Grahamstown monthly weather averages

Average daytime temperature

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

Grahamstown average temperature chart (Celsius) Grahamstown average temperature chart (Fahrenheit)
Average monthly temperatures in Grahamstown (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 27 27 25.8 23.9 21.8 19.7 19.6 20.4 21.5 22.3 23.8 26
°F 80.7 80.6 78.4 75 71.3 67.4 67.4 68.8 70.7 72.1 74.8 78.7

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.

Grahamstown monthly rainfall chart (mm) Grahamstown monthly rainfall chart (inches)
Average monthly rainfall in Grahamstown (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 54 74 83 51 40 35 39 57 53 76 72 60
inches 2.1 2.9 3.3 2 1.6 1.4 1.5 2.2 2.1 3 2.8 2.3
Rainy days 10 9 10 8 6 5 5 6 7 10 10 9

Average annual rainfall in Grahamstown: 684.933mm (269.7 inches)

Average daily sunshine

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

Grahamstown average daily sunshine chart
Average daily sunshine Grahamstown
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 8.7 8.1 7.4 7.3 7 7 7.5 7.7 7.6 7.8 8.4 9.2

Day / night temperatures

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

Grahamstown average minimum / maximum temperatures (Celsius) Grahamstown average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Grahamstown (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 15.9 16.2 15.2 12.5 9.9 7.7 7.1 8.1 9.6 11.1 12.8 14.4
Max °C 27.3 27.3 26.1 24.2 22.1 20 20 20.8 21.8 22.6 24.1 26.3
Min °F 60.6 61.1 59.3 54.4 49.8 45.8 44.7 46.5 49.3 51.9 55 57.8
Max °F 70.9 71.1 69.1 64.9 60.8 56.8 56.3 57.9 60.3 62.2 65.1 68.5

Sea temperature

The graph below shows the average sea temperature.

Grahamstown average sea temperature chart (Celsius) Grahamstown average sea temperature chart (Fahrenheit)
Average sea temperature around Grahamstown in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 23.5 24 23.7 23 22.2 21 20.2 19.8 19.8 20.2 21.2 22.5
°F 74.3 75.2 74.7 73.3 71.9 69.8 68.4 67.7 67.7 68.4 70.2 72.5

Wind speed

The graph below shows the average wind speed.

Grahamstown average winspeed by month (km/h) Grahamstown average winspeed by month (mph)
Average wind speed in Grahamstown (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 17 16 14 13 13 13 14 15 16 18 17 17
mph 11 10 9 8 8 8 9 9 10 11 11 11

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.

Grahamstown relative humidity averages
Average relative humidity in Grahamstown
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
71% 72% 73% 70% 64% 60% 58% 60% 66% 70% 71% 70%

Other monthly averages

UV index Best time to go?

Grahamstown weather stats

Grahamstown weather statistics
Hottest month: February 27°C 80.6°F
Driest month: June 35mm 1.4ins
Sunniest month: July 7.5hrs
Coldest month: July 19.6°C 67.3°F
Wettest month: March 83mm 3.3ins
Warmest sea: February 24°C 75.2°F
Map showing location of Grahamstown (-33.30422, 26.53276) Grahamstown map pin © Google

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