Koster monthly weather averages

Contents

Average daytime temperature

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

Koster average temperature chart (Celsius) Koster average temperature chart (Fahrenheit)
Average monthly temperatures in Koster (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 27.6 26.8 25.6 22.7 20.4 17.3 17.9 20.8 24.3 25.8 26.7 27.4
°F 81.8 80.2 78.2 72.9 68.7 63.2 64.2 69.5 75.7 78.5 80 81.4

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.

Koster monthly rainfall chart (mm) Koster monthly rainfall chart (inches)
Average monthly rainfall in Koster (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 135 95 91 67 15 8 4 9 23 57 89 107
inches 5.3 3.7 3.6 2.6 0.6 0.3 0.2 0.4 0.9 2.3 3.5 4.2
Rainy days 14 11 11 7 3 2 1 2 3 8 11 12

Average annual rainfall in Koster: 700.7mm (275.9 inches)

Average daily sunshine

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

Koster average daily sunshine chart
Average daily sunshine Koster
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 9 8.9 8.8 8.8 9.8 9.7 10.4 10.9 10.6 9.7 9.2 9.3

Day / night temperatures

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

Koster average minimum / maximum temperatures (Celsius) Koster average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Koster (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 15.3 14.8 13.1 9.6 5.3 1.9 1.5 4.4 8.6 11.4 13.2 14.5
Max °C 28 27.1 26 23.1 20.8 17.7 18.3 21.3 24.7 26.2 27 27.8
Min °F 59.5 58.6 55.5 49.2 41.5 35.4 34.7 39.8 47.4 52.5 55.8 58
Max °F 70.9 69.6 67.1 61.3 55.4 49.6 49.8 55 61.9 65.8 68.2 70

Sea temperature

The graph below shows the average sea temperature.

Koster average sea temperature chart (Celsius) Koster average sea temperature chart (Fahrenheit)
Average sea temperature around Koster in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 23.6 24 23.7 22.8 21.7 20.5 19.8 19.5 19.7 20.3 21.4 22.7
°F 74.5 75.2 74.6 73.1 71 69 67.6 67.1 67.4 68.6 70.6 72.9

Wind speed

The graph below shows the average wind speed.

Koster average winspeed by month (km/h) Koster average winspeed by month (mph)
Average wind speed in Koster (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 8 7 7 7 7 7 7 8 10 10 10 9
mph 5 5 4 4 4 4 4 5 6 7 6 6

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.

Koster relative humidity averages
Average relative humidity in Koster
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
62% 64% 65% 64% 57% 55% 51% 46% 44% 50% 56% 59%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Koster weather stats

Koster weather statistics
Hottest month: January 27.6°C 81.7°F
Driest month: July 4mm 0.2ins
Sunniest month: August 10.9hrs
Coldest month: June 17.3°C 63.1°F
Wettest month: January 135mm 5.3ins
Warmest sea: February 24°C 75.2°F
Map showing location of Koster (-25.86301, 26.89756) Koster map pin © Google

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