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You can ripen a watermelon faster by controlling its exposure to ethylene gas, warmth, and a little bit of patience.
While watermelons aren’t climacteric fruits like bananas, they do continue to soften and sweeten slightly after being picked, especially if they were harvested just a bit early.
If you’ve been asking yourself how to ripen a watermelon faster because yours feels a little underripe, you’re in the right place.
In this post, we’ll walk through the best ways to ripen a watermelon faster, what actually works, and what’s just a myth.
Let’s dive in.
How to Ripen a Watermelon Faster: What Actually Works
Learning how to ripen a watermelon faster starts with understanding what a watermelon can and can’t do after it’s been picked.
Unlike peaches or avocados, watermelons don’t produce a surge of ethylene on their own once separated from the vine.
That means you can’t force a rock-hard watermelon into a sugary masterpiece, but you can definitely help an underripe one improve.
Here are the methods that genuinely help when you want to ripen a watermelon faster.
1. Store It With Ethylene-Producing Fruits
One of the simplest tricks for how to ripen a watermelon faster is to pair it with fruits that release ethylene gas.
Bananas, apples, and avocados are all heavy ethylene producers.
Place your watermelon in a paper bag with a ripe banana or apple, and the trapped gas will gently encourage the melon to soften and sweeten.
This won’t turn a completely green watermelon red, but it can make a difference for one that’s only slightly underripe.
2. Keep It at Room Temperature
Cold slows down every ripening process, so if you’re trying to ripen a watermelon faster, get it out of the fridge.
A warm spot around 70–75°F (21–24°C) is ideal for encouraging the natural enzymes inside the melon to keep working.
Direct sunlight isn’t necessary and can actually cause uneven ripening or spoilage.
Just a cozy corner of your kitchen counter will do the job nicely.
3. Flip It Occasionally
This one sounds odd, but gently rotating your watermelon every day or so can help.
The idea is that turning the melon lets whatever sugars and moisture are inside redistribute more evenly.
It won’t perform miracles, but if you’re serious about how to ripen a watermelon faster, it’s an easy habit to build.
Just be careful not to drop it, because a cracked watermelon spoils fast.
4. Give It a Little Time
Honestly, the most reliable answer to how to ripen a watermelon faster is simply to wait a few days.
A watermelon that was picked slightly early will continue to soften and get a bit sweeter over three to five days at room temperature.
After that window, the changes slow down dramatically.
So if you’ve got a few days before you plan to slice it, you’re already ahead of the game.
What Doesn’t Help When You Want to Ripen a Watermelon Faster
Not every internet trick is worth your time, and some can actually ruin your melon.
Here’s what to skip when you’re trying to ripen a watermelon faster.
1. Burying It in Sugar or Salt
Some folks swear by packing a watermelon in sugar or salt to speed things up.
That doesn’t ripen the fruit, it just draws out moisture and makes the outside sticky and weird.
Skip this one entirely if you actually want to enjoy your watermelon.
2. Microwaving or Baking It
Heat can soften a watermelon, but it also destroys the fresh texture and flavor you’re after.
You’ll end up with a mushy, warm mess rather than a sweet, juicy slice.
If you want to ripen a watermelon faster, keep the heat away from it.
3. Leaving It in the Fridge
We mentioned this earlier, but it’s worth repeating because it’s such a common mistake.
Cold temperatures halt the ripening process, so a fridge is the last place an underripe watermelon should go.
Only chill your watermelon once it’s fully ripe and you’re ready to eat it.
How to Tell If Your Watermelon Is Actually Ripening
As you work on how to ripen a watermelon faster, you’ll want to check for signs of progress.
A ripe watermelon has a deep, hollow sound when you thump it.
The bottom spot, often called the field spot, should turn from white or pale green to a creamy yellow.
And the skin should lose that shiny, glossy look and become a bit dull.
If you notice these changes, you’re on the right track.
So, How to Ripen a Watermelon Faster?
You can ripen a watermelon faster by storing it at room temperature with ethylene-producing fruits like bananas or apples.
While watermelons won’t transform from unripe to perfectly ripe off the vine, a slightly underripe one can still improve with warmth, time, and a little patience.
Avoid cold storage, skip the sugar and salt tricks, and give your melon a few days to do its thing.
With these simple steps, you’ll get the most out of your watermelon and enjoy every juicy bite.