South Yarmouth (MA) monthly weather averages

Contents

Average daytime temperature

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

South Yarmouth average temperature chart (Celsius) South Yarmouth average temperature chart (Fahrenheit)
Average monthly temperatures in South Yarmouth (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 2.4 2.6 6.1 11.1 16.6 21.9 25.2 24.5 21 16.3 10.5 5.1
°F 36.3 36.7 43 51.9 61.9 71.5 77.3 76.1 69.7 61.3 51 41.2

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.

South Yarmouth monthly rainfall chart (mm) South Yarmouth monthly rainfall chart (inches)
Average monthly rainfall in South Yarmouth (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 100 94 105 99 85 68 68 98 87 90 116 113
inches 3.9 3.7 4.1 3.9 3.4 2.7 2.7 3.9 3.4 3.6 4.6 4.5
Rainy days 12 10 12 11 11 11 9 10 8 9 11 13

Average annual rainfall in South Yarmouth: 1094.3mm (430.8 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in South Yarmouth

South Yarmouth average daily sunshine chart
Average daily sunshine South Yarmouth
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.7 6.5 7.3 7.9 8.7 9.4 9.2 8.8 8.2 7.3 5.4 5.1

Day / night temperatures

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

South Yarmouth average minimum / maximum temperatures (Celsius) South Yarmouth average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in South Yarmouth (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -5.6 -5.4 -0.9 3.2 8.2 13.7 17.3 16.9 13.3 8.3 3.7 -2.7
Max °C 2.6 2.8 6.3 11.3 16.8 22.2 25.4 24.7 21.2 16.5 10.7 5.3
Min °F 21.9 22.3 30.4 37.7 46.8 56.6 63.1 62.4 55.9 46.9 38.7 27.1
Max °F 29.3 29.7 36.9 45 54.5 64.2 70.3 69.4 63 54.3 45 34.3

Sea temperature

The graph below shows the average sea temperature.

South Yarmouth average sea temperature chart (Celsius) South Yarmouth average sea temperature chart (Fahrenheit)
Average sea temperature around South Yarmouth in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.8 4.1 3.9 5.5 9.2 14.1 18.8 20.3 18.4 14.8 11.2 8.3
°F 42.4 39.4 39 41.9 48.6 57.4 65.8 68.6 65.2 58.7 52.1 46.9

Wind speed

The graph below shows the average wind speed.

South Yarmouth average winspeed by month (km/h) South Yarmouth average winspeed by month (mph)
Average wind speed in South Yarmouth (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 20 20 20 18 16 15 15 15 16 18 19
mph 12 12 13 12 11 10 9 9 9 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.

South Yarmouth relative humidity averages
Average relative humidity in South Yarmouth
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
66% 65% 65% 65% 70% 73% 73% 75% 75% 72% 70% 67%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

South Yarmouth weather stats

South Yarmouth weather statistics
Hottest month: July 25.2°C 77.4°F
Driest month: July 68mm 2.7ins
Sunniest month: September 8.2hrs
Coldest month: January 2.4°C 36.3°F
Wettest month: November 116mm 4.6ins
Warmest sea: August 20.3°C 68.5°F
Map showing location of South Yarmouth (41.66678, -70.18474) South Yarmouth map pin © Google

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