The gross production of watermelons in Japan, expressed in Million US Dollars PPP (2004–2006), showed a consistent decline from 2024 to 2028, indicating a steady downward trend. This sequence reveals a year-on-year decrease, with a CAGR that suggests an average annual drop in production value over these five years. In 2023, the actual production stood higher than in subsequent forecasted years, displaying the beginning of this declining trend.

Future trends to watch for:

Climate changes potentially affecting agricultural output.
Shifts in domestic consumer preferences and international demand for Japanese watermelons.
Potential policy impacts on agricultural exports and subsidies.