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
In the transition to December, Grójec observes a minor drop in the average high-temperature, shifting from a chilly 7.2°C (45°F) in November to a cold 2.4°C (36.3°F). Grójec's nocturnal December readings average at a subzero cold -1.2°C (29.8°F), showing little variation from the daytime temperatures.Humidity
In December, the average relative humidity in Grójec is 87%.Rainfall
In December, the rain falls for 10.4 days. Throughout December, 24mm (0.94") of precipitation is accumulated. In Grójec, during the entire year, the rain falls for 148 days and collects up to 345mm (13.58") of precipitation.Snowfall
January through May, October through December are months with snowfall in Grójec. In Grójec, in December, snow falls for 10 days, with typically accumulated 50mm (1.97") of snow. Throughout the year, in Grójec, there are 46.1 snowfall days, and 276mm (10.87") of snow is accumulated.Daylight
With an average of 7h and 54min of daylight, December has the shortest days of the year in Grójec.On the first day of December in Grójec, sunrise is at 07:22 and sunset at 15:29. On the last day of the month, sunrise is at 07:43 and sunset at 15:35 CET.
Sunshine
In December, the average sunshine in Grójec is 3.3h.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Grójec. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 1 during December translates into the following directions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. 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 is December in Grójec?
What is the average humidity in December in Grójec?
How many days does it rain in December in Grójec?
How many days does it snow in December in Grójec?
What is the month with the shortest days in Grójec?
How many hours of daylight does Grójec have in December?
When are sunrise and sunset in December in Grójec?
How long on average sun shines in December in Grójec?
When is the lowest UV index in Grójec?
How high is the UV index in December in Grójec?
Average temperature in December
Grójec, Poland
- Average high temperature in December: 2.4°C
The warmest month (with the highest average high temperature) is August (25°C).
The month with the lowest average high temperature is January (-0.4°C).
- Average low temperature in December: -1.2°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).
Average pressure in December
Grójec, Poland
- Average pressure in December: 1016.2mbar
The month with the highest atmospheric pressure is October (1018.2mbar).
The month with the lowest atmospheric pressure is July (1013.6mbar).
Average wind speed in December
Grójec, Poland
- Average wind speed in December: 14km/h
The windiest month (with the highest average wind speed) is December (14km/h).
The calmest month (with the lowest average wind speed) is August (10.4km/h).
Average humidity in December
Grójec, Poland
- Average humidity in December: 87%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (66%).
Average rainfall in December
Grójec, Poland
- Average rainfall in December: 24mm
The wettest month (with the highest rainfall) is May (54mm).
The driest month (with the least rainfall) is November (18mm).
Average rainfall days in December
Grójec, Poland
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in December
Grójec, Poland
- Average snowfall in December: 50mm
The month with the highest snowfall is January (94mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Grójec, Poland
- Average snowfall days in December: 10 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grójec, Poland
- Average daylight in December: 7h and 5min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Grójec, Poland
- Average sunshine days in December: 12 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is February (10.6 days).
Average UV index in December
Grójec, Poland
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Grójec, Poland
- Average cloud cover in December: 68
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Grójec, 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).
