Rennes monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Rennes

Rennes average temperature chart (Celsius) Rennes average temperature chart (Fahrenheit)
Average monthly temperatures in Rennes (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8 9 11.6 14 17.4 20.9 23.4 22.8 20.7 16.5 11.4 8.7
°F 46.3 48.2 52.8 57.2 63.4 69.6 74 73.1 69.3 61.6 52.5 47.6

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Rennes monthly rainfall chart (mm) Rennes monthly rainfall chart (inches)
Average monthly rainfall in Rennes (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 65 58 54 45 63 47 40 43 50 64 73 66
inches 2.6 2.3 2.1 1.8 2.5 1.9 1.6 1.7 2 2.5 2.9 2.6
Rainy days 18 16 16 14 16 12 11 12 12 15 17 17

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Rennes

Rennes average daily sunshine chart
Average daily sunshine Rennes
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.5 3.7 5 6.5 7.4 8.2 8.7 7.7 6.5 4.8 3.2 2.5

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Rennes average minimum / maximum temperatures (Celsius) Rennes average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Rennes (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 2.3 2.7 3.7 5.4 8.4 11.3 13.2 13 11.3 8.6 5.1 3.2
Max °C 8.1 9.2 11.8 14.2 17.7 21.1 23.6 23.1 21 16.7 11.6 8.8
Min °F 36.1 36.8 38.6 41.7 47 52.3 55.8 55.3 52.3 47.4 41.1 37.8
Max °F 41.4 42.6 45.9 49.6 55.4 61.2 65.1 64.4 61 54.7 46.9 42.8

Sea temperature

The graph below shows the average sea temperature.

Rennes average sea temperature chart (Celsius) Rennes average sea temperature chart (Fahrenheit)
Average sea temperature around Rennes in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 10 8.9 8.8 9.9 11.9 14.4 16.4 17.4 16.9 15.6 13.6 11.6
°F 50 48 47.9 49.8 53.4 57.9 61.6 63.3 62.5 60 56.5 52.8

Wind speed

The graph below shows the average wind speed.

Rennes average winspeed by month (km/h) Rennes average winspeed by month (mph)
Average wind speed in Rennes (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 16 16 16 16 15 14 13 13 13 13 15 16
mph 10 10 10 10 9 9 8 8 8 8 9 10

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Rennes relative humidity averages
Average relative humidity in Rennes
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
89% 86% 81% 77% 78% 77% 76% 78% 79% 84% 86% 87%

Other monthly averages

UV index Best time to go?

Rennes weather stats

Rennes weather statistics
Hottest month: July 23.4°C 74.1°F
Driest month: July 40mm 1.6ins
Sunniest month: July 8.7hrs
Coldest month: January 8°C 46.4°F
Wettest month: November 73mm 2.9ins
Warmest sea: August 17.4°C 63.3°F
Map showing location of Rennes (48.11198, -1.67429)

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