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 snowfall in December
- Average snowfall 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
Gravelines's average high-temperature marks a chilly 8.1°C (46.6°F) with the advent of December, closely mirroring that of the preceding month. December nights witness a mild cool down to an average low of 5.3°C (41.5°F).Humidity
January and December, with an average relative humidity of 83%, are the most humid months.Rainfall
The month with the most rainfall in Gravelines is December, when the rain falls for 17.2 days and typically aggregates up to 59mm (2.32") of precipitation.Snowfall
January through March, November and December are months with snowfall. In Gravelines, France, in December, snow falls for 1.7 days, with typically accumulated 12mm (0.47") of snow. In Gravelines, during the entire year, snow falls for 8.7 days and aggregates up to 63mm (2.48") of snow.Daylight
With an average of 8h and 0min of daylight, December has the shortest days of the year in Gravelines.On the first day of the month, sunrise is at 08:33 and sunset at 16:48. On the last day of December, sunrise is at 08:54 and sunset at 16:54 CET.
Sunshine
In Gravelines, the average sunshine in December is 4.2h.UV index
The months with the lowest UV index in Gravelines are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 2 during December translates into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Gravelines in December?
What are the most humid months in Gravelines?
What is the average humidity in December in Gravelines?
What is the rainiest month in Gravelines?
How many days does it rain in December in Gravelines?
How many days does it snow in December in Gravelines?
What is the month with the shortest days in Gravelines?
How many hours of daylight does Gravelines have in December?
When is the sunrise / sunset in December in Gravelines?
How long on average sun shines in December in Gravelines?
What are the months with the lowest UV index in Gravelines?
What is the UV index reading in December in Gravelines?
Average temperature in December
Gravelines, France
- Average high temperature in December: 8.1°C
The warmest month (with the highest average high temperature) is August (21°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in December: 5.3°C
The month with the highest average low temperature is August (15.4°C).
The coldest month (with the lowest average low temperature) is January (3.6°C).
Average pressure in December
Gravelines, France
- Average pressure in December: 1015.5mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1011.6mbar).
Average wind speed in December
Gravelines, France
- Average wind speed in December: 24km/h
The windiest month (with the highest average wind speed) is December (24km/h).
The calmest month (with the lowest average wind speed) is July (16.6km/h).
Average humidity in December
Gravelines, France
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (75%).
Average rainfall in December
Gravelines, France
- Average rainfall in December: 59mm
The wettest month (with the highest rainfall) is December (59mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in December
Gravelines, France
- Average rainfall days in December: 17.2 days
The month with the highest number of rainy days is November (18.3 days).
The month with the least rainy days is April (11.6 days).
Average snowfall in December
Gravelines, France
- Average snowfall in December: 12mm
The month with the highest snowfall is January (28mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Gravelines, France
- Average snowfall days in December: 1.7 days
The month with the highest number of snowfall days is January (2.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Gravelines, France
- Average daylight in December: 8h and 0min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Gravelines, France
- Average sunshine days in December: 10 days
The month with the most sunshine days is April (16.5 days).
The month with the least sunshine days is November (9.1 days).
Average UV index in December
Gravelines, France
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Gravelines, France
- Average cloud cover in December: 60
The month with the most cloud cover is December (Cloud cover 60).
The month with the least cloud cover is April (Cloud cover 38).
Average visibility in December
Gravelines, France
- Average visibility in December: 9km
The months with the highest visibility are March, April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, November and December (9km).
