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
The arrival of December sees a recorded average high-temperature of a still fresh 10.8°C (51.4°F), showing little divergence from the previous month's conditions. Seia encounters an average low-temperature of 3.4°C (38.1°F) during December nights.Humidity
The average relative humidity in December is 82%.Rainfall
The month with the most rainfall in Seia is December, when the rain falls for 10.5 days and typically aggregates up to 83mm (3.27") of precipitation.Snowfall
January through April, October through December are months with snowfall. In Seia, in December, during 2.4 snowfall days, 43mm (1.69") of snow is typically accumulated. In Seia, during the entire year, snow falls for 15.4 days and aggregates up to 244mm (9.61") of snow.Daylight
December has the shortest days of the year in Seia, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 07:35 and sunset at 17:05. On the last day of the month, sunrise is at 07:53 and sunset at 17:14 WET.
Sunshine
In December, the average sunshine is 5.3h.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 of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Seia in December?
What is the average humidity in December in Seia?
What is the wettest month in Seia?
How many days does it rain in December in Seia?
How many days does it snow in December in Seia?
What is the month with the shortest days in Seia?
How many hours of daylight does Seia have in December?
What time are sunrise and sunset in December in Seia?
How many hours of sunshine does Seia have in December?
When is the lowest UV index in Seia?
What is the UV index intensity in December in Seia?
Average temperature in December
Seia, Portugal
- Average high temperature in December: 10.8°C
The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (9.8°C).
- Average low temperature in December: 3.4°C
The month with the highest average low temperature is August (14.2°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average pressure in December
Seia, Portugal
- Average pressure in December: 1023mbar
The month with the highest atmospheric pressure is December (1023mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in December
Seia, Portugal
- Average wind speed in December: 10.2km/h
The windiest month (with the highest average wind speed) is February (11.5km/h).
The calmest month (with the lowest average wind speed) is September (8.3km/h).
Average humidity in December
Seia, 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 (51%).
Average rainfall in December
Seia, Portugal
- Average rainfall in December: 83mm
The wettest month (with the highest rainfall) is December (83mm).
The driest months (with the least rainfall) are July and August (7mm).
Average rainfall days in December
Seia, Portugal
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is April (16.1 days).
The month with the least rainy days is August (2.5 days).
Average snowfall in December
Seia, Portugal
- Average snowfall in December: 43mm
The month with the highest snowfall is January (62mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Seia, Portugal
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Seia, Portugal
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 2min
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 30min).
Average sunshine days in December
Seia, Portugal
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is August (27.5 days).
The month with the least sunshine days is April (12.7 days).
Average UV index in December
Seia, 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
Seia, Portugal
- Average cloud cover in December: 45
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in December
Seia, Portugal
- Average visibility in December: 8km
The months with the highest visibility are July and August (10km).
The month with the lowest visibility is January (7km).
