Plymouth monthly weather averages

Average daytime temperature

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

Plymouth average temperature chart (Celsius) Plymouth average temperature chart (Fahrenheit)
Average monthly temperatures in Plymouth (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.9 7.7 9.4 11.7 14.6 17.6 19.4 19.2 17.2 14.3 10.7 8.9
°F 46.2 45.9 48.9 53.1 58.3 63.6 67 66.6 63 57.8 51.2 48

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.

Plymouth monthly rainfall chart (mm) Plymouth monthly rainfall chart (inches)
Average monthly rainfall in Plymouth (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 154 117 114 76 79 74 74 92 102 126 136 157
inches 6.1 4.6 4.5 3 3.1 2.9 2.9 3.6 4 4.9 5.3 6.2
Rainy days 21 16 17 15 15 13 12 14 15 18 19 20

Average annual rainfall in Plymouth: 1346.934mm (530.3 inches)

Average daily sunshine

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

Plymouth average daily sunshine chart
Average daily sunshine Plymouth
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.1 3 4.3 6.4 7.4 7.8 7.4 6.9 5.6 3.8 2.8 2

Day / night temperatures

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

Plymouth average minimum / maximum temperatures (Celsius) Plymouth average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Plymouth (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 2.8 2.6 3.5 4.9 7.6 10.5 12.2 12.2 10.6 8.6 5.2 3.8
Max °C 8 7.9 9.6 11.9 14.8 17.8 19.6 19.4 17.4 14.5 10.8 9
Min °F 37 36.6 38.2 40.8 45.7 50.8 54 54 51.1 47.4 41.4 38.8
Max °F 41.7 41.4 43.7 47.1 52.2 57.4 60.6 60.4 57.2 52.7 46.4 43.5

Sea temperature

The graph below shows the average sea temperature.

Plymouth average sea temperature chart (Celsius) Plymouth average sea temperature chart (Fahrenheit)
Average sea temperature around Plymouth in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 10.2 9.4 9.2 9.8 11.4 13.6 15.7 16.6 16.1 14.7 13 11.5
°F 50.4 48.9 48.5 49.7 52.6 56.5 60.2 61.9 61 58.5 55.4 52.7

Wind speed

The graph below shows the average wind speed.

Plymouth average winspeed by month (km/h) Plymouth average winspeed by month (mph)
Average wind speed in Plymouth (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 22 21 21 19 18 16 16 16 17 18 20 22
mph 14 13 13 12 11 10 10 10 11 11 12 14

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.

Plymouth relative humidity averages
Average relative humidity in Plymouth
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
91% 88% 85% 82% 81% 82% 82% 84% 87% 89% 89% 91%

Other monthly averages

UV index Best time to go?

Plymouth weather stats

Plymouth weather statistics
Hottest month: July 19.4°C 66.9°F
Driest month: June 74mm 2.9ins
Sunniest month: May 7.4hrs
Coldest month: February 7.7°C 45.9°F
Wettest month: December 157mm 6.2ins
Warmest sea: August 16.6°C 61.9°F
Map showing location of Plymouth (50.37153, -4.14305) Plymouth map pin © Google

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