Watermelons are grown on every continent except Antarctica, but nearly half the world’s supply comes from a single country: China, which produces roughly 50% of all watermelons globally. Beyond China, major growing regions span Turkey, India, Brazil, and the United States, with production concentrated wherever summers are long, hot, and sunny.
Where Watermelons Originated
Watermelons trace back to West Africa, not southern Africa as scientists long assumed. A 2014 molecular study resolved decades of debate by identifying watermelon’s closest wild relative as a species found in Ghana and Benin. From that region, watermelons spread across trade routes to the Mediterranean, the Middle East, and eventually the rest of the world. Ancient seeds have been found in Egyptian tombs dating back thousands of years, evidence that the fruit was already being cultivated well beyond its homeland by that point.
The World’s Largest Producers
China dominates global watermelon production at a scale that dwarfs every other country. According to FAO data, China accounts for 49.72% of the world’s total output. Most of that production happens in provinces with hot, dry summers, particularly in the north and northwest.
Turkey and India rank second and third, followed by Brazil, Algeria, and Iran. These countries share a common thread: large stretches of warm, arid or semi-arid land well suited to the crop. In the Southern Hemisphere, Brazil is the standout producer, with harvests peaking during the opposite calendar months from Northern Hemisphere growers.
Where Watermelons Grow in the United States
In the U.S., watermelon production clusters in the South and Southwest. Florida, Georgia, Texas, California, and Arizona are the top-producing states. Florida holds a unique position as the only state that produces watermelons from December through April, thanks to its subtropical climate. Growers in South Florida can plant as early as December and January, while those in North Florida typically plant in March and April.
Georgia and Texas ramp up production in late spring and summer, supplying much of the country’s watermelon from June through August. California’s Central Valley, with its dry heat and irrigated farmland, extends the season further into fall. Indiana, North Carolina, and South Carolina also contribute meaningful harvests during the peak summer months.
Climate and Soil Conditions They Need
Watermelons are a warm-season crop that thrives in temperatures between 65°F and 95°F. Anything above 95°F or below 50°F slows growth and delays ripening. This is why production gravitates toward regions with long, reliably warm growing seasons rather than places with brief, intense summers. The plants need 80 to 100 days of warm weather to mature, depending on variety, which rules out much of the northern U.S. and northern Europe for outdoor growing.
Well-drained, sandy loam soil with a pH between 5.8 and 6.6 is ideal. Sandy soils warm up faster in spring, giving watermelons a head start, which is one reason Florida’s sandy terrain is so well suited to early-season production. The plants also need consistent moisture during fruit development but can’t tolerate waterlogged roots, making irrigation management a key factor in drier growing regions like California and the Middle East.
How Growing Seasons Differ by Region
In the Northern Hemisphere, most watermelons are planted between March and June and harvested from June through September. The exact timing shifts with latitude. In the southern U.S., planting can begin as early as January in frost-free zones. Further north, growers wait until soil temperatures climb above 70°F, which often means late May or early June in states like Indiana or North Carolina.
In the Southern Hemisphere, the calendar flips. Brazil’s main harvest runs from October through February. Australia grows watermelons primarily in Queensland and the Northern Territory, with peak season from November through March. This staggered timing across hemispheres is what keeps watermelons available in grocery stores year-round, with supply shifting between countries as seasons change.
Why Certain Regions Dominate
Watermelon production isn’t just about climate. Infrastructure, water access, and proximity to markets all play a role. China’s dominance reflects both favorable growing conditions across its interior provinces and enormous domestic demand. The country consumes most of what it produces. Turkey and Iran, meanwhile, benefit from hot, dry summers and centuries-old farming traditions around melon cultivation.
In the U.S., the shift toward large-scale commercial farming in Florida, Georgia, and Texas has been driven by efficient irrigation, established supply chains to major population centers, and the ability to grow during months when other states can’t. Florida’s winter production window is especially valuable because it fills a gap when no other domestic supply exists, reducing dependence on imports during the colder months.