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 commences with an average high-temperature of a frosty 9.6°C (49.3°F), showing little deviation from November's 11.7°C (53.1°F). The nighttime temperature dips to an icy 3.1°C (37.6°F) on average during December.Humidity
The average relative humidity in December is 82%.Rainfall
December is the month with the most rainfall. Rain falls for 9.8 days and accumulates 65mm (2.56") of precipitation.Snowfall
January through April, November and December are months with snowfall. In Trancoso, during December, snow falls for 1.7 days and regularly aggregates up to 32mm (1.26") of snow. Throughout the year, there are 13 snowfall days, and 161mm (6.34") of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 07:34 and sunset at 17:02. On the last day of the month, sunrise is at 07:53 and sunset at 17:11 WET.
Sunshine
In December, the average sunshine is 5h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: The UV index of 2 during December translates into the following guidance:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the average humidity in December?
What is the rainiest month in Trancoso?
How much does it rain in Trancoso in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Trancoso have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Trancoso have in December?
When is the lowest UV index in Trancoso?
What is the UV index reading in December?
Average temperature in December
Trancoso, Portugal
- Average high temperature in December: 9.6°C
The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (8.7°C).
- Average low temperature in December: 3.1°C
The month with the highest average low temperature is July (14.2°C).
The coldest month (with the lowest average low temperature) is February (1.8°C).
Average pressure in December
Trancoso, Portugal
- Average pressure in December: 1023.1mbar
The month with the highest atmospheric pressure is December (1023.1mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in December
Trancoso, Portugal
- Average wind speed in December: 11.3km/h
The windiest month (with the highest average wind speed) is February (12.7km/h).
The calmest month (with the lowest average wind speed) is September (9.1km/h).
Average humidity in December
Trancoso, Portugal
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (50%).
Average rainfall in December
Trancoso, Portugal
- Average rainfall in December: 65mm
The wettest month (with the highest rainfall) is December (65mm).
The driest month (with the least rainfall) is August (6mm).
Average rainfall days in December
Trancoso, Portugal
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is April (16.2 days).
The month with the least rainy days is August (2.7 days).
Average snowfall in December
Trancoso, Portugal
- Average snowfall in December: 32mm
The months with the highest snowfall are January and February (44mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Trancoso, Portugal
- Average snowfall days in December: 1.7 days
The month with the highest number of snowfall days is January (3.9 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
Trancoso, Portugal
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 0min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Trancoso, Portugal
- Average sunshine days in December: 19.7 days
The month with the most sunshine days is August (27.1 days).
The month with the least sunshine days is April (12.5 days).
Average UV index in December
Trancoso, Portugal
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Trancoso, Portugal
- Average cloud cover in December: 47
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in December
Trancoso, Portugal
- Average visibility in December: 8km
The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are January, February, April, November and December (8km).
