December weather forecastSiemyśl, Poland
December
Weather in December
December, the first month of the winter in Siemyśl, is also an icy month, with an average temperature varying between 1.3°C (34.3°F) and 4°C (39.2°F).Temperature
With the beginning of December, the average high-temperature shows a small decrease, transitioning from a chilly 7.8°C (46°F) in November to an icy 4°C (39.2°F). Siemyśl's December nights exhibit a subtle drop in temperature, averaging at 1.3°C (34.3°F), closely aligned with the daytime highs.Humidity
In Siemyśl, the average relative humidity in December is 86%.Rainfall
In Siemyśl, during December, the rain falls for 14.9 days and regularly aggregates up to 39mm (1.54") of precipitation. Throughout the year, there are 164.8 rainfall days, and 438mm (17.24") of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Siemyśl. In Siemyśl, in December, snow falls for 6.2 days, with typically accumulated 25mm (0.98") of snow. In Siemyśl, Poland, during the entire year, snow falls for 29.1 days and aggregates up to 146mm (5.75") of snow.Daylight
With an average of 7h and 30min of daylight, December has the shortest days of the year in Siemyśl.On the first day of the month, sunrise is at 07:54 and sunset at 15:39. On the last day of December, in Siemyśl, sunrise is at 08:16 and sunset at 15:45 CET.
Sunshine
January and December, with an average of 3.1h of sunshine, are months with the least sunshine in Siemyśl.UV index
In December, the average daily maximum UV index in Siemyśl, Poland, is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Siemyśl, Poland
- Average high temperature in December: 4°C
The warmest month (with the highest average high temperature) is August (22°C).
The month with the lowest average high temperature is January (1.9°C).
- Average low temperature in December: 1.3°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is January (-0.7°C).
Average pressure in December
Siemyśl, Poland
- Average pressure in December: 1013.2mbar
The months with the highest atmospheric pressure are September and October (1016.3mbar).
The month with the lowest atmospheric pressure is November (1013.1mbar).
Average wind speed in December
Siemyśl, Poland
- Average wind speed in December: 22.6km/h
The windiest month (with the highest average wind speed) is December (22.6km/h).
The calmest month (with the lowest average wind speed) is August (16km/h).
Average humidity in December
Siemyśl, Poland
- Average humidity in December: 86%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and August (74%).
Average rainfall in December
Siemyśl, Poland
- Average rainfall in December: 39mm
The wettest month (with the highest rainfall) is July (60mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in December
Siemyśl, Poland
- Average rainfall days in December: 14.9 days
The month with the highest number of rainy days is August (17.6 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in December
Siemyśl, Poland
- Average snowfall in December: 25mm
The month with the highest snowfall is February (47mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Siemyśl, Poland
- Average snowfall days in December: 6.2 days
The month with the highest number of snowfall days is February (8.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Siemyśl, Poland
- Average daylight in December: 7h and 30min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in December: 3h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The months with the least sunshine are January and December (Average sunshine: 3h and 6min).
Average sunshine days in December
Siemyśl, Poland
- Average sunshine days in December: 9.6 days
The month with the most sunshine days is April (16.3 days).
The month with the least sunshine days is December (9.6 days).
Average UV index in December
Siemyśl, Poland
- Average UV index in December: 2
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 November (UV index 1).
Average cloud cover in December
Siemyśl, Poland
- Average cloud cover in December: 70
The months with the most cloud cover are January and December (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Siemyśl, Poland
- Average visibility in December: 9km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
