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 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
Bairro Alto starts December with an average high-temperature of a moderate 15.5°C (59.9°F), a minor shift from November's 17.1°C (62.8°F). December nighttime temperatures in Bairro Alto hover close to the daytime peak with an average of 11.3°C (52.3°F).Humidity
In Bairro Alto, the average relative humidity in December is 76%.Rainfall
In December, the rain falls for 11.7 days. Throughout December, 55mm (2.17") of precipitation is accumulated. Throughout the year, there are 118.2 rainfall days, and 405mm (15.94") of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 07:36 and sunset at 17:15. On the last day of the month, sunrise is at 07:54 and sunset at 17:25 WET.
Sunshine
The average sunshine in December in Bairro Alto is 5.8h.UV index
The months with the lowest UV index in Bairro Alto are January through March, November and December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 4 suggests this advice:
Undertake precautions - Guarding against sun damage is counselled. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
What is the average December temperature in Bairro Alto?
What is the average humidity in December in Bairro Alto?
How many days does it rain in December in Bairro Alto?
What is the month with the shortest days in Bairro Alto?
What is the average length of the day in December in Bairro Alto?
What time are sunrise and sunset in December in Bairro Alto?
How long on average sun shines in December in Bairro Alto?
When is the lowest UV index in Bairro Alto?
How high is the UV index in December in Bairro Alto?
Average temperature in December
Bairro Alto, Portugal
- Average high temperature in December: 15.5°C
The warmest month (with the highest average high temperature) is August (24.8°C).
The month with the lowest average high temperature is January (14.5°C).
- Average low temperature in December: 11.3°C
The month with the highest average low temperature is July (17.8°C).
The coldest month (with the lowest average low temperature) is February (10°C).
Average pressure in December
Bairro Alto, 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 (1015.7mbar).
Average wind speed in December
Bairro Alto, Portugal
- Average wind speed in December: 16.9km/h
The windiest month (with the highest average wind speed) is February (18.7km/h).
The calmest month (with the lowest average wind speed) is October (15km/h).
Average humidity in December
Bairro Alto, Portugal
- Average humidity in December: 76%
The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are May, September and October (73%).
Average rainfall in December
Bairro Alto, Portugal
- Average rainfall in December: 55mm
The wettest month (with the highest rainfall) is November (75mm).
The driest month (with the least rainfall) is July (3mm).
Average rainfall days in December
Bairro Alto, Portugal
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is November (14.6 days).
The month with the least rainy days is August (2.6 days).
Average daylight in December /
Average sunshine in December
Bairro Alto, 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 12min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in December
Bairro Alto, Portugal
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is July (26.4 days).
The month with the least sunshine days is November (12.8 days).
Average UV index in December
Bairro Alto, Portugal
- Average UV index in December: 4
The months with the highest UV index are June, July and August (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
Bairro Alto, Portugal
- Average cloud cover in December: 37
The month with the most cloud cover is January (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in December
Bairro Alto, 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).
Bairro Alto, Portugal
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