December weather forecastGilly, Switzerland

December

Weather in December

The first month of the winter, December, is also an icy month in Gilly, Switzerland, with temperature in the range of an average low of -1.6°C (29.1°F) and an average high of 3.8°C (38.8°F).

Temperature

Gilly records a mild change in average high-temperature during December, easing from a frosty 7.7°C (45.9°F) in November to an icy 3.8°C (38.8°F). Gilly experiences an average low-temperature of -1.6°C (29.1°F) in the month of December.

Humidity

In Gilly, the average relative humidity in December is 87%.

Rainfall

The month with the most rainfall in Gilly, Switzerland, is December, when the rain falls for 10.1 days and typically aggregates up to 173mm (6.81") of precipitation.

Snowfall

Months with snowfall are January through May, September through December. The month with the most snowfall is December, when snow falls for 16.7 days and typically aggregates up to 833mm (32.8") of snow.

Daylight

December has the shortest days of the year in Gilly, with an average of 8h and 42min of daylight.
On the first day of the month, sunrise is at 07:58 and sunset at 16:49. On the last day of December, in Gilly, sunrise is at 08:18 and sunset at 16:57 CET.

Sunshine

December has the least sunshine of the year, with an average of 4.2h of sunshine.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Gilly. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: In December, a daily UV index of 2 turns into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.

Updated: Feb 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Gilly, is 3.8°C (38.8°F), while the low-temperature averages to -1.6°C (29.1°F).

In December, the average relative humidity in Gilly, Switzerland, is 87%.

December is the month with the most rainfall in Gilly. Rain falls for 10.1 days and accumulates 173mm (6.81") of precipitation.

In December, in Gilly, Switzerland, the rain falls for 10.1 days. Throughout December, 173mm (6.81") of precipitation is accumulated.

The month with the most snowfall in Gilly, Switzerland, is December, when snow falls for 16.7 days and typically aggregates up to 833mm (32.8") of snow.

In Gilly, Switzerland, in December, snow falls for 16.7 days, with typically accumulated 833mm (32.8") of snow.

The month with the shortest days in Gilly, Switzerland, is December, with an average of 8h and 42min of daylight.

In December, the average day length in Gilly is 8h and 40min.

In December, on the first day of the month, sunrise is at 07:58 and sunset at 16:49. On the last day of the month, in Gilly, Switzerland, sunrise is at 08:18 and sunset at 16:57 CET.

The month with the least sunshine in Gilly is December, with an average of 4.2h of sunshine.

In Gilly, the average sunshine duration in December is 4.2h.

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Gilly, Switzerland.

In Gilly, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

7.7°C

3.8°C

2.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10km/h

11.4km/h

11.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

11.1

10.7

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Gilly, Switzerland

Average high temperature in December: 3.8°C

The warmest months (with the highest average high temperature) are July and August (21.8°C).
The month with the lowest average high temperature is January (2.3°C).

Average low temperature in December: -1.6°C

The month with the highest average low temperature is July (11.2°C).
The coldest month (with the lowest average low temperature) is February (-3.7°C).

Average pressure in December
Gilly, Switzerland

Average pressure in December: 1021.2mbar

The month with the highest atmospheric pressure is December (1021.2mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).

Average wind speed in December
Gilly, Switzerland

Average wind speed in December: 10.6km/h

The windiest month (with the highest average wind speed) is February (10.8km/h).
The calmest month (with the lowest average wind speed) is August (6.7km/h).

Average humidity in December
Gilly, Switzerland

Average humidity in December: 87%

The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are July and August (81%).

Average rainfall in December
Gilly, Switzerland

Average rainfall in December: 173mm

The wettest month (with the highest rainfall) is December (173mm).
The driest month (with the least rainfall) is September (84mm).

Average rainfall days in December
Gilly, Switzerland

Average rainfall days in December: 10.1 days

The months with the highest number of rainy days are May and June (22.8 days).
The month with the least rainy days is February (6.7 days).

Average snowfall in December
Gilly, Switzerland

Average snowfall in December: 833mm

The month with the highest snowfall is December (833mm).
The months with the least snowfall are June, July and August (0mm).

Average snowfall days in December
Gilly, Switzerland

Average snowfall days in December: 16.7 days

The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in December /
Average sunshine in December
Gilly, Switzerland

Average daylight in December: 8h and 42min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).

Average sunshine in December: 4h and 12min

The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

Average sunshine days in December
Gilly, Switzerland

Average sunshine days in December: 11.1 days

The month with the most sunshine days is October (13.5 days).
The month with the least sunshine days is June (5.9 days).

Average UV index in December
Gilly, Switzerland

Average UV index in December: 2

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in December
Gilly, Switzerland

Average cloud cover in December: 56

The months with the most cloud cover are January, February and December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 37).

Average visibility in December
Gilly, Switzerland

Average visibility in December: 8km

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (8km).
The month with the lowest visibility is January (7km).