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
December
Weather in December
Temperature
December's onset brings an average high-temperature of a fresh 12.4°C (54.3°F), showing a minute difference from November's 14.2°C (57.6°F). December generally records an average low-temperature of 6.2°C (43.2°F).Humidity
In December, the average relative humidity is 84%.Rainfall
In December, the rain falls for 13.8 days. Throughout December, 142mm (5.59") of precipitation is accumulated. Throughout the year, in Caldelas, there are 150 rainfall days, and 997mm (39.25") of precipitation is accumulated.Daylight
The month with the shortest days in Caldelas, Portugal, is December, with an average of 9h and 12min of daylight.On the first day of December in Caldelas, sunrise is at 07:41 and sunset at 17:04. On the last day of the month, sunrise is at 08:00 and sunset at 17:13 WET.
Sunshine
In December, the average sunshine is 5.3h.UV index
The months with the lowest UV index in Caldelas are January through April, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The UV index of 3 during December leads to these advisories:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Caldelas?
What is the average humidity in December in Caldelas?
How many days does it rain in December in Caldelas?
What is the month with the shortest days in Caldelas?
How many hours of daylight does Caldelas have in December?
What time are sunrise and sunset in December in Caldelas?
How long on average sun shines in December in Caldelas?
What are the months with the lowest UV index in Caldelas?
What is the UV index intensity in December in Caldelas?
Average temperature in December
Caldelas, Portugal
- Average high temperature in December: 12.4°C
The warmest month (with the highest average high temperature) is August (27.6°C).
The month with the lowest average high temperature is January (11.8°C).
- Average low temperature in December: 6.2°C
The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is February (4.7°C).
Average pressure in December
Caldelas, Portugal
- Average pressure in December: 1022.4mbar
The month with the highest atmospheric pressure is December (1022.4mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in December
Caldelas, Portugal
- Average wind speed in December: 7.8km/h
The windiest months (with the highest average wind speed) are February and March (8.2km/h).
The calmest month (with the lowest average wind speed) is September (6.6km/h).
Average humidity in December
Caldelas, Portugal
- Average humidity in December: 84%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (65%).
Average rainfall in December
Caldelas, Portugal
- Average rainfall in December: 142mm
The wettest month (with the highest rainfall) is November (146mm).
The driest month (with the least rainfall) is July (12mm).
Average rainfall days in December
Caldelas, Portugal
- Average rainfall days in December: 13.8 days
The month with the highest number of rainy days is January (17.3 days).
The month with the least rainy days is August (5.4 days).
Average daylight in December /
Average sunshine in December
Caldelas, Portugal
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Caldelas, Portugal
- Average sunshine days in December: 15.4 days
The month with the most sunshine days is August (23.8 days).
The month with the least sunshine days is April (10.5 days).
Average UV index in December
Caldelas, Portugal
- Average UV index in December: 3
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).
Average cloud cover in December
Caldelas, Portugal
- Average cloud cover in December: 46
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in December
Caldelas, Portugal
- Average visibility in December: 8km
The month with the highest visibility is September (9km).
The month with the lowest visibility is January (7km).
