The bar chart below shows the average monthly peak daytime temperatures at Postmasburg
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 32.3 | 30.8 | 28.6 | 24.7 | 21.1 | 17.8 | 18.3 | 20.6 | 24.6 | 27.3 | 29.8 | 31.6 |
| °F | 90.2 | 87.5 | 83.5 | 76.4 | 69.9 | 64 | 64.9 | 69.1 | 76.3 | 81.1 | 85.6 | 88.9 |
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.
The graph below shows the average rainfall and number of rainy days per month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 47 | 66 | 67 | 43 | 10 | 7 | 5 | 6 | 7 | 19 | 27 | 36 |
| inches | 1.8 | 2.6 | 2.6 | 1.7 | 0.4 | 0.3 | 0.2 | 0.2 | 0.3 | 0.8 | 1.1 | 1.4 |
| Rainy days | 6 | 8 | 7 | 6 | 2 | 2 | 1 | 2 | 2 | 4 | 5 | 6 |
Average annual rainfall in Postmasburg: 333.866mm (131.4 inches)
The bar chart below shows the average daily sunshine hours in Postmasburg
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hrs sunshine | 11.3 | 10.1 | 9.6 | 9.4 | 9.5 | 9.3 | 10 | 10.7 | 10.5 | 10.9 | 11.5 | 12 |
The graph below shows the daily range of temperatures for each month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min °C | 17.5 | 17.1 | 14.9 | 10.6 | 5.6 | 2.1 | 1.5 | 3.6 | 7.8 | 11.2 | 14.1 | 16.2 |
| Max °C | 32.7 | 31.2 | 29 | 25 | 21.5 | 18.2 | 18.7 | 21.1 | 25.1 | 27.7 | 30.2 | 32 |
| Min °F | 63.5 | 62.7 | 58.7 | 51.1 | 42 | 35.7 | 34.7 | 38.4 | 46 | 52.1 | 57.3 | 61.2 |
| Max °F | 77.2 | 75.4 | 71.4 | 64 | 56.3 | 50.2 | 50.2 | 54.1 | 61.5 | 66.9 | 71.8 | 75.4 |
The graph below shows the average sea temperature.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 22 | 22.2 | 21.7 | 20.7 | 19.7 | 18.6 | 17.9 | 17.7 | 18 | 18.7 | 19.8 | 21.1 |
| °F | 71.6 | 71.9 | 71 | 69.3 | 67.4 | 65.5 | 64.3 | 63.9 | 64.4 | 65.6 | 67.6 | 70 |
The graph below shows the average wind speed.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| km/h | 9 | 8 | 7 | 6 | 7 | 7 | 8 | 8 | 9 | 10 | 10 | 10 |
| mph | 6 | 5 | 5 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 6 |
A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.
The graph below shows the average relative humidity.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 40% | 48% | 52% | 55% | 53% | 54% | 49% | 43% | 38% | 38% | 39% | 39% |
| Hottest month: | January | 32.3°C 90.1°F |
|---|---|---|
| Driest month: | July | 5mm 0.2ins |
| Sunniest month: | August | 10.7hrs |
| Coldest month: | June | 17.8°C 64°F |
| Wettest month: | March | 67mm 2.6ins |
| Warmest sea: | February | 22.2°C 72°F |