Friedrichshafen's winters are chilly, with temperatures often below freezing and occasional drops as low as -17°C. Spring brings gradual warming, with temperatures rising steadily from April to June, but still experiencing some cooler days. Summer is mild to warm, with high temperatures rarely exceeding 31°C, while autumn sees a return to cooler conditions, with temperatures dropping back into the single digits by October. November and December bring frosty mornings and occasional cold snaps, while January's temperature averages around freezing point.