Do you have interesting facts on how wind affects South Africa?

Which is the windiest place: Cape Town or Port Elizabeth?
This is a difficult question to answer. What magnitude of wind is more noticeable than others? Possibly we can resolve the issue by referring to the Beaufort Wind Scale. If one uses the Beaufort Wind Scale, wind only really becomes felt by human beings when the wind speed exceeds 1,5 m/s. Cape Town experiences wind of 1,6 m/s or more on 95,6% of the days of the year and Port Elizabeth on 95,7% of the days of the year. The Beaufort Wind Scale classifies any wind greater than 8 m/s as a “Fresh Breeze”. In Cape Town a fresh breeze is experienced on 18,7% of the days in the year (68 days of the year) and in Port Elizabeth on 20,2% of the days in the year (73 days of the year).

How often, and during which months, does the South Easter usually blow in Cape Town?
Southeasterly winds are experienced throughout the year, but are not that frequent when compared to winds blowing from other directions. Southeasterly winds blow about 3% of the time in Cape Town, mainly in August (average wind speed 5 m/s) and October (average wind speed 6 m/s). The strongest southeasterly winds occur in the summer months of December and February. During these months the average speed of the southeasterly winds is 7 m/s, but they occur less frequently during these months.

How windy is South Africa compared with the windiest place on earth?
The windiest place on earth is the coastal part of Antarctica. Cape Denison on Commonwealth Bay in Antarctica has an average wind speed of 20 m/s. The windiest place in South Africa is Cape Point with an average wind speed of 6,9 m/s.

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