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 sea temperature 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
At the onset of December, Le Portel records an average high-temperature of a chilly 8.5°C (47.3°F), showing little deviation from the preceding month. December registers an average low temperature of 5.9°C (42.6°F) in Le Portel, subtly lower than the daytime maximum.Humidity
January, June and December, with an average relative humidity of 83%, are the most humid months.Rainfall
December is the month with the most rainfall. Rain falls for 16.7 days and accumulates 54mm (2.13") of precipitation.Snowfall
Months with snowfall in Le Portel are January through March, November and December. In Le Portel, France, during December, snow falls for 1 days and regularly aggregates up to 4mm (0.16") of snow. Throughout the year, there are 7.4 snowfall days, and 40mm (1.57") of snow is accumulated.Sea temperature
In Le Portel, the average seawater temperature in December is 11.3°C (52.3°F).Note: Swimming in 11.3°C (52.3°F) can be lethal. Merely spending a few minutes in 13°C (55.4°F) waters feels harsh, and venturing below 10°C (50°F) might disrupt breathing control and bring about cold shock, contingent on individual resilience.
Daylight
The month with the shortest days is December, with an average of 8h and 6min of daylight.On the first day of December in Le Portel, sunrise is at 08:34 and sunset at 16:51. On the last day of the month, sunrise is at 08:55 and sunset at 16:58 CET.
Sunshine
The average sunshine in December is 4.3h.UV index
In Le Portel, the average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The average daily UV index of 3 in December transforms into the following instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Le Portel in December?
What is the most humid month in Le Portel?
What is the average humidity in December in Le Portel?
What is the wettest month in Le Portel?
How much does it rain in Le Portel in December?
How many days does it snow in December in Le Portel?
What is the sea water temperature in December in Le Portel?
What is the month with the shortest days in Le Portel?
How many hours of daylight does Le Portel have in December?
When is the sunrise / sunset in December in Le Portel?
How long on average sun shines in December in Le Portel?
How high is the UV index in December in Le Portel?
Average temperature in December
Le Portel, France
- Average high temperature in December: 8.5°C
The warmest month (with the highest average high temperature) is August (19.6°C).
The month with the lowest average high temperature is January (7°C).
- Average low temperature in December: 5.9°C
The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is January (4.1°C).
Average pressure in December
Le Portel, France
- Average pressure in December: 1015.8mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1011.6mbar).
Average wind speed in December
Le Portel, France
- Average wind speed in December: 27.4km/h
The windiest month (with the highest average wind speed) is December (27.4km/h).
The calmest month (with the lowest average wind speed) is July (18.1km/h).
Average humidity in December
Le Portel, France
- Average humidity in December: 83%
The months with the highest relative humidity are January, June and December (83%).
The months with the lowest relative humidity are August and September (79%).
Average rainfall in December
Le Portel, France
- Average rainfall in December: 54mm
The wettest month (with the highest rainfall) is December (54mm).
The driest months (with the least rainfall) are April and May (19mm).
Average rainfall days in December
Le Portel, France
- Average rainfall days in December: 16.7 days
The month with the highest number of rainy days is November (17.9 days).
The month with the least rainy days is April (11.5 days).
Average snowfall in December
Le Portel, France
- Average snowfall in December: 4mm
The month with the highest snowfall is January (21mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Le Portel, France
- Average snowfall days in December: 1 days
The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Le Portel, France
- Average sea temperature in December: 11.3°C
The best months for swimming (with the highest average sea temperature) are August and September (17.8°C).
The coldest month (with the lowest average sea temperature) is March (7.7°C).
Average daylight in December /
Average sunshine in December
Le Portel, France
- Average daylight in December: 8h and 1min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 4h and 12min).
Average sunshine days in December
Le Portel, France
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is April (15.4 days).
The month with the least sunshine days is November (9.2 days).
Average UV index in December
Le Portel, France
- Average UV index in December: 3
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 and November (UV index 2).
Average cloud cover in December
Le Portel, France
- Average cloud cover in December: 58
The month with the most cloud cover is November (Cloud cover 59).
The months with the least cloud cover are April and August (Cloud cover 38).
Average visibility in December
Le Portel, France
- Average visibility in December: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
