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Rennes in December: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Rennes in December will be like? Take a look at our weather guide for Rennes, based on historical data.
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December

Weather in Rennes in December 2024

OK Weather
Chill
☁️
Cloudy
If you plan to visit Rennes in December, the weather is typically alright, with an average high temperature of +48°F during the day and approximately 3 sunny days. Expect some rainy, though, as there are typically 8 rainy days in the month and around 62 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flights in one click on Avionero.
Good to know:
  • December is usually the wettest month of the year in Rennes;

Average weather

☀️
+48°F
Avg. max. temperature
+19°F
Min.
+64°F
Max.
62 mm
Total precipitation
86%
Avg. humidity
2 m/s
Avg. wind
3 ☀️
Sunny Days
20 ⛅️
Cloudy
8 🌦
Rainy
Our opinion: Rennes has OK weather in December.

Average temperature in Rennes in December

Here are the expected maximum, average and minimum temperatures in Rennes for December based on the historical data.
Last Year
Historical Data

Going from a maximum of +64°F during the day to a minimum of +23°F during the night, the temperature in December averages around +46°F.

The average maximum temperature goes up 48% by the end of the month, compared with the beginning of the month, from +45°F to +64°F.

Is Rennes warm or cold in December?

Rennes is typically chill in December.

Maximum temperatures go down compared to the previous month from +54°F to +48°F. The minimum temperature also goes down from +43°F to +39°F.

Pack a jumper and a jacket as there will be cooler temperatures.

December is one of the coolest months in Rennes, here is the comparison with other months:

Climate in Rennes in December

Rennes weather looks like this, on average, in December and the surrounding months.
NovemberDecemberJanuary
Avg. temperature
+54°F+48°F+46°F
Min. temperature
+23°F+19°F+7°F
Max. temperature
+68°F+64°F+61°F
Rainfall
56 mm62 mm55 mm
Wind
2 m/s2 m/s3 m/s
Humidity
86%86%86%
Air pressure
1014 HPa1016 HPa1017 HPa
Sunny days
433
Cloudy days
192021
Rainy days
787
Snowy days
000

December weather is still as ok as in November. It’s getting colder in December. From +54°F in the day, the average maximum temperature lowers to +48°F. Prepare for more rain. Average rainfall goes from 56 mm to 62 mm. Humidity levels don’t change as the month goes on, averaging around 86%. The average wind speed doesn’t change much during December, staying around 2 m/s. The days becoming less sunny, going from 4 sunny days in November to 3 in December.

January brings much the same weather, it remains ok.

Wind

Wind speed in Rennes in December based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 9 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Rennes is gradually increasing during December, going from 2 m/s to 9 m/s over the course of the month.

Rain

Amount of rainfall in mm during December in Rennes based on historical data.
Last Year
Historical Data
Typically, there is a 42% chance of rain on an average day in December, with total rainfall of approximately 90 mm. The maximum amount of rainfall per day is around 19 mm, which is considered light rain. December is a pretty wet month with over 13 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
December is one of the rainiest months in Rennes, here is a comparison with other months, total mm:
Rennes wettest month is May, where a typical day has a 26% chance of precipitation and 67 mm of rainfall per day. August, on the other hand, is the driest month with a mere 16% chance of precipitation and 42 mm of rainfall per day.

Snow

Amount of snow in mm during December in Rennes based on historical data.
Last Year
Historical Data
Typically, there is a 0% chance of snow on an average day in December, with a total monthly snowfall of approximately 7 mm.

December is one of the snowiest months in Rennes.

Here’s how December is compared with other months in the amount of snow, total mm:

How was the weather last December in Rennes?

This is the weather in Rennes in December 2023:
1 December
☀️
+45°F
2 December
☁️
+42°F
3 December
☁️
+39°F
4 December
☁️
+39°F
5 December
☁️
+42°F
6 December
☁️
+44°F
7 December
☁️
+41°F
8 December
🌫️
+38°F
9 December
☀️
+41°F
10 December
☀️
+42°F
11 December
☁️
+36°F
12 December
☁️
+35°F
13 December
☀️
+35°F
14 December
☁️
+37°F
15 December
☀️
+41°F
16 December
☀️
+44°F
17 December
☁️
+33°F
18 December
🌧️
+50°F
19 December
🌧️
+57°F
20 December
🌧️
+55°F
21 December
☁️
+56°F
22 December
☁️
+59°F
23 December
☁️
+59°F
24 December
☁️
+53°F
25 December
☁️
+55°F
26 December
☀️
+53°F
27 December
☀️
+53°F
28 December
🌧️
+54°F
29 December
☀️
+53°F
30 December
🌧️
+59°F
31 December
☀️
+64°F
In December 2023 Rennes had 10 sunny days, 15 cloudy days, and 5 rainy days. The average maximum temperature was +46°F, with an absolute maximum of +64°F and a minimum of +34°F. The average humidity was 89%, with a maximum of 100% and a minimum of 39%. The average wind speed was 3 m/s, with a maximum of 13 m/s and a minimum of 0 m/s.
Are you planning a trip in December?

Climate Change Over the Years

This is how Rennes climate has changed over the last 43 years.

The climate in Rennes in December has not changed that much over the last 43 years.

The average temperature was the lowest in 2010 (+42°F) and the highest in 2015 (+56°F). The driest year was 1991 with only 3 mm of rainfall, and the wettest year was 1999 with 138 mm.

FAQ

Frequently asked questions about the weather in Rennes in December:

Is December a good time to visit Rennes?

It’s always a good time to visit Rennes, but the weather is changeable in December, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Rennes in December?

Not really, December is not the best time to sunbathe, unless you visit a local solarium.

Is Rennes rainy in December?

Rennes is often rainy in December. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Rennes in December?

Usually, it’s not very sunny in Rennes in December, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in France

Check out the weather for other cities in France.

Monthly weather in Rennes

Source of the data

For this page, we’ve looked at the typical weather in Rennes, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.