According to the experience of previous years, merchants will be in a great rush to buy the goods before May Day. Until that time, prices will stay at the same level. As the temperature rises, the abundance of sunshine will accelerate the ripening process and many watermelons will enter the market. The prices will slowly decline. This year, a large number of watermelons will arrive on the market before the May Day, so there shouldn't be any sudden changes in prices.
Source: Watermelon Business Network