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
Amadora experiences a subtle adjustment in high-temperatures to a moderate 15.5°C (59.9°F) with the onset of December, maintaining near parity with November's 17.4°C (63.3°F). December nights reveal a minor deviation from daytime highs, with a mean low-temperature of 11.4°C (52.5°F).Humidity
In December, the average relative humidity in Amadora is 75%.Rainfall
In December, in Amadora, the rain falls for 11 days. Throughout December, 52mm (2.05") of precipitation is accumulated. Throughout the year, in Amadora, there are 112.7 rainfall days, and 389mm (15.31") of precipitation is accumulated.Sea temperature
In Amadora, Portugal, the average seawater temperature in December is 16.6°C (61.9°F).Note: Swimming is not an enjoyable activity for the majority when the water is at 16.6°C (61.9°F). The difficulty of controlling breathing increases as the temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 07:36 and sunset at 17:15. On the last day of December, in Amadora, sunrise is at 07:54 and sunset at 17:25 WET.
Sunshine
In December, the average sunshine is 5.9h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In December, a regular UV index of 3 translates into these guidelines:
Ensure safety - Sun damage prevention is strongly urged. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
What are the temperatures in Amadora in December?
What is the average humidity in December in Amadora?
How many days does it rain in December in Amadora?
What is the sea temperature in December in Amadora?
What is the month with the shortest days in Amadora?
What is the average length of the day in December in Amadora?
When is the sunrise / sunset in December in Amadora?
How long on average sun shines in December in Amadora?
When is the lowest UV index in Amadora?
How high is the UV index in December in Amadora?
Average temperature in December
Amadora, Portugal
- Average high temperature in December: 15.5°C
The warmest month (with the highest average high temperature) is August (25.8°C).
The month with the lowest average high temperature is January (14.5°C).
- Average low temperature in December: 11.4°C
The months with the highest average low temperature are July and August (18.1°C).
The coldest month (with the lowest average low temperature) is February (10.3°C).
Average pressure in December
Amadora, 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 (1015.7mbar).
Average wind speed in December
Amadora, Portugal
- Average wind speed in December: 16km/h
The windiest month (with the highest average wind speed) is February (17.8km/h).
The calmest month (with the lowest average wind speed) is October (14.1km/h).
Average humidity in December
Amadora, Portugal
- Average humidity in December: 75%
The month with the highest relative humidity is January (76%).
The months with the lowest relative humidity are May and August (70%).
Average rainfall in December
Amadora, Portugal
- Average rainfall in December: 52mm
The wettest month (with the highest rainfall) is November (69mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in December
Amadora, Portugal
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is November (14.4 days).
The month with the least rainy days is August (2.6 days).
Average sea temperature in December
Amadora, Portugal
- Average sea temperature in December: 16.6°C
The best month for swimming (with the highest average sea temperature) is September (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).
Average daylight in December /
Average sunshine in December
Amadora, Portugal
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 5min
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 24min).
Average sunshine days in December
Amadora, Portugal
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is November (13.3 days).
Average UV index in December
Amadora, Portugal
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Amadora, Portugal
- Average cloud cover in December: 35
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in December
Amadora, Portugal
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Amadora, Portugal
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