Arcachon?

In Arcachon, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to the Sun's UV rays.
Average temperature in December - Arcachon, France
  • Average high temperature in December: 11°C

The warmest month (with the highest average high temperature) is July (25°C).
The month with the lowest average high temperature is January (10°C).

  • Average low temperature in December: 4°C

Months with the highest average low temperature are July and August (15°C).
Coldest months (with the lowest average low temperature) are January, February and December (4°C).

Average rainfall in December - Arcachon, France
  • Average rainfall in December: 126mm

Wettest months (with the highest rainfall) are November and December (126mm).
The driest month (with the lowest rainfall) is July (53mm).

Average rainfall days in December - Arcachon, France
  • Average rainfall days in December: 17 days

The month with the highest number of rainy days is January (18 days).
The month with the lowest number of rainy days is July (11 days).

Average sea temperature in December - Arcachon, France
  • Average sea temperature in December: 14°C

The best month for swimming (with the highest average sea temperature) is August (22°C).
Coldest months (with the lowest average sea temperature) are February and March (12°C).

Average daylight in December / Average sunshine in December - Arcachon, France
  • Average daylight in December: 8.9h

The month with the longest days is June (Average daylight: 15.5h).
The month with shortest days is December (Average daylight: 8.9h).

  • Average sunshine in December: 3h

Months with most sunshine are June and July (Average sunshine: 8h).
Months with least sunshine are January, November and December (Average sunshine: 3).

Average UV index in December - Arcachon, France
  • Average UV index in December: 1

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