Dinan

Brittany Weather in December

Average temperatures, rainfall, sunshine and the best places to visit in Brittany, France in December.

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Saint Malo Carnac Rennes Brest

Planning a trip to Brittany, France this December? Here's what you need to know about the weather:

What to Expect in Brittany in December

Brittany, France is a region in France. December in Brittany generally has temperatures that range from cold to mild, with precipitation levels ranging from moderate to heavy. December is a winter month.

Temperatures

The average highest temperatures fluctuate between cold in Cléry-Saint-André at 9°C (48°F) to mild in Cléden-Cap-Sizun at 13°C (55°F). Nighttime temperatures generally drop to 9°C (48°F) in Cléden-Cap-Sizun and 3°C (37°F) in Cléry-Saint-André.

For specific regional insights in Brittany, France, refer to the map provided below.

Precipitation

In December, precipitation varies across different areas. From moderate rainfall in Lanrelas with an average of 73 mm (2.9 in) to heavy rainfall in Crozon with 163 mm (6.4 in). Looking at the climate data spanning the last 30 years, this month sees the heaviest rainfall of the year in Saint Malo.

Average sunshine

Sunshine is more restricted in many locations in December. Saint Malo sees roughly 66 hours of sunlight. Our weather planner can help you find destinations with more sunshine if needed.

Explore Brittany by month

Pick a month to see the average temperature, rainfall and sunshine in Brittany — and find the best time to visit. (based on Saint Malo)

January10°C (50°F) February11°C (52°F) March12°C (54°F) April14°C (57°F) May17°C (63°F) June19°C (66°F) This monthJuly21°C (70°F) August22°C (72°F) September20°C (68°F) October17°C (63°F) November14°C (57°F) December11°C (52°F)
Best Time to Visit Brittany →

Best Places to Visit in Brittany in December

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Brittany.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Brittany

What is the weather like in December for some of the most popular destinations in Brittany, France?

Temperature range in Brittany (December)

Precipitation variation in Brittany (December)

Saint Malo

In December Saint Malo generally has low temperatures with maximum daytime temperatures around 11°C (52°F), minimum nighttime temperatures around 6°C (43°F) and high monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
14°C (57°F)
11°C (52°F)
10°C (50°F)
Min temperature
9°C (48°F)
6°C (43°F)
5°C (41°F)
Monthly sun hours
81 hours
66 hours
68 hours
Monthly rainfall
105 mm (4.1 in)
107 mm (4.2 in)
87 mm (3.4 in)
Monthly rainy days
18 days
18 days
19 days
Weather conditions
unpleasant
poor
poor
Climate in Saint Malo →

Carnac

In December Carnac generally has low temperatures with maximum daytime temperatures around 12°C (54°F), minimum nighttime temperatures around 7°C (45°F) and high monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
14°C (57°F)
12°C (54°F)
11°C (52°F)
Min temperature
9°C (48°F)
7°C (45°F)
6°C (43°F)
Monthly rainfall
97 mm (3.8 in)
103 mm (4.1 in)
93 mm (3.7 in)
Monthly rainy days
19 days
19 days
20 days
Weather conditions
tolerable
poor
unpleasant
Climate in Carnac →

Rennes

In December Rennes generally has low temperatures with maximum daytime temperatures around 10°C (50°F), minimum nighttime temperatures around 4°C (39°F) and moderate monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
13°C (55°F)
10°C (50°F)
10°C (50°F)
Min temperature
6°C (43°F)
4°C (39°F)
3°C (37°F)
Monthly sun hours
82 hours
68 hours
71 hours
Monthly rainfall
72 mm (2.8 in)
78 mm (3.1 in)
71 mm (2.8 in)
Monthly rainy days
17 days
17 days
18 days
Weather conditions
unpleasant
poor
poor
Climate in Rennes →

Brest

In December Brest generally has low temperatures with maximum daytime temperatures around 12°C (54°F), minimum nighttime temperatures around 7°C (45°F) and high monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
14°C (57°F)
12°C (54°F)
11°C (52°F)
Min temperature
9°C (48°F)
7°C (45°F)
6°C (43°F)
Monthly sun hours
80 hours
63 hours
64 hours
Monthly rainfall
111 mm (4.4 in)
121 mm (4.8 in)
114 mm (4.5 in)
Monthly rainy days
21 days
21 days
22 days
Weather conditions
unpleasant
poor
poor
Climate in Brest →

Dinan

In December Dinan generally has low temperatures with maximum daytime temperatures around 11°C (52°F), minimum nighttime temperatures around 4°C (39°F) and moderate monthly rainfall. So on average the conditions are unpleasant that month.

« November
December
January »
November
December
January
Max temperature
13°C (55°F)
11°C (52°F)
10°C (50°F)
Min temperature
7°C (45°F)
4°C (39°F)
4°C (39°F)
Monthly sun hours
81 hours
66 hours
68 hours
Monthly rainfall
76 mm (3 in)
79 mm (3.1 in)
68 mm (2.7 in)
Monthly rainy days
18 days
18 days
19 days
Weather conditions
unpleasant
unpleasant
poor
Climate in Dinan →

Is your destination not in the list? Have a look at all destinations in Brittany, in France.

In our records: France December extremes

Notable December records observed across cities in France in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • Based on our data, the coldest December night in France dropped to -25°C (-13°F) in Val Thorens on December 29, 2014.

Popular cities in December

Day & night temperatures, rainfall and average weather in Brittany in December.

City Weather Day temp Night temp Rainfall
Saint Malo 11°C (52°F) 6°C (43°F) 107 mm (4.2 in)
Carnac 12°C (54°F) 7°C (45°F) 103 mm (4.1 in)
Rennes 10°C (50°F) 4°C (39°F) 78 mm (3.1 in)
Brest 12°C (54°F) 7°C (45°F) 121 mm (4.8 in)
Dinan 11°C (52°F) 4°C (39°F) 79 mm (3.1 in)
Perros-Guirec 12°C (54°F) 8°C (46°F) 127 mm (5 in)

Brittany weather in December: frequently asked questions

What is the weather like in Brittany, France in December?

Expect poor weather across Brittany, France in December. The popular destination of Saint Malo averages 11°C (52°F) by day and 6°C (43°F) at night during this winter month.

What is the average temperature in Brittany, France in December?

Daytime temperatures in Saint Malo peak at roughly 11°C (52°F) in December, dropping to about 6°C (43°F) overnight.

Does Brittany, France get a lot of rain in December?

Brittany, France sees substantial rainfall in December. Saint Malo typically averages about 107 mm (4.2 in), a mix of wet and dry days, but bring an umbrella.

Is December a Good Time to Visit Brittany, France?

Given the typically poor weather conditions in Saint Malo, December may not be the ideal time to visit Brittany, France.

Generally speaking, the best visiting conditions can be found in July, August and September offering mostly perfect weather in Saint Malo. On the other hand, the weather in January and December tend to be poor.

Interested in more climate information?

We have much more information about the climate in Brittany.

Weather and climate has detailed information for every country in the world. Are you going to France? Get detailed historical weather averages for many cities in France.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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