Mowing Wet Grass – All You Need To Know

The cool breeze right after a torrential downpour is tempting to mow the lawn. But, mowing wet grass has its good and bad side on both the person operating the mower and the grass itself. Mowing dewy grass can cause physical harm to the mower operator or family members.

For example, the American Academy of Pediatrics estimates that over 7000 children visit the ER section in hospitals for injuries and accidents arising from lawn mowers each year. With the current economic status, unnecessary expenses should be avoided at all costs. As such, it’s important to avoid using lawnmower in situations that are likely to harm those nearby, yourself, or the mower itself.

Should You Mow Wet Grass?

Despite the accidents, sometimes it’s recommended mowing when the grass is wet. However, whether or not to mow wet grass largely depends on how wet the grass is. Some people find it simple to mow their lawns early in the morning when the grass is still soaked in dew. While this is a common practice, it’s not recommended. The best thing is to mow when the grass is dry or slightly wet.

Reasons Why It’s Not Recommended To Cut The Grass When Wet

It Reduces The Sharpness Of Mower Blades

Cutting wet grass tends to make the blades blunt. As a result, the mower uses more power to cut the grass compared to when it is dry.

The lawn will have uneven sections.

Due to the heaviness of the water on the grass, it drops to the ground making it difficult for the mower blades to cut it. Therefore, when the grass dries and stands, the lawn will have patches of uncut or poorly cut grass.

Impacts The Health Of The Grass

Due to the heaviness of the grass blades, the mower will leave uneven grass edges, which is a recipe for health problems such as moulds. 

Grass Clumps Reduce The Power Of The Mower

Wet grass bundles together like a ball when mowing. When these balls accumulate beneath the mower blades, the mower does not operate at its optimum. When this happens repeatedly, the overall performance of the mower is reduced over time. 

It Reduces The Service Life Of Your Mower

The mower is made of metallic parts, and their continued exposure to water reduces their shelf life due to rust. Also, when the water gets inside the gasoline tank, it will damage the mower’s engine. 


Also, big clumps mat down suffocating the underneath grass. This leads to the grass turning yellowish.

What Happens When You Mow Wet Grass?

It Leaves A Bad Shape On Your Lawn

The heaviness of wet grass leads to uneven cuts by the mower, consequently leaving an unequal height of the lawn.

May Create Ruts In Your Lawn

Wet grass means wet and unstable ground. Therefore, as the mower vibrates through the lawn, its wheels cause ruts that later collect water and may need to be refilled. It also disturbs the unstable grassroots.

Increases The Risk Of Hurting Yourself

Mowing wet grass presents a more significant hazard to your safety compared to when mowing dry grass. For instance, in a wet lawn, it’s easy to slide or lose the grip on the mower causing harm to you or your loved ones. These risks are escalated when cutting wet grass on sloping lawns.

How To Mow Wet Grass

According to The Washington Post, “it’s always best to let the grass dry before mowing it.” But, “If the grass stays wet for long periods and continues to grow, it’s OK to mow the grass to keep it from growing too tall and going to seed.”

If you decide it’s time, follow these simple steps:

Use A Silicone Lubricant

With wet grass clippings hard to remove from the mower after the job is done, spray a silicone lubricant on the mower’s belly.

Avoid Blunt Mower Blades

Sharp blades ensure the work is done quickly and with less effort. Wet grass has a toll on the sharpness of the mower blades. To maximum same-length cut of the grass, ensure the blades are at their sharpest. Also, inspect the blades for cracks and straightness for optimum performance.

Limit Gasoline Evaporation Using A Fuel Stabilizer

When moisture finds its way into the gasoline tank, it can cause huge damages to the mower engine. To prepare the mower for wet grass cutting, use a fuel stabilizer to limit gasoline evaporation and repel water.

Minimize Clogging By Raising The Mower Deck


Mowing dewy grass is bound to gather on the belly of your mower. To avoid this, raise the mower deck to the highest possible settings. This may not bring the desired cut but will keep the grass height in check until it dries.

Take It Slow

These are not your normal lawn mowing conditions. Therefore, to cut the grass, reduce your speed, preferably up to 50 percent since the mower blades are handling a more laborious task. To reduce the stress on the mower blades, place the mower in a way that the blades cut through an uncut section and the other half is in the cut section. Also, to increase the chances of reaching even the bentgrass blades, mow in two or more directions.

Don’t Mulch Or Bag

Wet grass is difficult to mulch or bag. Mulching blades have curves and multiple cutting positions. This makes the grass to stay more on the underside on the mower. To reduce the strain on the mower, discharge the grass clippings from the side.

Avoid Corded Electric Mowers

Electricity and water don’t mix. To avoid electric shocks and its effects, avoid cutting wet grass with an electric mower.

Frequently Asked Questions On Lawn Mowing

Can You Cut Grass In The Rain?

No. mowing in the rain negatively affects the mower’s performance. Also, cutting grass in the rain is not suitable for your health. 

How Long Should I Wait To Mow The Grass After It Rains?

If you care about your lawn and you don’t want to mow when the grass is still wet, wait until the grass has thoroughly dried or until the moisture content has dropped considerably. The dryness can be measured by walking in the lawn and not wetting your shoes. However, how long the grass takes to dry after the rain depends on the prevailing weather condition.

Can You Cut Grass After It Rains?

Yes. However, it depends on the time it takes for the grass to dry up or if you would want to mow wet grass.

Can I Mow Wet Grass?

If possible, it’s better to avoid it. Mowing dry grass results in a finer cut compared to cutting wet grass.

What Is The Best Time To Mow Your Lawn?

The best time to mow your lawn is when the grass is dry or with mild moisture from the morning dew. Therefore, the best time to mow your lawn is before midday, preferably after 8 am and before 10 am.

Mowing Wet Grass - All You Need To Know
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Mowing Wet Grass - All You Need To Know
Should you mow wet grass? What happens when you mow wet grass? We have also discussed how to mow wet grass to avoid injuring yourself or damaging your lawnmower.
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