Vietnamese watermelon: season, types, classes and Brix
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Short answer. Vietnamese watermelon is abundant from November to May and is grown all year in central and southern Vietnam. Two types are shipped: seedless red-flesh fruit, and seeded red-flesh fruit of 5–10 kg. Fruit is graded to UNECE FFV-37, with at least 8 °Brix in the central flesh.
When is watermelon in season?
| Months | Supply (indicative) |
|---|---|
| November–May | Abundant |
| June–October | Available; crops continue in the centre and south, with summer crops in the north |
In the north, fruit sown in late February is harvested in May, and fruit sown in June is harvested in August.
Where is it grown?
In Quang Ngai and Binh Dinh (now Gia Lai) in central Vietnam, and in Long An (now Tay Ninh) and Tien Giang (now Dong Thap) in the south. Quang Nam (now Da Nang) and the Mekong Delta also grow watermelon.
Which classes apply?
| UNECE class | Skin defects | Tolerance |
|---|---|---|
| Extra | Very slight only; stalk at most 5 cm | 5 %, of which at most 0.5 % Class II |
| Class I | At most 1/16 of the surface; stalk at most 5 cm | 10 %, of which at most 1 % Class II or decayed |
| Class II | At most 1/8 of the surface; healed cracks and slight bruising allowed | 10 %, of which at most 2 % decayed |
The reference is UNECE FFV-37 (2023). Codex has no specific standard for watermelon.
How is watermelon sized?
By fruit weight. Inside one package, the heaviest and lightest fruit differ by at most 2 kg, or 3.5 kg when the lightest fruit weighs more than 6 kg. The size tolerance is 10 %.
Frequently asked questions
How sweet must the fruit be?
At least 8 °Brix, measured in the central flesh. This is the UNECE minimum.
Which types can I order?
Seedless red-flesh watermelon, and seeded red-flesh fruit of 5–10 kg.
Can you ship outside November–May?
Fruit is grown all year in the centre and south. Availability outside the main window is confirmed with each quotation.
Packing and reefer settings are in watermelon cartons, reefer temperature and container loading. Full specifications are on the seedless watermelon page and the watermelon overview page; for a price, use the watermelon quotation form.
Sources
Last reviewed 12 November 2026 by VIET FARM EXPORT COMPANY LIMITED, Ho Chi Minh City. Figures come from our watermelon specifications; they are indicative and confirmed with each quotation.