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The Short Answer
Almost everybody buys a mower in April, which is exactly why April is the worst month to buy one. Retailers have no reason to discount a mower while the grass is already growing. They have every reason to discount it in September, when the floor space is needed for snowblowers and next year's models are on a boat. The gap between those two moments is worth about a quarter of the price.
We checked Amazon's entire current lawn mower lineup the morning we wrote this. 34 mowers. 25 of them were discounted, the cuts averaged 25%, and the deepest was 41% off. For comparison, we ran the identical check on YETI coolers a few days earlier and found exactly one discount out of 26 products. Same store, same week, completely different picture.
That's not luck, that's the calendar. Mowing season is ending, and a mower on a shelf in October is a mower taking up the space a snowblower needs. Retailers know a mower is a once a decade purchase that nobody makes in the fall, so the only way to move the last of the model year is to make the price silly.
The conventional advice, including the advice this very page used to give, is to shop the spring sales in April and May. That advice confuses activity with value. There genuinely are more mower promotions running in spring than at any other time. They're also shallower, because everyone selling one knows you need it this weekend.
So the real question isn't when mowers go on sale. It's whether you can wait. If your current mower will survive one more season, buying in September saves you roughly a quarter. If it won't, the rest of this page is about making the best of a worse month.
The Full Calendar
Every window worth waiting for, ranked by how much you save
Bar widths show how far prices move in each window relative to the best one. These are shelf prices on walk behind mowers, not dealer pricing on riding equipment, which follows different rules.
The deepest and broadest discounting of the year, and it happens when nobody is looking. Retailers need the floor space for snowblowers and the incoming model year, and a mower that doesn't sell now sits in a warehouse until March. We counted 25 of 34 mowers discounted while writing this, averaging 25% off.
Battery platforms and cordless systems get cut hardest here, because they compete with every other cordless tool for the same gift budget. Nobody is thinking about grass in November, which is precisely why the prices are good.
Strong on electric mowers and especially on battery and charger bundles, where the discount is really on the batteries. Weaker on gas. The October event lands close enough to clearance that the two blur together.
A real promotional weekend for outdoor power equipment, and the only decent window inside the mowing season itself. You're still buying spring stock at close to spring prices, but the sale is genuine.
Whatever survived the fall gets moved out before spring stock lands. The selection is thin and picked over, and you'll be storing the thing for two months, but the prices are the second best of the year.
Peak demand, and the month almost everybody actually buys. There are more mower promotions running now than at any other point in the year and they're all shallower, because every seller knows you need it this weekend rather than next season.
Standing in a store with a lawn full of grass is the single most expensive way to buy a mower. You pay list, you take whatever is in stock, and you find out in three years that you bought the wrong deck size. Decide before you need to.
