Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December signals a slight drop in average high-temperature, sliding from November's frosty 7.8°C (46°F) to an icy 4.6°C (40.3°F). Sankt Thomas's nights throughout December are marked by an average low temperature of 0.3°C (32.5°F), a minor drop from the day's high.Humidity
The months with the highest humidity in Sankt Thomas are January and December, with an average relative humidity of 90%.Rainfall
In December, in Sankt Thomas, the rain falls for 7.6 days. Throughout December, 11mm (0.43") of precipitation is accumulated. Throughout the year, there are 75.3 rainfall days, and 108mm (4.25") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. The months with the most snowfall are February and December, with an average 12mm (0.47") of accumulated snow.Daylight
The month with the shortest days in Sankt Thomas is December, with an average of 8h and 12min of daylight.On the first day of the month, sunrise is at 08:11 and sunset at 16:34. On the last day of December, sunrise is at 08:32 and sunset at 16:41 CET.
Sunshine
With an average of 3.4h of sunshine, December has the least sunshine of the year in Sankt Thomas, Germany.UV index
The months with the lowest UV index in Sankt Thomas are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 2 during December leads to these instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Sankt Thomas in December?
What are the most humid months in Sankt Thomas?
What is the average humidity in December in Sankt Thomas?
How many days does it rain in December in Sankt Thomas?
What is the snowiest month in Sankt Thomas?
How many days does it snow in December in Sankt Thomas?
What is the month with the shortest days in Sankt Thomas?
How many hours of daylight does Sankt Thomas have in December?
When is the sunrise / sunset in December in Sankt Thomas?
What is the month with the least sunshine in Sankt Thomas?
How long on average sun shines in December in Sankt Thomas?
What are the months with the lowest UV index in Sankt Thomas?
What is the UV index intensity in December in Sankt Thomas?
Average temperature in December
Sankt Thomas, Germany
- Average high temperature in December: 4.6°C
The warmest month (with the highest average high temperature) is July (22.9°C).
The month with the lowest average high temperature is January (2.9°C).
- Average low temperature in December: 0.3°C
The month with the highest average low temperature is August (12.2°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average pressure in December
Sankt Thomas, Germany
- Average pressure in December: 1017.8mbar
The month with the highest atmospheric pressure is September (1017.9mbar).
The month with the lowest atmospheric pressure is November (1014mbar).
Average wind speed in December
Sankt Thomas, Germany
- Average wind speed in December: 12.7km/h
The windiest months (with the highest average wind speed) are February and December (12.7km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).
Average humidity in December
Sankt Thomas, Germany
- Average humidity in December: 90%
The months with the highest relative humidity are January and December (90%).
The months with the lowest relative humidity are April, July and August (75%).
Average rainfall in December
Sankt Thomas, Germany
- Average rainfall in December: 11mm
The wettest month (with the highest rainfall) is August (13mm).
The driest month (with the least rainfall) is September (5mm).
Average rainfall days in December
Sankt Thomas, Germany
- Average rainfall days in December: 7.6 days
The month with the highest number of rainy days is May (7.7 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in December
Sankt Thomas, Germany
- Average snowfall in December: 12mm
The months with the highest snowfall are February and December (12mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Sankt Thomas, Germany
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sankt Thomas, Germany
- Average daylight in December: 8h and 1min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in December
Sankt Thomas, Germany
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is March (23.3 days).
The month with the least sunshine days is December (19.5 days).
Average UV index in December
Sankt Thomas, Germany
- 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, November and December (UV index 2).
Average cloud cover in December
Sankt Thomas, Germany
- Average cloud cover in December: 68
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in December
Sankt Thomas, Germany
- Average visibility in December: 7km
The months with the highest visibility are March, April and August (9km).
The months with the lowest visibility are January, November and December (7km).
Sankt Thomas, Germany
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