By late October, you may find the steepest discounts (up to 70% off), though selection will be very limited. The Best Time for Selection and Trends
Best Time to Buy Patio Furniture | The Cover Blog - Coverstore
If you want first choice of the latest styles, colors, and configurations, you should shop earlier in the year.
Retailers slash prices by 50% to 70% to clear floor space for incoming fall and winter inventory.
This is a major sales event where many stores offer significant markdowns on existing outdoor stock.