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 beginning signals an average high-temperature of a still moderate 13.1°C (55.6°F), barely different from November's 14.7°C (58.5°F). Giesta anticipates an average minimum temperature of 7.3°C (45.1°F) in the month of December.Humidity
In Giesta, the average relative humidity in December is 83%.Rainfall
In Giesta, during December, the rain falls for 13.5 days and regularly aggregates up to 121mm (4.76") of precipitation. Throughout the year, there are 144.4 rainfall days, and 918mm (36.14") of precipitation is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Giesta.On the first day of the month, sunrise is at 07:40 and sunset at 17:06. On the last day of December, in Giesta, sunrise is at 07:59 and sunset at 17:15 WET.
Sunshine
In Giesta, the average sunshine in December is 5.3h.UV index
The months with the lowest UV index in Giesta 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: A maximum daily UV index of 3 during December morphs into the following directions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Giesta?
What is the average humidity in December in Giesta?
How many days does it rain in December in Giesta?
What is the month with the shortest days in Giesta?
How many hours of daylight does Giesta have in December?
When is the sunrise / sunset in December in Giesta?
How long on average sun shines in December in Giesta?
What is the month with the lowest UV index in Giesta?
What is the UV index intensity in December in Giesta?
Average temperature in December
Giesta, Portugal
- Average high temperature in December: 13.1°C
The warmest month (with the highest average high temperature) is August (26.8°C).
The month with the lowest average high temperature is January (12.1°C).
- Average low temperature in December: 7.3°C
The month with the highest average low temperature is July (14.7°C).
The coldest month (with the lowest average low temperature) is February (5.7°C).
Average pressure in December
Giesta, Portugal
- Average pressure in December: 1022.3mbar
The month with the highest atmospheric pressure is December (1022.3mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in December
Giesta, Portugal
- Average wind speed in December: 9km/h
The windiest month (with the highest average wind speed) is February (9.4km/h).
The calmest month (with the lowest average wind speed) is September (7.4km/h).
Average humidity in December
Giesta, Portugal
- Average humidity in December: 83%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are August and September (67%).
Average rainfall in December
Giesta, Portugal
- Average rainfall in December: 121mm
The wettest month (with the highest rainfall) is November (139mm).
The driest month (with the least rainfall) is July (12mm).
Average rainfall days in December
Giesta, Portugal
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is January (17 days).
The month with the least rainy days is August (5.3 days).
Average daylight in December /
Average sunshine in December
Giesta, Portugal
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- 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 48min).
Average sunshine days in December
Giesta, Portugal
- Average sunshine days in December: 15.8 days
The month with the most sunshine days is August (23.8 days).
The month with the least sunshine days is November (12.2 days).
Average UV index in December
Giesta, Portugal
- Average UV index in December: 3
The month with the highest UV index is 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
Giesta, Portugal
- Average cloud cover in December: 43
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility in December
Giesta, Portugal
- Average visibility in December: 8km
The months with the highest visibility are February, March, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, April, November and December (8km).
