December weather forecast
Lyon, France

Lyon’s December weather paints a picturesque winter feel as the year rounds off. The city readies for the festive season, with decorations twinkling against the frosty backdrop. Despite being the coldest month of the year, a drop in the number of rainfall days to 9.1 provides some relief. Winter enthusiasts can revel in the snowfall, while the city remains abuzz with holiday preparations and celebrations. December concludes the year with a mixture of biting cold and heartwarming holiday cheer.

Temperature

A mild drop in Lyon's average high-temperature is observed in December, transitioning from a cool 10.8°C (51.4°F) in November to a frosty 7.1°C (44.8°F). During the month of December, Lyon anticipates a mean low-temperature of 1.6°C (34.9°F).

Humidity

With an average relative humidity of 86%, December is the most humid month in Lyon.

Rainfall

In Lyon, in December, during 9.1 rainfall days, 55mm (2.17") of precipitation is typically accumulated. Throughout the year, in Lyon, there are 104.1 rainfall days, and 832mm (32.76") of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Lyon. In Lyon, during December, snow falls for 4.6 days. In Lyon, France, during the entire year, snow falls for 19.6 days.

Daylight

With an average of 8h and 42min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 08:01 and sunset at 16:58. On the last day of December, in Lyon, France, sunrise is at 08:21 and sunset at 17:06 CET.

Sunshine

With an average of 1.8h of sunshine, December has the least sunshine of the year.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In December, a daily UV index of 1 turns into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.