Winters in Ravensburg are cold and variable, with temperatures often fluctuating between freezing and mild conditions. January is typically the coldest month, with average temperatures around -2°C, but can drop as low as -16°C or rise to 11°C. As spring approaches, temperatures slowly increase, with April and May averaging around 4°C and 7°C respectively. Summers are warm but not hot, with July and August averaging around 15°C, while September brings a slight cooling trend. Winters then return, with December being one of the chilliest months, with average temperatures around 1°C, often dropping to -15°C or rising to 15°C.