When Do Robot Lawn Mowers Go on Sale? Best Times for 2026

9 min read by Megan Hartley Updated November 11, 2026

When do robot lawn mowers go on sale? Most discounts fall into three windows: Prime Day in June or July, Black Friday and Cyber Monday in November, and the late-summer to fall clearance. As of 2026-11-09, the seller guides we read describe these periods as the deepest-discount times, but none publishes a fixed calendar. Spring sales exist, though they are usually smaller.

The short answer

Prime Day (June or July): the main summer event. Dreame’s 2026 official Prime Day sale ran June 23 to 26.
Black Friday and Cyber Monday (November): the broadest holiday discounts, which a UK brand guide says can run to mid-January.
Late summer to fall: clearance of last year’s models after new launches.
Spring: smaller discounts, usually 5 to 15 percent, often for only a few days.

When do robot lawn mowers go on sale during the year

Robot mowers go on sale in three main windows, plus a smaller spring window. Retailers do not publish exact dates far ahead, so the pattern below is a guide to when to watch for deals, not a schedule. Searches for “when do robot lawn mowers go on sale” usually want a month rather than a specific date, and the table gives months.

Mammotion’s US buying guide names Prime Day, Black Friday, Cyber Monday, Memorial Day, Labor Day and the late-summer to fall clearances as the periods with the deepest cuts. It is a brand page, so read the list as a seller’s view rather than an independent calendar.

Window	Typical timing	What the seller guides say
Prime Day	June or July	Dreame calls it the standout early-season window
Black Friday and Cyber Monday	November, to mid-January in the UK guide	Up to 50% off selected models (Mammotion UK)
Late-summer to fall clearance	Late summer to fall	Drops of 20% to 40% on old stock (Mammotion UK)
Spring pre-season	March to May	5% to 15%, often around Easter or early May (Mammotion UK)

Prime Day in June or July is the early-season window

Prime Day is the main summer sale, and Dreame calls it the standout early-season window because a mower bought then still has months of mowing ahead. Dreame’s own 2026 early deals ran June 5 to 22 with up to $600 off in the US, and its official Prime Day sale ran June 23 to 26. For the summer part of “when do robot lawn mowers go on sale,” Prime Day is the clearest answer in the sources we read.

The logic is simple. A mower bought in early summer keeps the grass trimmed through the rest of the growing season, while a mower bought at year-end sits idle until spring. Mammotion’s US guide also points to Memorial Day weekend as a discount window, though it gives no percentage for it.

Both sellers are describing their own promotions. Treat the June dates as a pattern to watch for next year, not a promise.

Black Friday and Cyber Monday bring the broadest discounts

Black Friday and Cyber Monday bring the broadest holiday discounts. Mammotion’s UK guide says these sales deliver the deepest discounts of the year, with up to 50% off selected models and a window from mid-November to mid-January. If you are checking “when do robot lawn mowers go on sale” for the holidays, this is the window to watch.

Two robot lawn mowers of different sizes parked on grass beside a stone patio; when do robot lawn mowers go on sale depends on the model — Models of different size often go on sale on different dates.

Dreame describes year-end sales as bringing broad discounts, but it gives no dollar or percentage figure. Selection also shrinks the longer you wait. Mammotion’s US guide says December can still carry some discounts, though inventory may be limited.

Two points follow from these sources for anyone shopping in November. The window is wide, so you do not have to buy on a single day. The largest percentage claims come from sellers, so compare any sale price with the same model’s earlier price on the retailer page, and run through our questions to ask before buying a robot mower first.

Late-summer and fall clearance sell prior-year models

Late-summer to fall clearance usually cuts prices on last year’s models, because new launches push retailers to clear stock. Mammotion’s UK guide puts those drops at 20% to 40%, though it does not show the data behind that range. For older models, the answer to “when do robot lawn mowers go on sale” is usually late summer or fall, after the next launch.

Mammotion’s US guide says discounts on older models follow new launches, and dealers often mark down previous-generation stock within weeks. The UK guide adds that autumn often marks the release of new generations, which makes the previous year’s units much cheaper.

Dreame agrees that end-of-season clearance is where the headline discounts get deepest, but it gives no percentage. It also warns that a mower bought in September will sit unused until spring, so the lower price comes with a cost in mowing time.

What 2025 deals looked like, model by model

In the early Black Friday round that Bob Vila covered in late November 2025, the five robot mowers in the table below were 23% to 42% under list price. These are past-season discounts, not current ones.

