Fremantle Doctor

The name was in use as early as the 1870s and was similar to equivalent terms for winds that occurred in South Africa and the West Indies.

[1] During summer months, the Fremantle Doctor consistently blows from the southwest along the southern half of the west coast, starting between 10 am and 3 pm.

The Fremantle Doctor often cools the Perth suburbs by several degrees, whilst nearer the coast the wind can be quite strong, often blowing between 15 and 20 knots (28 and 37 km/h; 17 and 23 mph).

[2] The Fremantle Doctor is strongest in December and January, when the temperature differential between the land and ocean is greatest.

Though October and November are not as warm, the ocean is cooler, resulting in the sea breeze in these months.