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
Portbail in December witnesses an average high-temperature of a still fresh 10.9°C (51.6°F), indicating a slight variation from November's 12.7°C (54.9°F). Portbail encounters a negligible difference from daytime peaks throughout the December nights, with a low-temperature average of 8.7°C (47.7°F).Humidity
The months with the lowest humidity are November and December, with an average relative humidity of 78%.Rainfall
In December, the rain falls for 20 days. Throughout December, 66mm (2.6") of precipitation is accumulated. Throughout the year, in Portbail, France, there are 189 rainfall days, and 538mm (21.18") of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Portbail, in December, snow falls for 0.2 days, with typically accumulated 1mm (0.04") of snow. In Portbail, France, during the entire year, snow falls for 1.4 days and aggregates up to 6mm (0.24") of snow.Sea temperature
In Portbail, in December, the average water temperature is 11.8°C (53.2°F).Note: Diving into 11.8°C (53.2°F) is practical below 10°C (50°F), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Merely touching waters at 13°C (55.4°F) feels ice-cold.
Daylight
The month with the shortest days is December, with an average of 8h and 18min of daylight.On the first day of December, sunrise is at 08:41 and sunset at 17:10. On the last day of the month, sunrise is at 09:02 and sunset at 17:17 CET.
Sunshine
In Portbail, France, the average sunshine in December is 4.1h.UV index
The average daily maximum UV index in December in Portbail is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: In December, the maximum UV index of 3 suggests these recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Portbail in December?
What are the least humid months in Portbail?
What is the average humidity in December in Portbail?
How many days does it rain in December in Portbail?
How much does it snow in Portbail in December?
How cold is the water in December in Portbail?
What is the month with the shortest days in Portbail?
How many hours of daylight does Portbail have in December?
When is the sunrise / sunset in December in Portbail?
How long on average sun shines in December in Portbail?
What is the UV index intensity in December in Portbail?
Average temperature in December
Portbail, France
- Average high temperature in December: 10.9°C
The warmest month (with the highest average high temperature) is August (18.2°C).
The month with the lowest average high temperature is February (9°C).
- Average low temperature in December: 8.7°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is February (6.8°C).
Average pressure in December
Portbail, France
- Average pressure in December: 1017mbar
The month with the highest atmospheric pressure is September (1018mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in December
Portbail, France
- Average wind speed in December: 34km/h
The windiest month (with the highest average wind speed) is December (34km/h).
The calmest month (with the lowest average wind speed) is July (20.4km/h).
Average humidity in December
Portbail, France
- Average humidity in December: 78%
The months with the highest relative humidity are June and July (83%).
The months with the lowest relative humidity are November and December (78%).
Average rainfall in December
Portbail, France
- Average rainfall in December: 66mm
The wettest month (with the highest rainfall) is November (78mm).
The driest month (with the least rainfall) is July (25mm).
Average rainfall days in December
Portbail, France
- Average rainfall days in December: 20 days
The month with the highest number of rainy days is November (21.2 days).
The months with the least rainy days are May and July (12.2 days).
Average snowfall in December
Portbail, France
- Average snowfall in December: 1mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Portbail, France
- Average snowfall days in December: 0.2 days
The months with the highest number of snowfall days are January and February (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in December
Portbail, France
- Average sea temperature in December: 11.8°C
The best month for swimming (with the highest average sea temperature) is September (17.9°C).
The coldest month (with the lowest average sea temperature) is March (8.7°C).
Average daylight in December /
Average sunshine in December
Portbail, France
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and November (Average sunshine: 4h and 0min).
Average sunshine days in December
Portbail, France
- Average sunshine days in December: 7.3 days
The month with the most sunshine days is May (16.8 days).
The month with the least sunshine days is November (5.8 days).
Average UV index in December
Portbail, France
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are January and February (UV index 2).
Average cloud cover in December
Portbail, France
- Average cloud cover in December: 61
The months with the most cloud cover are January, November and December (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Portbail, France
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
