Roscoff monthly weather averages

Average daytime temperature

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

Roscoff average temperature chart (Celsius) Roscoff average temperature chart (Fahrenheit)
Average monthly temperatures in Roscoff (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.6 8.8 10.3 12.3 15.1 17.9 20.1 19.9 18.4 15.4 11.5 9.6
°F 47.5 47.8 50.6 54.1 59.1 64.3 68.2 67.9 65 59.8 52.8 49.3

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.

Roscoff monthly rainfall chart (mm) Roscoff monthly rainfall chart (inches)
Average monthly rainfall in Roscoff (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 124 104 88 65 66 55 49 66 84 95 122 131
inches 4.9 4.1 3.5 2.6 2.6 2.2 1.9 2.6 3.3 3.8 4.8 5.2
Rainy days 21 18 19 16 15 13 12 14 15 17 20 20

Average annual rainfall in Roscoff: 1094.3996833mm (430.9 inches)

Average daily sunshine

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

Roscoff average daily sunshine chart
Average daily sunshine Roscoff
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.3 3.4 4.5 6.4 7.6 8 8.3 7.4 6.1 4.4 3 2.3

Day / night temperatures

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

Roscoff average minimum / maximum temperatures (Celsius) Roscoff average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Roscoff (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 3.9 3.9 4.6 5.9 8.3 10.8 12.8 12.9 11.7 9.7 6.4 4.9
Max °C 8.7 8.9 10.5 12.5 15.2 18.1 20.3 20.1 18.5 15.6 11.7 9.7
Min °F 39.1 38.9 40.2 42.6 47 51.5 55 55.3 53.1 49.5 43.5 40.9
Max °F 43.4 43.5 45.6 48.5 53.2 58 61.8 61.8 59.2 54.7 48.3 45.2

Sea temperature

The graph below shows the average sea temperature.

Roscoff average sea temperature chart (Celsius) Roscoff average sea temperature chart (Fahrenheit)
Average sea temperature around Roscoff in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 11 10.2 10.1 10.8 12.5 14.9 16.8 17.6 16.8 15.3 13.6 12.1
°F 51.7 50.3 50.1 51.5 54.6 58.8 62.3 63.7 62.3 59.6 56.6 53.7

Wind speed

The graph below shows the average wind speed.

Roscoff average winspeed by month (km/h) Roscoff average winspeed by month (mph)
Average wind speed in Roscoff (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 19 19 19 17 16 15 15 16 16 18 19
mph 12 12 12 12 11 10 9 9 10 10 11 12

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.

Roscoff relative humidity averages
Average relative humidity in Roscoff
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
88% 87% 83% 80% 81% 81% 82% 83% 84% 86% 87% 88%

Other monthly averages

UV index Best time to go?

Roscoff weather stats

Roscoff weather statistics
Hottest month: July 20.1°C 68.2°F
Driest month: July 49mm 1.9ins
Sunniest month: July 8.3hrs
Coldest month: January 8.6°C 47.5°F
Wettest month: December 131mm 5.2ins
Warmest sea: August 17.6°C 63.7°F
Map showing location of Roscoff (48.72381, -3.98709) Roscoff map pin © Google

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