Model	Discount in the late-November 2025 round
Yardcare V100 Smart	40.0% off
Gardena Sileno Flex	32.1% off
Husqvarna Automower 4G (0.4 acre)	28.7% off
Segway Navimow Wire-Free (0.74 acre)	23.1% off
Eufy E18 Wireless (0.3 acre)	42.3% off

The table shows how much the size of a cut varies by model. The Eufy E18 and the Yardcare V100 had the largest percentage drops among these five, and the Navimow model had the smallest. For the absolute prices behind each tier, see our guide to how much a robot lawn mower costs. Bob Vila’s article is dated November 28, 2025, and does not give a start or end date for each deal, so read the figures as a sign of how deep early cuts went. They show the depth of past sales, though they do not settle “when do robot lawn mowers go on sale” for 2026.

Heads up

The discounts in this table are from 2025 and will not match current listings. Check the retailer page on the day you buy.

Spring sales are smaller and shorter

Spring sales are smaller. Mammotion’s UK guide puts them at 5% to 15%, mostly around Easter or the first May bank holiday, and says launch discounts often last only several days. As an answer to “when do robot lawn mowers go on sale,” spring is the weakest window for big savings.

Mammotion’s US guide makes a similar point: discounts are rare at a new model’s launch, and deals in March to May tend to be short. The sources do not fully agree on spring. Dreame calls early spring a good time to buy, before the grass grows quickly, while the UK guide says June and July are usually when prices are highest because demand peaks.

Should you wait for a sale or buy now

Wait for a sale only when the mower can sit until the season starts. If you want a full season of mowing, an early-summer deal is usually the better trade, since a mower bought in September stays unused until spring. Deciding between a sale and buying now comes down to your start date, and our guide to how to choose a robot mower for your lawn size helps you pick the model before the sale starts.

A white and grey robot lawn mower on a green lawn in a backyard with a wooden fence — Check the lawn size before you pick a model to buy on sale.

Dreame makes the same trade-off. It says the deepest discount is not always the best value, because an early-season purchase costs more but gives a full season of mowing, while a year-end purchase saves more but leaves the mower parked until spring.

Our reading is that the decision comes down to two numbers: the price you are willing to pay and the date you need the mower running.

If the sale price is in line with the 2025 pattern above and the sale falls before your mowing season, buy. If you need the mower before spring, waiting past the clearance window costs you mowing time. Check the retailer’s price history before accepting any headline percentage, because the seller guides do not publish the baseline they discount from. So the practical answer to “when do robot lawn mowers go on sale” is a window of weeks, not a single day. If you are still unsure that a mower pays off, read whether robot lawn mowers are worth it before you chase a discount.

Frequently asked questions

When do robot lawn mowers go on sale for the lowest price?

Seller guides point to late-summer to fall clearance and Black Friday as the lowest-price windows. Dreame says end-of-season clearance is where headline discounts get deepest. None of the sources promises a fixed low price, so compare the sale price with the model’s earlier price.

Is Black Friday the best time to buy a robot lawn mower?

When do robot lawn mowers go on sale for holiday shoppers? Black Friday is one of the strongest windows, though a brand guide is the source. Mammotion’s UK guide says these sales bring the deepest discounts of the year, with a window from mid-November to mid-January. Check the price history for the exact model before you buy.

Do robot lawn mowers go on sale in spring?

Yes, but usually by a smaller amount. The Mammotion UK guide puts spring discounts at 5% to 15%, mostly around Easter or early May, and says launch deals often last only several days.

How much can you save on a robot mower during a sale?

In the late-November 2025 round, Bob Vila listed cuts of 23% to 42% on five models. Dreame’s 2026 early deals offered up to $600 off in the US. Savings depend on the model, the year and the retailer.

Sources

Best Time to Buy a Robot Lawn Mower (Dreame Yard Care, seller guide dated June 5, 2026): Prime Day window, 2026 deal dates, clearance timing.
Early Black Friday Robot Mower Deals on Amazon (Bob Vila, dated November 28, 2025): 2025 list and sale prices for five models.
Best Time to Buy Robotic Lawn Mower (Mammotion US, seller guide): sale windows and the launch cycle for older models.
When is the best time to buy a lawn mower (Mammotion UK, seller guide): seasonal discount ranges and sale durations.