Watermelon at the supermarket

Averaging $8.00/kg right now  (23/04/2026)

▲ 13.6% per month

Price is rising at 13.6% per month

Watermelon
Current avg
$8.00
per kg
Tracked at
2 shops
of 4 retailers

12-month price history

Monthly average with min/max range band. Data from Woolworths, Coles, Aldi, and IGA.

6 months of data  ·  Last updated: 23/04/2026 22:00

Grow-vs-buy savings

A seed packet or seedling costs around $5 and should give you roughly 8kg after about 4 months in typical home conditions. At today's price of $8.00/kg that's $64.00 worth at the supermarket.

You spend
$5
Seed packet or seedling
Shop would charge
$64.00
for ~8kg
You save
$59.00
12.8× return

Before you buy: Warm-season crop needing a long hot summer. Sprawls 3-4 m per plant. Seedless varieties need a pollinator (seeded) variety nearby.

Realistic yield: One plant 1-3 fruit at ~3-8 kg each. Sugar baby and similar icebox types are smaller (~2 kg).

Ballpark numbers — yield varies by climate, variety, care and luck. Use as a rough indicator, not a business plan.

Today at each retailer

CHEAPEST
Aldi
$3.49
Watermelon Loose
Woolworths
$12.50
Woolworths Watermelon Fingers

Want to grow your own watermelon?

See when and how to plant it in your part of Australia — free.

Real ROI

Based on live-scraped seed prices and measured yield data.

Seed / Plant cost
$3.25
20 seeds
Annual yield (4 m² bed)
6.4 kg
@ $12.50/kg today
Supermarket value
$80.00
at today's prices
Profit
+$76.75
after seed cost
ROI multiple
24.6×
return on seed cost

Yield based on a 4 m² home garden bed. Source: QLD DAF Cucurbit Production Guide; NSW DPI Growing Guide. Seed price scraped 18/04/2026.

Pests to watch for

Australian pests and diseases that target watermelon. Full library.

Two-spotted Spider Mite high
Tetranychus urticae
Root-knot Nematode high
Meloidogyne spp.
Peak this month
Powdery Mildew high
Podosphaera xanthii; Erysiphe cichoracearum; Leveillula taurica
Peak this month
Downy Mildew high
Peronospora spp.; Pseudoperonospora cubensis; Bremia lactucae
Peak this month
Fusarium Wilt high
Fusarium oxysporum (multiple special forms)
Peak this month
Mosaic Viruses (CMV, ToMV, ZYMV) high
Cucumber mosaic virus; Tomato mosaic virus; Zucchini yellow mosaic virus
Peak this month
Pumpkin Beetle moderate
Aulacophora hilaris