This post contains affiliate links. As an Amazon Associate I earn from qualifying purchases. If you click a link and make a purchase, I may receive a small commission at no extra cost to you.
You can grill watermelon on a gas grill, and it turns out smoky, sweet, and absolutely delicious.
It sounds a little unusual at first, but once you try it, you’ll wonder why you didn’t grill watermelon sooner.
The high heat of a gas grill caramelizes the natural sugars in the fruit, giving you a warm, juicy treat with beautiful grill marks.
Whether you’re looking for a unique summer side dish or a fun dessert, grilling watermelon on a gas grill is quick and easy.
In this post, we’ll walk through exactly how to grill watermelon on a gas grill, from picking the right fruit to serving it up.
Let’s fire up that grill.
How to Grill Watermelon on a Gas Grill
Learning how to grill watermelon on a gas grill comes down to a few simple steps, and here’s how to nail it every time.
1. Pick a Firm, Ripe Watermelon
The first step in how to grill watermelon on a gas grill is choosing the right fruit.
You want a watermelon that’s ripe but still firm, not overly soft or mushy.
A firm watermelon holds its shape on the grates, while an overripe one falls apart before it ever gets those nice char marks.
Look for a watermelon that feels heavy for its size and has a deep, hollow sound when you tap it.
2. Cut It Into Thick Slices or Wedges
When you grill watermelon on a gas grill, thickness matters more than you’d think.
Cut the watermelon into slices about one inch thick, or into sturdy wedges if you prefer.
Thin slices tend to turn to mush, so keep them thick enough to hold up to the heat.
You can leave the rind on for easy handling, or trim it off if you want neat, bite-sized pieces.
3. Pat the Surface Dry
Before you grill watermelon on a gas grill, blot the cut sides with a paper towel.
Removing excess moisture helps the surface caramelize instead of steam.
This small step makes a big difference in getting those golden grill marks.
4. Preheat Your Gas Grill to Medium-High
To grill watermelon on a gas grill properly, preheat it to medium-high heat, around 400°F to 450°F.
Clean the grates and brush them with a little oil so the watermelon doesn’t stick.
A hot, clean grill is the secret to those beautiful char lines everyone loves.
5. Grill for 2 to 3 Minutes Per Side
Place the watermelon slices directly on the grates and close the lid.
Grill watermelon on a gas grill for about two to three minutes per side, until you see clear grill marks and the edges start to soften.
Don’t walk away, because watermelon can go from perfectly charred to burnt in seconds.
Flip once, and resist the urge to move it around too much.
Tips for the Best Grilled Watermelon on a Gas Grill
Once you know how to grill watermelon on a gas grill, a few extra tips will take it to the next level.
1. Add a Little Oil or Marinade
Brushing your slices with a light oil helps them grill evenly and prevents sticking.
You can also marinate watermelon in a mix of lime juice, honey, and chili powder before it hits the grill.
This adds a sweet-and-spicy kick that pairs perfectly with the smoky flavor.
2. Season After Grilling, Not Before
Salt, flaky sea salt, or a squeeze of lime works best after you grill watermelon on a gas grill.
Seasoning beforehand can draw out moisture and make the fruit soggy.
A pinch of salt actually enhances the sweetness and makes the flavors pop.
3. Don’t Overcook It
The biggest mistake people make when they grill watermelon on a gas grill is leaving it on too long.
You want it warm and lightly charred, not soft and falling apart.
Pull it off while it still holds its shape for the best texture.
4. Serve It Warm or Chilled
Grilled watermelon on a gas grill tastes amazing straight off the heat.
But you can also chill it and toss it into salads, salsas, or even cocktails.
It’s a versatile treat that works as a side dish, dessert, or appetizer.
What to Serve With Grilled Watermelon
Now that you can grill watermelon on a gas grill, let’s talk about how to enjoy it.
1. Pair It With Feta and Mint
A classic combo is grilled watermelon with crumbled feta, fresh mint, and a drizzle of balsamic glaze.
The salty feta and cool mint balance the sweet, smoky fruit beautifully.
2. Top It With Honey and Chili
For a sweet-heat twist, drizzle honey over your grilled watermelon and sprinkle on chili flakes.
This simple finish makes grilled watermelon on a gas grill feel like a fancy dessert.
3. Add It to a Summer Salad
Chop up your grilled watermelon and toss it into a salad with arugula, cucumber, and goat cheese.
It adds a smoky sweetness that takes an ordinary salad to a whole new level.
4. Blend It Into a Cocktail or Mocktail
Muddle grilled watermelon into a glass with lime and mint for a refreshing summer drink.
The grilling brings out a deeper flavor that plain watermelon just can’t match.
So, Can You Grill Watermelon on a Gas Grill?
You can grill watermelon on a gas grill, and it’s one of the easiest, tastiest ways to enjoy this summer fruit.
With medium-high heat, thick slices, and just a couple of minutes per side, you’ll get smoky, caramelized perfection every time.
Whether you serve it as a side, a dessert, or a topping for salads, learning how to grill watermelon on a gas grill opens up a world of flavor.
So grab a watermelon, fire up the grill, and give it a try.