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 commencement of December records an average high-temperature of a fresh 12.8°C (55°F), barely varying from November's 14.5°C (58.1°F). During the month of December, the nighttime temperature falls to an average of 5.6°C (42.1°F).Humidity
The average relative humidity in December is 81%.Rainfall
In Vale, during December, the rain falls for 11.6 days and regularly aggregates up to 89mm (3.5") of precipitation. In Vale, during the entire year, the rain falls for 127.7 days and collects up to 618mm (24.33") of precipitation.Snowfall
In Vale, snow does not fall in May through October and December.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 07:39 and sunset at 17:06. On the last day of December, in Vale, Portugal, sunrise is at 07:58 and sunset at 17:15 WET.
Sunshine
In December, the average sunshine is 5.6h.UV index
The average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 3 suggests these recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the average humidity in December in Vale?
How many days does it rain in December?
When it does not snow?
Does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December in Vale?
How many hours of sunshine does Vale have in December?
What is the UV index intensity in December?
Average temperature in December
Vale, Portugal
- Average high temperature in December: 12.8°C
The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (12°C).
- Average low temperature in December: 5.6°C
The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is January (4.3°C).
Average pressure in December
Vale, Portugal
- Average pressure in December: 1022.7mbar
The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in December
Vale, Portugal
- Average wind speed in December: 8.4km/h
The windiest month (with the highest average wind speed) is March (8.8km/h).
The calmest month (with the lowest average wind speed) is September (7km/h).
Average humidity in December
Vale, Portugal
- Average humidity in December: 81%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (62%).
Average rainfall in December
Vale, Portugal
- Average rainfall in December: 89mm
The wettest month (with the highest rainfall) is November (96mm).
The driest month (with the least rainfall) is July (6mm).
Average rainfall days in December
Vale, Portugal
- Average rainfall days in December: 11.6 days
The months with the highest number of rainy days are January and April (14.7 days).
The month with the least rainy days is August (3.9 days).
Average snowfall in December
Vale, Portugal
- Average snowfall in December: 0mm
The months with the highest snowfall are January and March (2mm).
The months with the least snowfall are May, June, July, August, September, October and December (0mm).
Average snowfall days in December
Vale, Portugal
- Average snowfall days in December: 0 days
The months with the highest number of snowfall days are January, February and March (0.3 days).
The months with the least snowfall days are May, June, July, August, September, October and December (0 days).
Average daylight in December /
Average sunshine in December
Vale, 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 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in December
Vale, Portugal
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is August (25 days).
The month with the least sunshine days is November (13.5 days).
Average UV index in December
Vale, Portugal
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Vale, Portugal
- Average cloud cover in December: 41
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in December
Vale, Portugal
- Average visibility in December: 8km
The months with the highest visibility are June, July, August and September (9km).
The month with the lowest visibility is January (7km).
