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
The arrival of December sees a recorded average high-temperature of a still moderate 13.5°C (56.3°F), showing little divergence from the previous month's conditions. December sees the temperature falling to a mean low of 7.5°C (45.5°F).Humidity
In December, the average relative humidity in Grimancelos is 81%.Rainfall
In Grimancelos, in December, it is raining for 13.5 days, with typically 122mm (4.8") of accumulated precipitation. In Grimancelos, Portugal, during the entire year, the rain falls for 127.9 days and collects up to 828mm (32.6") of precipitation.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Grimancelos.On the first day of the month, sunrise is at 07:41 and sunset at 17:05. On the last day of December, in Grimancelos, sunrise is at 08:00 and sunset at 17:14 WET.
Sunshine
In December, the average sunshine in Grimancelos is 5.4h.UV index
The months with the lowest UV index in Grimancelos are January through March, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high UV index of 3 in December translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Grimancelos?
What is the average humidity in December in Grimancelos?
How many days does it rain in December in Grimancelos?
What is the month with the shortest days in Grimancelos?
What is the average length of the day in December in Grimancelos?
What time are sunrise and sunset in December in Grimancelos?
How many hours of sunshine does Grimancelos have in December?
When is the lowest UV index in Grimancelos?
How high is the UV index in December in Grimancelos?
Average temperature in December
Grimancelos, Portugal
- Average high temperature in December: 13.5°C
The warmest month (with the highest average high temperature) is August (27.2°C).
The month with the lowest average high temperature is January (12.6°C).
- Average low temperature in December: 7.5°C
The month with the highest average low temperature is July (15.1°C).
The coldest month (with the lowest average low temperature) is February (6.1°C).
Average pressure in December
Grimancelos, 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
Grimancelos, Portugal
- Average wind speed in December: 8.8km/h
The windiest month (with the highest average wind speed) is March (9.3km/h).
The calmest month (with the lowest average wind speed) is September (7.3km/h).
Average humidity in December
Grimancelos, Portugal
- Average humidity in December: 81%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are August and September (65%).
Average rainfall in December
Grimancelos, Portugal
- Average rainfall in December: 122mm
The wettest month (with the highest rainfall) is November (125mm).
The driest month (with the least rainfall) is July (8mm).
Average rainfall days in December
Grimancelos, Portugal
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is November (15.6 days).
The month with the least rainy days is August (3.5 days).
Average daylight in December /
Average sunshine in December
Grimancelos, Portugal
- Average daylight in December: 9h and 1min
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 12min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Grimancelos, Portugal
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is August (26.2 days).
The month with the least sunshine days is November (13.2 days).
Average UV index in December
Grimancelos, 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, November and December (UV index 3).
Average cloud cover in December
Grimancelos, Portugal
- Average cloud cover in December: 42
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in December
Grimancelos, Portugal
- Average visibility in December: 9km
The months with the highest visibility are February, March, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January and April (8km).
