Winters in Sfantu-Gheorghe are harsh, with temperatures frequently dropping below -20°C and averaging around -4°C in January. The coldest months are usually January and February, with averages of -4°C and 0°C respectively. As spring approaches, temperatures gradually rise, reaching an average of 3°C by April and 10°C by May. Summer is warm to hot, with July and August often seeing temperatures above 30°C, although June can be quite pleasant with averages around 14°C. Autumn brings a return to cooler temperatures, with October averaging around 5°C, similar to the spring months.