Worst time to shop at Costco may be when you least expect it, with one day drawing the most crowds
Costco crowds peak on Sunday afternoons, but Reddit users and experts reveal the best weekday windows to shop at the box-big store with fewer lines and fuller shelves.

TL;DR
- Sunday afternoons (11 a.m. to 2 p.m.) are considered the worst times to shop at Costco due to large crowds.
- Weekdays, especially Tuesdays and Wednesdays, are generally better for shopping, with earlier in the day being preferable.
- Shopping early in the morning or late in the evening on weekdays (e.g., after 6:30 p.m. on a weeknight) can lead to fewer crowds.
- To ensure fully stocked shelves, aim for Tuesdays or Wednesdays as supplies are most likely replenished then.
- High shopper volume is likely the day before a holiday, especially if the store is closed on that holiday.