Sufficient and well-distributed precipitation is required for good yields. An average precipitation of approx. 1,000 mm/year, as is generally the case in the Tettnang growing region, is sufficient, whereby there is a distinct summer maximum. As a rule, cooler, wet summers bring higher yields with better aroma and bitterness values than hot, dry summers.
The graphic shows the average precipitation distributed across the months of a year for the Tettnang area over a 30-year period.