Average monthly wind speed in St James

Here you can view the typical wind conditions throughout the year in St James, (Western Cape), South Africa.

Throughout the year, wind speeds in St James average from 3 m/s (6 knots) and increase to 6 m/s (12 knots).

With an average wind speed of 3 m/s (6 knots) in May and June, it experiences a fair and typical breeze. However, conditions can vary between days, and stronger winds may occasionally occur. On a day with 3 m/s (6 knots), leaves and small twigs are constantly in motion, and a flag would be clearly waving. This translates to roughly 11 km/h or 6.7 mph. Most days are suitable for spending time outdoors.

In contrast, wind speeds average 6 m/s (12 knots) during January; these months are known as the windiest. Most days are quite windy, with small branches moving and occasional difficulty walking against the wind. Loose objects may be blown away. The measurement represents 21.6 km/h or 13.4 mph. There may still be stronger gusts or calmer moments, but strong winds are typical.

For more detailed information about St James’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our St James climate page.