“Wetter leer 16 tage” refers to a interval of 16 days of dry climate in German-speaking areas. It’s a conventional perception that this era, which usually happens in August, brings good climate and a bountiful harvest.
The “Wetter leer 16 tage” is claimed to have originated within the Center Ages, when farmers relied on the climate to make sure a profitable harvest. If the climate was dry throughout this era, it was believed that the crops could be plentiful. Over time, this perception has grow to be ingrained in German tradition, and the “Wetter leer 16 tage” continues to be extensively noticed at this time.
