In California, the watermelon season typically runs mid-May to late September, with peak availability mid-June through late August. Exact weeks shift a little with each year's weather.
Can I pick my own watermelon in California?
Rarely offered u-pick — buy them at the farm stand, where the grower has already thumped and field-tested the load. The best market weeks are mid-June through late August.
How long does watermelon season last in California?
about 19 weeks end to end — mid-May to late September. The early and late shoulders are real but lighter; the solid stretch of chalk on the band is the sure bet.