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
The start of December comes with a small reduction in the average high-temperature, subtly receding from a frosty 7.6°C (45.7°F) in November to an icy 3°C (37.4°F). Kalwy in December experiences a minor decline in temperature, with an average low of -0.9°C (30.4°F) at night.Humidity
In Kalwy, the average relative humidity in December is 88%.Rainfall
In Kalwy, in December, during 11.9 rainfall days, 26mm (1.02") of precipitation is typically accumulated. In Kalwy, during the entire year, the rain falls for 153.2 days and collects up to 354mm (13.94") of precipitation.Snowfall
January through May, November and December are months with snowfall. In Kalwy, in December, snow falls for 7.5 days, with typically accumulated 39mm (1.54") of snow. Throughout the year, there are 31.7 snowfall days, and 200mm (7.87") of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 7h and 48min of daylight.On the first day of the month, sunrise is at 07:41 and sunset at 15:43. On the last day of December, sunrise is at 08:03 and sunset at 15:49 CET.
Sunshine
In Kalwy, Poland, the average sunshine in December is 3.2h.UV index
The months with the lowest UV index in Kalwy, Poland, are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In December, the maximum UV index of 1 suggests these recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
How cold is it in Kalwy in December?
What is the average humidity in December in Kalwy?
How much does it rain in Kalwy in December?
How many days does it snow in December in Kalwy?
What is the month with the shortest days in Kalwy?
What is the average length of the day in December in Kalwy?
When are sunrise and sunset in December in Kalwy?
How many hours of sunshine does Kalwy have in December?
What are the months with the lowest UV index in Kalwy?
What is the UV index intensity in December in Kalwy?
Average temperature in December
Kalwy, Poland
- Average high temperature in December: 3°C
The warmest month (with the highest average high temperature) is August (25°C).
The month with the lowest average high temperature is January (0.9°C).
- Average low temperature in December: -0.9°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is January (-2.9°C).
Average pressure in December
Kalwy, Poland
- Average pressure in December: 1015.7mbar
The month with the highest atmospheric pressure is October (1017.6mbar).
The month with the lowest atmospheric pressure is July (1014mbar).
Average wind speed in December
Kalwy, Poland
- Average wind speed in December: 14.9km/h
The windiest month (with the highest average wind speed) is December (14.9km/h).
The calmest month (with the lowest average wind speed) is August (11.4km/h).
Average humidity in December
Kalwy, Poland
- Average humidity in December: 88%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (66%).
Average rainfall in December
Kalwy, Poland
- Average rainfall in December: 26mm
The wettest month (with the highest rainfall) is July (51mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in December
Kalwy, Poland
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (8.5 days).
Average snowfall in December
Kalwy, Poland
- Average snowfall in December: 39mm
The month with the highest snowfall is January (74mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in December
Kalwy, Poland
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Kalwy, Poland
- Average daylight in December: 7h and 5min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Kalwy, Poland
- Average sunshine days in December: 11.5 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is January (11.3 days).
Average UV index in December
Kalwy, Poland
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Kalwy, Poland
- Average cloud cover in December: 69
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Kalwy, Poland
- Average visibility in December: 8km
The months with the highest visibility are June and August (10km).
The month with the lowest visibility is January (7km).
Kalwy, Poland
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