Some 5,120 people died due to heat from beginning of this summer, Robert Koch Institute reports.
Much of western continental Europe experienced drier-than-average conditions in June, alongside extreme heat.
Temperatures expected to exceed 40C (104F) in many areas.
June rainfall deficit and rising water demand worsen groundwater conditions across much of country.
Price per pound of coffee reaches $3.57 amid rising temperatures, reduced rainfall in Brazil and Vietnam due to El Nino, expert says.