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
December is marked by an average high-temperature of a still enjoyable 16.4°C (61.5°F), almost identical to the preceding month. A mean low-temperature of 11.9°C (53.4°F) is a distinguishing feature of December, indicating a slight dip from daytime highs.Humidity
January, March, April and December, with an average relative humidity of 75%, are the most humid months.Rainfall
In Alcantarilha, in December, it is raining for 5 days, with typically 7mm (0.28") of accumulated precipitation. In Alcantarilha, during the entire year, the rain falls for 47.6 days and collects up to 51mm (2.01") of precipitation.Sea temperature
In Alcantarilha, Portugal, in December, the average water temperature is 17°C (62.6°F).Note: A surface water temperature of 17°C (62.6°F) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 21°C (69.8°F).
Daylight
December has the shortest days of the year in Alcantarilha, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 07:28 and sunset at 17:16. On the last day of December, sunrise is at 07:46 and sunset at 17:26 WET.
Sunshine
In Alcantarilha, the average sunshine in December is 6.4h.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Alcantarilha. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: During December, 4 as the daily maximum UV index converts into the following advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Boost your sun resistance with garments that are densely woven yet spacious.
Frequently asked questions
What are the temperatures in Alcantarilha in December?
What are the most humid months in Alcantarilha?
What is the average humidity in December in Alcantarilha?
How much does it rain in Alcantarilha in December?
What is the sea water temperature in December in Alcantarilha?
What is the month with the shortest days in Alcantarilha?
What is the average length of the day in December in Alcantarilha?
What time are sunrise and sunset in December in Alcantarilha?
How many hours of sunshine does Alcantarilha have in December?
What is the month with the lowest UV index in Alcantarilha?
How high is the UV index in December in Alcantarilha?
Average temperature in December
Alcantarilha, Portugal
- Average high temperature in December: 16.4°C
The warmest month (with the highest average high temperature) is August (27.5°C).
The month with the lowest average high temperature is January (15.1°C).
- Average low temperature in December: 11.9°C
The month with the highest average low temperature is August (19.4°C).
The coldest month (with the lowest average low temperature) is February (10.3°C).
Average pressure in December
Alcantarilha, Portugal
- Average pressure in December: 1022.5mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in December
Alcantarilha, Portugal
- Average wind speed in December: 16.4km/h
The windiest month (with the highest average wind speed) is February (17.9km/h).
The calmest month (with the lowest average wind speed) is September (12.5km/h).
Average humidity in December
Alcantarilha, Portugal
- Average humidity in December: 75%
The months with the highest relative humidity are January, March, April and December (75%).
The month with the lowest relative humidity is August (64%).
Average rainfall in December
Alcantarilha, Portugal
- Average rainfall in December: 7mm
The wettest month (with the highest rainfall) is November (10mm).
The driest months (with the least rainfall) are July and August (0mm).
Average rainfall days in December
Alcantarilha, Portugal
- Average rainfall days in December: 5 days
The months with the highest number of rainy days are April and November (7 days).
The month with the least rainy days is August (0.4 days).
Average sea temperature in December
Alcantarilha, Portugal
- Average sea temperature in December: 17°C
The best months for swimming (with the highest average sea temperature) are August and September (21°C).
The coldest month (with the lowest average sea temperature) is February (15°C).
Average daylight in December /
Average sunshine in December
Alcantarilha, Portugal
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in December
Alcantarilha, Portugal
- Average sunshine days in December: 24.1 days
The month with the most sunshine days is July (30.2 days).
The month with the least sunshine days is April (20.1 days).
Average UV index in December
Alcantarilha, Portugal
- Average UV index in December: 4
The months with the highest UV index are May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in December
Alcantarilha, Portugal
- Average cloud cover in December: 28
The month with the most cloud cover is January (Cloud cover 32).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in December
Alcantarilha, 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).
Alcantarilha, Portugal
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