Heidelberg Weather

Heidelberg has an oceanic climate , defined by the protected valley between the Pfälzerwald and the Odenwald. Year-round, the mild temperatures are determined by maritime air masses coming from the west. In contrast to the nearby Upper Rhine Plain, Heidelberg’s position in the valley leads to more frequent easterly winds than average. The hillsides of the Odenwald favour clouding and precipitation. The warmest month is July, the coldest is January. Temperatures often rise beyond 30 °C (86 °F) in midsummer. According to the German Meteorological Service, Heidelberg was the warmest place in Germany in 2009.