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 sea temperature 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
The arrival of December denotes a barely perceptible change in the average high-temperatures to a still refreshing 15.3°C (59.5°F) from November's 17.5°C (63.5°F). December nights cool down to an average low-temperature of 8.5°C (47.3°F).Humidity
In Vila Franca de Xira, the average relative humidity in December is 78%.Rainfall
In December, the rain falls for 9.5 days. Throughout December, 39mm (1.54") of precipitation is accumulated. Throughout the year, in Vila Franca de Xira, there are 97 rainfall days, and 309mm (12.17") of precipitation is accumulated.Sea temperature
In December, the average sea temperature in Vila Franca de Xira is 16.7°C (62.1°F).Note: For the majority of people, swimming in water at 16.7°C (62.1°F) is not enjoyable. The challenge of controlling breathing escalates as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 07:36 and sunset at 17:14. On the last day of December, sunrise is at 07:54 and sunset at 17:23 WET.
Sunshine
The average sunshine in December is 5.6h.UV index
January, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: An average maximum UV index of 3 in December leads to these recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions
What is the average December temperature in Vila Franca de Xira?
What is the average humidity in December in Vila Franca de Xira?
How many days does it rain in December in Vila Franca de Xira?
What is the sea temperature in December in Vila Franca de Xira?
What is the month with the shortest days in Vila Franca de Xira?
How many hours of daylight does Vila Franca de Xira have in December?
When are sunrise and sunset in December in Vila Franca de Xira?
How long on average sun shines in December in Vila Franca de Xira?
When is the lowest UV index in Vila Franca de Xira?
What is the UV index intensity in December in Vila Franca de Xira?
Average temperature in December
Vila Franca de Xira, Portugal
- Average high temperature in December: 15.3°C
The warmest month (with the highest average high temperature) is August (30.1°C).
The month with the lowest average high temperature is January (14.6°C).
- Average low temperature in December: 8.5°C
The month with the highest average low temperature is July (16.5°C).
The coldest month (with the lowest average low temperature) is February (7.7°C).
Average pressure in December
Vila Franca de Xira, Portugal
- Average pressure in December: 1022.6mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in December
Vila Franca de Xira, Portugal
- Average wind speed in December: 11.7km/h
The windiest month (with the highest average wind speed) is July (14.2km/h).
The calmest month (with the lowest average wind speed) is October (11km/h).
Average humidity in December
Vila Franca de Xira, Portugal
- Average humidity in December: 78%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (64%).
Average rainfall in December
Vila Franca de Xira, Portugal
- Average rainfall in December: 39mm
The wettest month (with the highest rainfall) is November (56mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in December
Vila Franca de Xira, Portugal
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is April (12.8 days).
The month with the least rainy days is July (2.2 days).
Average sea temperature in December
Vila Franca de Xira, Portugal
- Average sea temperature in December: 16.7°C
The best month for swimming (with the highest average sea temperature) is September (20°C).
The coldest month (with the lowest average sea temperature) is March (15.2°C).
Average daylight in December /
Average sunshine in December
Vila Franca de Xira, Portugal
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in December
Vila Franca de Xira, Portugal
- Average sunshine days in December: 20.2 days
The month with the most sunshine days is July (28.4 days).
The month with the least sunshine days is April (15.8 days).
Average UV index in December
Vila Franca de Xira, Portugal
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in December
Vila Franca de Xira, Portugal
- Average cloud cover in December: 39
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in December
Vila Franca de Xira, Portugal
- Average visibility in December: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
Vila Franca de Xira, Portugal
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