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
December
Weather in December
Temperature
December marks a gentle change in average high-temperature, declining from November's cold 4.1°C (39.4°F) to a still wintry 0.1°C (32.2°F). In December, a low-temperature average of -3.5°C (25.7°F) is characteristic of Heby, marking a minor shift from daytime temperatures.Humidity
In December, the average relative humidity in Heby is 90%.Rainfall
In Heby, during December, the rain falls for 7.7 days and regularly aggregates up to 30mm (1.18") of precipitation. Throughout the year, in Heby, Sweden, there are 138.7 rainfall days, and 389mm (15.31") of precipitation is accumulated.Snowfall
Months with snowfall in Heby are January through May, October through December. In Heby, Sweden, during December, snow falls for 11.1 days and regularly aggregates up to 110mm (4.33") of snow. Throughout the year, there are 58.6 snowfall days, and 587mm (23.11") of snow is accumulated.Daylight
The month with the shortest days in Heby is December, with an average of 6h and 6min of daylight.On the first day of December, sunrise is at 08:27 and sunset at 14:55. On the last day of the month, sunrise is at 08:54 and sunset at 14:57 CET.
Sunshine
With an average of 2.3h of sunshine, December has the least sunshine of the year.UV index
In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Heby in December?
What is the average humidity in December in Heby?
How many days does it rain in December in Heby?
How much does it snow in Heby in December?
What is the month with the shortest days in Heby?
What is the average length of the day in December in Heby?
When are sunrise and sunset in December in Heby?
What is the month with the least sunshine in Heby?
How long on average sun shines in December in Heby?
How high is the UV index in December in Heby?
Average temperature in December
Heby, Sweden
- Average high temperature in December: 0.1°C
The warmest month (with the highest average high temperature) is July (22.2°C).
The month with the lowest average high temperature is January (-1.5°C).
- Average low temperature in December: -3.5°C
The month with the highest average low temperature is July (12.2°C).
The coldest month (with the lowest average low temperature) is January (-5.4°C).
Average pressure in December
Heby, Sweden
- Average pressure in December: 1007.4mbar
The month with the highest atmospheric pressure is May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1007.4mbar).
Average wind speed in December
Heby, Sweden
- Average wind speed in December: 12.4km/h
The windiest month (with the highest average wind speed) is December (12.4km/h).
The calmest month (with the lowest average wind speed) is August (9.9km/h).
Average humidity in December
Heby, Sweden
- Average humidity in December: 90%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (69%).
Average rainfall in December
Heby, Sweden
- Average rainfall in December: 30mm
The wettest month (with the highest rainfall) is July (54mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in December
Heby, Sweden
- Average rainfall days in December: 7.7 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is February (5.4 days).
Average snowfall in December
Heby, Sweden
- Average snowfall in December: 110mm
The month with the highest snowfall is January (133mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Heby, Sweden
- Average snowfall days in December: 11.1 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Heby, Sweden
- Average daylight in December: 6h and 1min
The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in December: 2h and 2min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 18min).
Average sunshine days in December
Heby, Sweden
- Average sunshine days in December: 13.9 days
The month with the most sunshine days is October (16.9 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in December
Heby, Sweden
- 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 and November (UV index 1).
Average cloud cover in December
Heby, Sweden
- Average cloud cover in December: 67
The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 44).
Average visibility in December
Heby, Sweden
- Average visibility in December: 7km
The months with the highest visibility are April, May, June, July and August (9km).
The months with the lowest visibility are January, February, March, November and December (7km).
