✔ Updated · field spot, weight, sound + rind
Nothing beats a sweet, juicy watermelon, and nothing's sadder than cutting into a pale, mealy one. Watermelons don't ripen after picking, so these six quick checks help you grab a winner every time.
To pick a ripe watermelon, look for a creamy or buttery-yellow field spot (not white), pick it up to make sure it feels heavy for its size, and tap it for a deep, hollow sound. Choose a symmetrical melon with a dull rather than shiny rind, no soft spots or cracks, and a dry, brown stem.
- Field spot: creamy yellow = ripe; white or pale green = picked too early.
- Weight: heavier than it looks means more juice.
- Sound: a deep, hollow thump, not a dull thud or a high ping.
- Rind: dull, firm and even, with no soft spots or bruises.
How to Pick a Watermelon: 6 Signs It's Ripe
- 1. Find the field spot. Turn the melon over and look for the patch where it rested on the ground. A large creamy or buttery-yellow spot means it ripened on the vine. A white or pale green spot means it was picked early.
- 2. Lift it. A ripe watermelon is about 92% water, so it should feel heavy for its size. Compare two melons of the same size and choose the heavier one.
- 3. Tap it. Knock with your knuckles. A ripe melon gives a deep, hollow sound, like a knock on a door. A dull, flat thud can mean it's overripe; a high, tight ping usually means underripe.
- 4. Check the rind. A ripe watermelon has a dull, matte rind. A very shiny rind usually means it's underripe. The rind should be firm, with no soft spots, dents, cracks or leaking juice.
- 5. Look for webbing. Rough, brown, web-like lines on the rind, sometimes called sugar spots, form where bees pollinated the flower. More webbing often means a sweeter melon.
- 6. Look at the shape and stem. Choose a symmetrical melon, round or evenly oval, without odd bumps or flat sides. If the stem is still attached, it should be dry and brown, not green.
Does Watermelon Ripen After Picking?
No. Watermelon doesn't get sweeter after it's harvested, because it stops building sugar once it leaves the vine. A melon left on the counter for a few days may soften and its color may deepen slightly, but it won't ripen. That's why choosing well at the store or farm stand matters so much.
Watermelon Myths
- "Male" and "female" melons: elongated versus round melons are often called male and female, but watermelon fruit all comes from female flowers. Shape mostly reflects the variety.
- The scratch test: scratching the rind with a fingernail isn't a reliable sign of ripeness, and stores don't appreciate it.
- Bigger is better: size doesn't affect sweetness. Weight for its size matters far more.
How to Tell if a Cut Watermelon Is Good
Ripe flesh is deep pink or red, firm and juicy, with dark brown or black mature seeds (in seeded varieties). Pale, white-streaked flesh is underripe. A watermelon has gone bad if the flesh is mushy, slimy or grainy and dry, darkened, or smells sour or fermented. Throw out any melon with mold on the rind or flesh.
How to Store Watermelon
Wash the rind before cutting so the knife doesn't drag dirt or bacteria into the flesh, and refrigerate cut watermelon within 2 hours. Turn extra melon into a watermelon popsicle, or, for adults of legal drinking age, a watermelon margarita.
| Watermelon | Where | How long |
|---|---|---|
| Whole, uncut | Counter, out of direct sun | 7 to 10 days |
| Whole, uncut | Refrigerator | About 2 weeks |
| Cut slices or cubes | Airtight container in the refrigerator | 3 to 5 days |
| Cubes | Freezer, frozen flat on a tray then bagged | Up to 6 months; best in smoothies or drinks |
Common Mistakes When Choosing a Watermelon
- Picking the biggest or prettiest melon instead of the heaviest for its size.
- Choosing one with a white field spot or a shiny rind.
- Buying a melon early and expecting it to ripen at home.
- Ignoring soft spots, cracks or a sour smell.
Frequently Asked Questions
How do you pick a good watermelon?
Look for a creamy-yellow field spot, choose a melon that feels heavy for its size, and tap it for a deep, hollow sound. The rind should be dull rather than shiny, firm, and free of soft spots or cracks. Brown, web-like sugar spots are a bonus sign of sweetness.
How can you tell if a watermelon is sweet?
A large, buttery-yellow field spot and brown webbing on the rind are the best outside clues, since both point to a melon that ripened fully on the vine. A heavy feel and a deep, hollow sound when tapped also point to a juicy, ripe melon.
What does a ripe watermelon sound like?
A ripe watermelon sounds deep and hollow when you knock on it, like knocking on a door. A high-pitched, tight sound usually means it is underripe, while a dull, flat thud can mean it is overripe and the flesh may be mushy.
How do you check if a watermelon is good once cut?
Good watermelon flesh is deep pink or red, firm and juicy, and smells fresh and sweet. Throw it out if the flesh is slimy, mushy, darkened or very dry, smells sour or fermented, or shows any mold. Refrigerate cut watermelon and use it within 3 to 5 days.
Can you ripen a watermelon after it is picked?
No. Watermelons do not get sweeter once they are picked. Leaving one on the counter will not improve the sugar, although the flesh may soften a little. Pick a ripe one at the store using the field spot, weight and sound checks.
