Hermanus monthly weather averages
Average daytime temperature
The bar chart below shows the average monthly peak daytime temperatures at Hermanus
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 24.9 | 24.9 | 23.7 | 21.3 | 18.6 | 16.9 | 16.2 | 16.3 | 17.6 | 19.6 | 21.8 | 23.7 |
| °F | 76.8 | 76.8 | 74.6 | 70.4 | 65.5 | 62.4 | 61.1 | 61.4 | 63.7 | 67.2 | 71.2 | 74.6 |
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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 27 | 27 | 31 | 58 | 76 | 95 | 88 | 98 | 55 | 46 | 32 | 29 |
| inches | 1 | 1.1 | 1.2 | 2.3 | 3 | 3.7 | 3.4 | 3.9 | 2.2 | 1.8 | 1.3 | 1.1 |
| Rainy days | 6 | 6 | 7 | 9 | 11 | 12 | 11 | 13 | 10 | 9 | 7 | 7 |
Average annual rainfall in Hermanus: 646.533mm (254.5 inches)
Average daily sunshine
The bar chart below shows the average daily sunshine hours in Hermanus
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hrs sunshine | 10.6 | 9.7 | 8.7 | 7.2 | 6.2 | 5.8 | 6.3 | 6.7 | 7.4 | 8.4 | 9.6 | 10.4 |
Day / night temperatures
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 | 15.1 | 15.3 | 14.1 | 12.1 | 10 | 8.3 | 7.6 | 7.9 | 8.8 | 10.6 | 12.6 | 14.1 |
| Max °C | 25.1 | 25.2 | 23.9 | 21.6 | 18.9 | 17.1 | 16.4 | 16.6 | 17.8 | 19.8 | 22 | 23.9 |
| Min °F | 59.2 | 59.5 | 57.4 | 53.7 | 49.9 | 46.9 | 45.7 | 46.1 | 47.8 | 51.1 | 54.7 | 57.4 |
| Max °F | 68.2 | 68.4 | 66.2 | 62.2 | 57.9 | 54.9 | 53.6 | 54 | 55.9 | 59.4 | 63.1 | 66.2 |
Sea temperature
The graph below shows the average sea temperature.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 20.3 | 20.5 | 19.6 | 18.1 | 16.9 | 16 | 15.5 | 15.4 | 15.7 | 16.4 | 17.7 | 19.4 |
| °F | 68.6 | 68.8 | 67.3 | 64.5 | 62.3 | 60.8 | 59.8 | 59.7 | 60.2 | 61.5 | 63.8 | 66.8 |
Wind speed
The graph below shows the average wind speed.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| km/h | 22 | 21 | 18 | 16 | 15 | 15 | 16 | 17 | 18 | 20 | 22 | 22 |
| mph | 14 | 13 | 11 | 10 | 9 | 9 | 10 | 11 | 11 | 13 | 14 | 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 71% | 71% | 73% | 75% | 76% | 76% | 76% | 76% | 75% | 73% | 71% | 70% |
Other monthly averages
Hermanus weather stats
| Hottest month: | February | 24.9°C 76.8°F |
|---|---|---|
| Driest month: | January | 27mm 1.1ins |
| Sunniest month: | January | 10.6hrs |
| Coldest month: | July | 16.2°C 61.2°F |
| Wettest month: | August | 98mm 3.9ins |
| Warmest sea: | February | 20.5°C 68.9°F |
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