5 Best Lawn Mowers for Wet & Long Grass of 2024

This lightweight WORX WG779E.2 Cordless Lawn Mower weighs just 11.1 kg, making it a particularly light machine by any standards.

It runs off 2 x 20 V batteries, which come included, and has five cutting heights for tackling different grass lengths. These range from 20 – 70 mm and the higher settings can help get through damp grass. The height is adjusted using a single lever, making it a simple process.

The WORX WG779E.2 can cut damp grass as well as grass that is around 10 cm long. Worx have fitted it with ‘intellicut’ technology which is purposefully designed to adjust the power and speed based on the type of grass.

As a cordless, lightweight mower, this machine naturally doesn’t have the same power as heavier, petrol mowers; however, it’s featured here because it strikes a good balance between effectiveness and weight. If you’re after a particularly manageable mower, this is a great option to consider.

There is a ‘turbo’ mode when more power is required, as well as an ‘eco’ mode to save battery life where possible.

It has a narrow cutting width, of 34 cm, making it best suited to smaller gardens. The grass collector has a relatively small 30 L capacity, so it would need frequent emptying in larger spaces. Nevertheless, the batteries do hold enough power to cover larger distances than you might expect – Worx claim that one charge is enough to mow the majority of UK lawn sizes. Battery life is, of course, somewhat reliant on how hard the mower is having to work through certain terrain.

Overall, the WORX WG779E.2 is one of the best lawn mowers for cutting long and wet grass if having a lightweight, cordless machine is also a priority for you. Whilst it might not get through very long grass, it’s still a good option to consider for most gardens, due to the fact that it’s lightweight, easy to carry, and can tackle damp grass.

Targeted at medium-to-large gardens, the Flymo Speedi-Mo 360C is a powerful lawn mower that can cut through both damp and long grass.

It’s lightweight, at 11.5 kg, with a 1500 W motor and 36 cm cutting width. Even though this isn’t especially large, by lawn-mower standards, it works efficiently and can help cut even a large lawn relatively quickly. There’s rarely a need to go over the same spot twice.

Even when used on longer, thicker grass, the Speedi-Mo 360C produces a clean, uniform cut. This is helped by the five available cutting heights, ranging from 20 – 60 mm. It has a 40-litre grass collector, which is a little on the small side, but a 12-metre power cable – which is slightly better than the more-commonly-found 10 metre offering.

The Speedi-Mo 360C doesn’t claim to cut close to edges, but it still does a good job regardless. Some strimming may be required afterwards, but it does a reasonable job considering it isn’t even a mentioned feature.

Considering the mowers weight, it is generally very easy to manoeuvre around the garden and move in and out of storage. The only thing to be aware of is when pushing it over grass without the motor on – it can scrape along the ground in these instances; however, it’s also light enough to pick up and carry.

All things considered, the Speedi-Mo 360C is one of the best lawn mowers for long and wet grass if you’re after value for money. It performs on a par with more premium models, yet is very reasonably priced. The fact that it is lightweight and yet still sufficiently powerful to cut through long grass is impressive.

Not only does the Bosch Advanced Rotak 650 Lawn Mower have a range of cutting heights and the ability to trim close to lawn edges, it also has a built-in LeafCollect blade for gathering strewn leaves as well.

As a result, this is one of the best lawn mowers for wet and long grass, as well as for creating a neat lawn overall.

There are seven cutting heights available, ranging from 25 – 80 mm, which go higher than the majority of lawn mowers. For this reason, it easily cuts through long grass, and the powerful 1700 W motor helps pull it through. The cutting heights are simple to change via a single lever.

The grass collector is 50 L, which is suitable for small/medium lawns. It has fabric sides with a plastic top. The mesh material is more difficult to clean than an all-plastic box, but it is easier to store. The 41 cm cutting width also makes this mower suitable for small/medium gardens.

Like many Bosch mowers, the Rotak 650 has ‘side combs’ that are designed to cut close the edges. The Rotak 650 achieves this well, meaning it will produce a level cut even up against fences and walls, with limited strimming required afterwards.

In addition, the LeafCollect blade works effectively to scoop up piles of fallen leaves on the lawn, meaning the Rotak 650 is a versatile machine for creating an all-round neat finish in the garden.

The handles are adjustable, so the height can be changed to find a comfortable mowing position. This is done easily, using simple push buttons as opposed to more time-consuming screws. Plus, the handles can be folded to make the mower more compact for storage. When stored, it measures 40 x 70 x 55 cm.

Overall, the Bosch Advanced Rotak 650 has a lot of well-designed features that all work to great effect. For this reason, it’s easy to understand why it has a higher price tag than many other mains-powered models.

Due to its size, it may be too wide for some small gardens, which may not justify the cost if you only have a small lawn. However, it is extremely intuitive and easy to use, and creates a neat, clean cut.

As a powerful grass-cutting machine, the Hyundai HYM430SP 4-Stroke Petrol Lawn Mower is one of the best lawn mowers for wet and long grass.

Its 139 cc engine helps it charge through damp and overgrown grass – something that is particularly useful during the autumn/winter months. The six cutting heights, ranging from 25 – 75 mm, make it possible to tackle long grass without putting too much strain on the engine.

Starting the mower is straight forward, there’s no electric start (which means no battery to charge) but after priming and pulling the recoil it seems to reliably start each time – even when the engine is still warm.

It’s self-propelled, so doesn’t require all the effort to come from you. Something that can be invaluable on sloped, uneven lawns. The self-propelled speed is relatively fast, which some people can find difficult to keep up with, but it’s efficient at getting the mowing done quickly. However, due to the speed, it can be trickier to navigate tight spaces with the engine on.

The HYM430SP has a 42 cm cutting width, so is most suitable for small/medium gardens, based on its size. The 45 L grass collector is relatively small, so in medium gardens it will likely need emptying at least once during the job.

At 27 kg, it isn’t overly heavy for a self-propelled mower, and is relatively manageable – certainly compared to heavier models. Some customers have reported that the plastic wheels can slip on wet ground, so more physical effort may be required in some instances.

Nevertheless, overall it is a well-made, quality machine which is robust and powerful enough to cut through longer grass.

What an amazing age we live in – if you don’t want to mow the lawn, you don’t have to! The McCulloch ROB S400 Robotic Lawn Mower is a fully automatic, robotic lawn mower. All it needs is some simple setting up, and off it goes.

Installation isn’t complicated, but it can take a couple of hours – especially if your garden has a lot of obstacles or an unusual shape. You’ll need to fit the cable around the lawn, to mark the parameters for the S400. This mower is recommended for small/medium gardens of up to 400 m².

The  keypad control for programming different running times and cutting patterns is intuitive to use – it may just take a little time to work out the ideal settings for your specific garden.

It works reliably as a fully automated system, with the robot returning to its charging port on after running for approximately 60 minutes each time. One of the only few problems with the S400 (and all robot mowers) is that you need to have an outdoor power outlet in a suitable position near the lawn.

If you have a sloped garden, the ROB S400 can deal with up to 35% inclines and it’s also not phased by wet grass. Although damp cuttings may eventually clog the blades slightly, and require a brief wash-down, it still copes well and doesn’t require perfectly try conditions.

There are a choice of cutting heights, ranging from 20 – 50 mm, and the clippings are so small and fine that they are barely noticeable on the grass after mowing (the S400 doesn’t collect them).

It’s one of the best lawn mowers for wet grass if you want an automatic, robot machine. The S400 keeps on top of grass length, so it won’t get too long, but you may need to do an initial cut before setting it up so that it’s suitable for the robot’s 50 mm maximum cutting length.