December weather forecastAveiro, Portugal
December weather for Aveiro, Portugal: With an average of 9h and 18min of daylight, December has the shortest days of the year in Aveiro, Portugal. The month with the shortest days in Aveiro is December, with an average of 9h and 18min of daylight.
December
Weather in December
The arrival of December in Aveiro marks the onset of the winter season. An evident drop in temperature takes place as the city gears up for the harshest part of the year. The weak winter sun plays a feeble role as temperatures fall to a low of 8.6°C (47.5°F), making December one of the significantly cold months. Though November's heavy rainfall eases out to an average of 84mm (3.31"), December witnesses more frequent rain occurrences, enveloping the city with distinct winter vibes. Amply furnished with a series of diverse weather phenomena, December concludes the climatic year in Aveiro, Portugal.Temperature
As December unfolds, the average high-temperature reaches a still refreshing 14.3°C (57.7°F), hinting at a slight fluctuation from the previous month. During the month of December, Aveiro's nighttime temperature lowers to an average of 8.6°C (47.5°F).Humidity
The average relative humidity in December in Aveiro is 79%.Rainfall
In Aveiro, in December, during 12.1 rainfall days, 84mm (3.31") of precipitation is typically accumulated. Throughout the year, in Aveiro, there are 125.4 rainfall days, and 619mm (24.37") of precipitation is accumulated.Daylight
The month with the shortest days in Aveiro 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 17:08. On the last day of December, sunrise is at 07:58 and sunset at 17:17 WET.
Sunshine
In Aveiro, the average sunshine in December is 5.7h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: In December, a daily maximum UV index of 3 leads to the following instructions:
Ensure safety - Recommendations to avert sunburn are presented. The solar radiation around mid-day is intense; avoid the Sun and stay safe. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Aveiro, Portugal
- Average high temperature in December: 14.3°C
The warmest month (with the highest average high temperature) is August (25.4°C).
The month with the lowest average high temperature is January (13.3°C).
- Average low temperature in December: 8.6°C
The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is February (7.6°C).
Average pressure in December
Aveiro, 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 (1015.3mbar).
Average wind speed in December
Aveiro, Portugal
- Average wind speed in December: 12km/h
The windiest month (with the highest average wind speed) is February (12.9km/h).
The calmest month (with the lowest average wind speed) is September (9.8km/h).
Average humidity in December
Aveiro, Portugal
- Average humidity in December: 79%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (70%).
Average rainfall in December
Aveiro, Portugal
- Average rainfall in December: 84mm
The wettest month (with the highest rainfall) is November (94mm).
The driest month (with the least rainfall) is July (6mm).
Average rainfall days in December
Aveiro, Portugal
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is November (14.9 days).
The month with the least rainy days is August (3.3 days).
Average daylight in December /
Average sunshine in December
Aveiro, Portugal
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in December
Aveiro, Portugal
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is November (12.9 days).
Average UV index in December
Aveiro, Portugal
- Average UV index in December: 3
The months with the highest UV index are May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Aveiro, Portugal
- Average cloud cover in December: 39
The month with the most cloud cover is January (Cloud cover 43).
The months with the least cloud cover are July, August and September (Cloud cover 19).
Average visibility in December
Aveiro, Portugal
- Average visibility in December: 10km
The months with the highest visibility are February, June and December (10km).
The months with the lowest visibility are January, March, April, May, July, August, September, October and November (9km).
