Multiple yacht clubs across Perth hold invitational racing throughout the winter season (May to September). You don't need to be a member of the yacht club to participate, but you are required to register.

Here is a list of some Winter Series racing available for the Optimist class:

Fremantle Sailing Club 
Huck Scott Winter Series 2024

1. Sat 25 May
2. Sat 22 June
3. Sat 20 July
4. Sat 3 August (reserve day)
5. Sat 17 August 

Hillarys Yacht Club
Winter Series 2024

1. Sat 1 June
2. Sat 15 June
3. Sat 13 July
4. Sat 27 July
5. Sat 10 August

Nedlands Yacht Club
Winter Series 2024

1. Sun 16 June
2. Sun 21 July
3. Sun 18 August
4. Sun 15 September

Royal Freshwater Bay Yacht Club
Winter Series 2024 

1. Sun 26 May
2. Sun 9 June
3. Sun 23 June
4. Sun 21 July 
5. Sun 11 August
6. Sun 8 September

Royal Perth Yacht Club
Frostbite Series 2024

1. Sun 26 May at 2pm
2. Sun 9 June
3. Sun 23 June
4. Sun 7 July
5. Sun 21 July
6. Sun 4 August
7. Sun 18 August
8. Sun 1 September

South of Perth Yacht Club
Winter Series Invitational 2024

1. Sun 19 May at 1pm
2. Sun 9 June
3. Sun 23 June
4. Sun 21 July
5. Sun 11 August
6. Sun 25 August