11 Of The Sweetest Watermelon Varieties

Watermelon has always been a world of sweetness waiting to be explored! From tiny backyard varieties to rare Japanese treasures, watermelons come in surprising shapes, sizes, and even colors.
Whether you’re planning your garden or shopping at the farmers’ market, knowing which varieties pack the most natural sugar (measured by their Brix rating) can help you choose the perfect refreshing treat.
If you want to know more, I would advise you to continue reading.
1. Mountain Sweet

Yellow flesh sets this heirloom variety apart from typical red watermelons. With a Brix rating of 11-13, Mountain Sweet delivers complex sweetness that lingers on your tongue.
Gardeners treasure this melon for its firm texture that holds up beautifully when sliced. The rich flavor profile combines traditional watermelon sweetness with subtle honey notes that make it unforgettable.
2. Charleston Gray

Picnic perfection comes in the form of Charleston Gray, a classic American watermelon with a Brix rating around 13. The pale green exterior hides brilliant red flesh that’s remarkably fiber-free.
What makes this variety special? Its rind resists bruising during transport, while the sweet interior maintains ideal firmness. No wonder it’s been a beloved roadside stand staple since the 1950s!
3. Densuke

Japan’s black-rinded treasure fetches astronomical prices at luxury fruit auctions—sometimes over $6,000 for a single melon! The striking ebony exterior conceals crimson flesh with a Brix of 12-13.
Rarity adds to its allure, as Densuke watermelons grow exclusively on Hokkaido Island. The balanced sweetness and unique appearance make it the caviar of watermelons, sought after by collectors and connoisseurs worldwide.
4. Sugar Baby

Small but mighty describes this beloved icebox watermelon perfectly! Weighing just 8-10 pounds, Sugar Baby packs impressive sweetness (Brix 10-12) into its compact frame.
The deep red flesh practically bursts with juice when you cut into the dark green rind. Home gardeners love how easily these melons grow in limited spaces—even containers on patios can produce these sweet treats!
5. Crimson Sweet

Farmers markets light up with Crimson Sweet’s distinctive striped pattern—light green stripes on dark green background signal sweetness inside! This heirloom variety consistently delivers Brix readings of 10-12.
Beyond delicious flavor, gardeners appreciate its remarkable disease resistance and high yields. The tender, deep-red flesh strikes the perfect balance between juicy and firm, making it ideal for both fresh eating and fruit salads.
6. Jubilee

Long and impressive, Jubilee watermelons command attention at summer gatherings! These oblong beauties can reach 25-35 pounds, with striped green exteriors hiding vibrant red flesh with Brix ratings of 11-13.
The surprisingly thin rind maximizes the amount of sweet, juicy goodness inside. Southern growers particularly treasure Jubilee for its heat tolerance and consistently sweet harvests even during scorching summers.
7. Moon & Stars

Folklore and flavor combine in this magical-looking melon! Named for its dark green skin decorated with yellow dots resembling celestial bodies, Moon & Stars delivers a Brix rating exceeding 11.
Nearly lost to history, this 1901 heirloom was rediscovered and saved by seed preservationists. The reddish-pink flesh provides a burst of old-fashioned sweetness that transports tasters to simpler times when watermelon seeds were spitting contest ammunition.
8. Allsweet

Family reunions and Allsweet watermelons go hand-in-hand! These massive 25-30 pound fruits feature distinctive dark green stripes over a lighter background and sweet red flesh with excellent texture.
The oblong shape makes for perfect slices that don’t fall apart on paper plates. Gardeners appreciate how well these melons store after picking, maintaining their sweetness and firm texture longer than many varieties.
9. Orangeglo

Prepare for surprised faces when you slice open this watermelon to reveal vibrant orange flesh! The unexpected color isn’t just for show—Orangeglo delivers intense sweetness with Brix ratings up to 11.
The flavor profile brings something special, too. Beyond typical watermelon sweetness, subtle tropical notes create an almost cantaloupe-watermelon hybrid experience.
Grow these conversation-starters in your garden for guaranteed “wow” moments at summer gatherings.
10. Yellow Doll

Sunshine captured in fruit form—that’s Yellow Doll! This petite icebox watermelon (6-10 pounds) reveals canary-yellow flesh when sliced open, surprising first-timers with its honey-like sweetness and Brix of 10-11.
Perfect for small families, Yellow Doll ripens earlier than many varieties. The tropical flavor profile and cheerful color make it a children’s favorite, while the crisp texture satisfies even the most discerning watermelon connoisseurs.
11. Sultan

Watermelon royalty has arrived! Also marketed as Summer Sweet, Sultan consistently ranks among the sweetest red-fleshed varieties in scientific testing, with Brix measurements between 12-12.4.
Washington State University researchers confirmed what taste buds already knew—this watermelon delivers exceptional sweetness.
The perfectly balanced sugar profile avoids being cloying, instead providing pure refreshment with each juicy bite from its bright red interior.