How Long Does A Watermelon Take To Ripen

A watermelon takes about 80 to 100 days to ripen after planting, depending on the variety and growing conditions.
 
But the exact timing isn’t the same for every melon, since factors like weather, soil, and the specific type you’re growing all play a role in how long a watermelon takes to ripen.
 
If you’re asking how long does a watermelon take to ripen, the honest answer is that it varies, though most watermelons are ready somewhere between 70 and 90 days from transplanting.
 
In this post, we will look at how long a watermelon takes to ripen, the signs that tell you it’s ready, and what you can do to speed things up or slow things down.
 
Let’s dig into what actually happens as a watermelon ripens on the vine.
 

How Long Does a Watermelon Take to Ripen?

How long a watermelon takes to ripen depends mostly on the variety you planted and the climate you’re growing in.
 
Here’s what to expect based on the type of watermelon:
 

1. Watermelon Varieties and Their Ripening Times

Smaller “icebox” watermelons often ripen in about 70 to 80 days.
 
Standard round and oblong varieties typically take closer to 80 to 90 days, while giant cultivars can take up to 100 days or more.
 
So when you ask how long does a watermelon take to ripen, the variety label on your seed packet is your best starting point.
 

2. Days to Ripen Counted From Planting

Most growers count those days from when the seed germinates or the seedling goes into the ground, not from when the fruit first appears.
 
That means a watermelon you planted in late spring could take roughly 80 days to ripen before it’s ready to pick.
 
Knowing this helps you plan, especially if you want a watermelon to ripen right around a certain date.
 

3. Warmth and Sunlight Speed Things Up

Watermelons love heat, and the warmer the weather, the faster a watermelon tends to ripen.
 
Full sun and temperatures between 70°F and 90°F keep the vine productive, which shortens how long a watermelon takes to ripen.
 
Cool, cloudy stretches will slow the process down, so a watermelon in a chilly summer may take longer than expected to ripen.
 

4. Soil and Water Make a Difference Too

Well-drained, nutrient-rich soil helps a watermelon ripen on schedule.
 
Consistent watering early on supports growth, but cutting back slightly as the fruit matures can help a watermelon ripen without splitting.
 
Too much nitrogen, on the other hand, gives you lots of vine and leaves but slows how long a watermelon takes to ripen.
 

Signs a Watermelon Is Ripe and Ready

While the calendar gives you a rough idea of how long a watermelon takes to ripen, the melon itself gives you clearer signals.
 
Here’s what to look for:
 

1. The Tendril Nearest the Stem Dries Out

The curly tendril right next to where the fruit attaches turns brown and dries up when a watermelon is ripe.
 
If that tendril is still green, the watermelon likely needs more time to ripen.
 

2. The Underside Turns Creamy Yellow

Flip the watermelon over and look at the spot where it rested on the ground.
 
A ripe watermelon shows a creamy yellow or pale orange patch, not white or green.
 
That field spot is one of the most reliable clues that a watermelon has fully ripened.
 

3. A Hollow, Deep Sound When Thumped

Give the watermelon a firm thump with your knuckles.
 
A ripe watermelon sounds hollow and deep, while an unripe one sounds higher and more solid.
 
It takes a little practice, but this trick is a favorite among gardeners judging how long a watermelon takes to ripen.
 

4. The Skin Loses Its Shine

A watermelon that’s ready to ripen fully takes on a duller, matte finish instead of a glossy one.
 
The rind also gets harder and resists your fingernail more.
 

How to Help a Watermelon Ripen Faster

If your growing season is short, you can nudge things along so a watermelon ripens before the cold arrives.
 
Here are a few simple ways to shorten how long a watermelon takes to ripen:
 

1. Choose a Short-Season Variety

Pick cultivars bred for cooler climates, since these are known to take fewer days to ripen.
 

2. Maximize Sun and Heat

Plant in the sunniest spot you have and use black plastic mulch to warm the soil.
 

3. Prune Extra Growth

Trimming excess vines directs the plant’s energy into the fruit, helping a watermelon ripen sooner.
 

4. Reduce Water Near Harvest

Easing off watering as ripening nears concentrates sugars and helps the watermelon finish ripening cleanly.
 

So, How Long Does a Watermelon Take to Ripen?

A watermelon takes roughly 80 to 100 days to ripen, though the exact time depends on the variety, the weather, and how you care for the vine.
 
Smaller types often ripen in about 70 to 80 days, while larger ones can take 90 days or more to ripen fully.
 
By watching the tendril, the field spot, and the sound of the thump, you’ll know exactly when your watermelon has ripened.