December weather forecast and climate
Basel, Switzerland

The Rhine River passing through the city of Basel in Switzerland, with a view of the red stone Munster Cathedral building
The Rhine River passing through the city of Basel in Switzerland, with a view of the red stone Munster Cathedral building

Weather in December

December, the first month of the winter, in Basel, is also a wintry month, with average temperature ranging between max 5.2°C (41.4°F) and min 0.1°C (32.2°F).

Temperature

In Basel, the average high-temperature in December marginally drops, from a chilly 8.7°C (47.7°F) in November, to a cold 5.2°C (41.4°F). In Basel, in December, the average low-temperature is 0.1°C (32.2°F).

Humidity

Months with the highest humidity in Basel are November and December, with an average relative humidity of 82%.

Rainfall

In Basel, in December, during 10.4 rainfall days, 66mm (2.6") of precipitation is typically accumulated. In Basel, Switzerland, during the entire year, the rain falls for 120.4 days and collects up to 843mm (33.19") of precipitation.

Snowfall

January through April, October through December are months with snowfall in Basel. In Basel, during December, snow falls for 2.6 days and regularly aggregates up to 85mm (3.35") of snow. Throughout the year, in Basel, there are 11.1 snowfall days, and 369mm (14.53") of snow is accumulated.

Daylight

With an average of 8.5h of daylight, December has the shortest days of the year in Basel, Switzerland.

Sunshine

With an average of 1.7h of sunshine, December has the least sunshine of the year.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Basel, Switzerland. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 1 transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What are the most humid months in Basel?

Months with the highest humidity in Basel are November and December, with an average relative humidity of 82%.

What is the average humidity in December in Basel?

In Basel, the average relative humidity in December is 82%.

How many days does it rain in December in Basel?

In Basel, in December, during 10.4 rainfall days, 66mm (2.6") of precipitation is typically accumulated.

How much does it snow in Basel in December?

In December, in Basel, Switzerland, it is snowing for 2.6 days. Throughout December, 85mm (3.35") of snow is accumulated.

What is the month with the shortest days in Basel?

The month with the shortest days in Basel, Switzerland, is December, with an average of 8.5h of daylight.

How many hours of daylight does Basel have in December?

The average length of the day in December in Basel is 8.5h.

What is the month with the least sunshine in Basel?

December has the least sunshine of the year in Basel, Switzerland, with an average of 1.7h of sunshine.

How many hours of sunshine does Basel have in December?

The average sunshine in December is 1.7h.

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

Months with the lowest UV index in Basel are January, November and December, with an average maximum UV index of 1.

How high is the UV index in December in Basel?

The average daily maximum UV index in December in Basel is 1. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to the UV radiation.

Average temperature in December
Basel, Switzerland

Average temperature in December - Basel, Switzerland
  • Average high temperature in December: 5.2°C

The warmest month (with the highest average high temperature) is July (25.3°C).
The month with the lowest average high temperature is January (4.5°C).

  • Average low temperature in December: 0.1°C

The month with the highest average low temperature is July (14.5°C).
The coldest month (with the lowest average low temperature) is January (-1.1°C).

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Average humidity in December
Basel, Switzerland

Average humidity in December - Basel, Switzerland
  • Average humidity in December: 82%

Months with the highest relative humidity are November and December (82%).
The month with the lowest relative humidity is April (68%).

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Average rainfall in December
Basel, Switzerland

Average rainfall in December - Basel, Switzerland
  • Average rainfall in December: 66mm

The wettest month (with the highest rainfall) is May (99mm).
The driest month (with the least rainfall) is February (45mm).

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Average rainfall days in December
Basel, Switzerland

Average rainfall days in December - Basel, Switzerland
  • Average rainfall days in December: 10.4 days

The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is February (8.4 days).

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Average snowfall in December
Basel, Switzerland

Average snowfall in December - Basel, Switzerland
  • Average snowfall in December: 85mm

The month with the highest snowfall is February (115mm).
Months with the least snowfall are May, June, July, August and September (0mm).

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Average snowfall days in December
Basel, Switzerland

Average snowfall days in December - Basel, Switzerland
  • Average snowfall days in December: 2.6 days

The month with the highest number of snowfall days is January (3 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Basel, Switzerland
  • Average daylight in December: 8.5h

The month with the longest days is June (Average daylight: 15.9h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in December: 1.7h

The month with the most sunshine is July (Average sunshine: 7.2h).
The month with the least sunshine is December (Average sunshine: 1.7h).

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Average UV index in December
Basel, Switzerland

Average UV index in December - Basel, Switzerland
  • Average UV index in December: 1

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).

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