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
Weather in December
Temperature
Stepping into December, Vale records an average high-temperature of a fresh 12.8°C (55°F), almost consistent with November. Vale's temperature lowers to a mean of 5.6°C (42.1°F) during the nights in December.Humidity
The average relative humidity in December in Vale, Portugal, is 81%.Rainfall
In Vale, in December, during 11.6 rainfall days, 89mm (3.5") of precipitation is typically accumulated. Throughout the year, there are 127.7 rainfall days, and 618mm (24.33") of precipitation is accumulated.Snowfall
In Vale, snow does not fall in May through October and December.Daylight
The month with the shortest days in Vale 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, sunrise is at 07:58 and sunset at 17:15 WET.
Sunshine
The average sunshine in December is 5.6h.UV index
The average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 3 in December translates into this advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What is the average December temperature in Vale?
What is the average humidity in December in Vale?
How many days does it rain in December in Vale?
When it does not snow in Vale?
Does it snow in Vale in December?
What is the month with the shortest days in Vale?
How many hours of daylight does Vale have in December?
When are sunrise and sunset in December in Vale?
How long on average sun shines in December in Vale?
What is the UV index intensity in December in Vale?
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).
Vale, Portugal
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