The best time of year to hold a garage sale is when the weather is pleasant. More specifically, the best time to hold a garage sale is on the weekend, from morning until mid-afternoon.
Because people often want to participate in outdoor activities after the winter has passed, many homeowners hold garage sales in the spring. Weather that's too cold or too hot tends to keep shoppers away from sales. Spring is also a good season for a sale because people are in need of new clothes for the coming warmer months.
Weekend garage sales are more successful than weekday sales, with Saturday being the best and most popular sale day. Because buying tapers off in the afternoon, ending the sale between 1 p.m. and 3 p.m. is sufficient.