he best sailing season in Geraldton is from December to February (inclusive). During this period the area gets regular strong sea breezes. Typically these are of the order of 18 - 25 knots. This means that sailors (at least wave sailors) are using 4.5 - 5.0 sq m sails. Slalom sailors use whatever Slalom Sailors use. The sea breeze comes in at anywhere between 10 am and 3 pm, usually at about 11am. The typical scenario starts with a land breeze (offshore) blowing during the night, and a sudden wind as the sea breeze comes in. This sea breeze comes from the S/W, which is cross shore for the main sailing area. A description of the weather patterns that are associated with a good sea breeze can be seen here.

It is popularly believed that the wind is a little stronger in Geraldton than in Lancelin or Perth.

Sea Breeze has a great web page that shows the forecast and current conditions for Geraldton.

This page has a lot of useful information about Geraldton weather.