Lhasa's climate varies significantly with the seasons. In spring, temperatures rise gradually from around 0°C in February to a maximum of 10°C in May, though average highs are often lower. Summer months bring warm days with temperatures occasionally reaching up to 20°C, but overnight lows can still be quite chilly. Autumn is generally mild, with temperatures ranging from around 5°C to 15°C during the day and dropping to near freezing at night. Winter brings cold temperatures, averaging -2°C in January, though occasional warmer spells are not uncommon.