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
Weather in December
Temperature
In December, Saint-Nazaire experiences a minor shift in meteorological conditions with average high-temperatures marked at a still fresh 10.5°C (50.9°F), closely mirroring the climate in November. Saint-Nazaire's December nights demonstrate minimal variation from the daytime temperatures, with an average of 6.6°C (43.9°F).Humidity
In December, the average relative humidity is 83%.Rainfall
The month with the most rainfall is December, when the rain falls for 15.8 days and typically aggregates up to 77mm (3.03") of precipitation.Snowfall
Months with snowfall in Saint-Nazaire are January, February, April, November and December. The months with the most snowfall are January, February, April, November and December, with an average 1mm (0.04") of accumulated snow.Sea temperature
In December, the average sea temperature is 12.8°C (55°F).Note: It is risky to swim in 12.8°C (55°F). Temperatures beneath 10°C (50°F) induce rapid cold shock and hyperventilation.
Daylight
December has the shortest days of the year in Saint-Nazaire, with an average of 8h and 36min of daylight.On the first day of the month, sunrise is at 08:35 and sunset at 17:20. On the last day of December, sunrise is at 08:55 and sunset at 17:28 CET.
Sunshine
In Saint-Nazaire, the average sunshine in December is 4.7h.UV index
In December, the average daily maximum UV index in Saint-Nazaire is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: A typical high UV index of 3 in December suggests the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
What are December temperatures in Saint-Nazaire?
What is the average humidity in December in Saint-Nazaire?
What is the wettest month in Saint-Nazaire?
How much does it rain in Saint-Nazaire in December?
What is the snowiest month in Saint-Nazaire?
How many days does it snow in December in Saint-Nazaire?
What is the sea water temperature in December in Saint-Nazaire?
What is the month with the shortest days in Saint-Nazaire?
What is the average length of the day in December in Saint-Nazaire?
What time are sunrise and sunset in December in Saint-Nazaire?
How long on average sun shines in December in Saint-Nazaire?
What is the UV index intensity in December in Saint-Nazaire?
Average temperature in December
Saint-Nazaire, France
- Average high temperature in December: 10.5°C
The warmest month (with the highest average high temperature) is July (22.6°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in December: 6.6°C
The months with the highest average low temperature are July and August (14.8°C).
The coldest month (with the lowest average low temperature) is February (4.3°C).
Average pressure in December
Saint-Nazaire, France
- Average pressure in December: 1019mbar
The month with the highest atmospheric pressure is December (1019mbar).
The month with the lowest atmospheric pressure is November (1013.3mbar).
Average wind speed in December
Saint-Nazaire, France
- Average wind speed in December: 21km/h
The windiest month (with the highest average wind speed) is February (21.1km/h).
The calmest month (with the lowest average wind speed) is August (14.1km/h).
Average humidity in December
Saint-Nazaire, France
- Average humidity in December: 83%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are July, August and September (76%).
Average rainfall in December
Saint-Nazaire, France
- Average rainfall in December: 77mm
The wettest month (with the highest rainfall) is December (77mm).
The driest month (with the least rainfall) is July (22mm).
Average rainfall days in December
Saint-Nazaire, France
- Average rainfall days in December: 15.8 days
The month with the highest number of rainy days is January (18.1 days).
The month with the least rainy days is September (9.7 days).
Average snowfall in December
Saint-Nazaire, France
- Average snowfall in December: 1mm
The months with the highest snowfall are January, February, April, November and December (1mm).
The months with the least snowfall are March, May, June, July, August, September and October (0mm).
Average snowfall days in December
Saint-Nazaire, France
- Average snowfall days in December: 0.2 days
The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Saint-Nazaire, France
- Average sea temperature in December: 12.8°C
The best month for swimming (with the highest average sea temperature) is August (18.8°C).
The coldest month (with the lowest average sea temperature) is February (9.7°C).
Average daylight in December /
Average sunshine in December
Saint-Nazaire, France
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Saint-Nazaire, France
- Average sunshine days in December: 13 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is November (10.5 days).
Average UV index in December
Saint-Nazaire, France
- Average UV index in December: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Saint-Nazaire, France
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in December
Saint-Nazaire, 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).
Saint-Nazaire, France
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