Boryeong's winters are harsh, with temperatures often plummeting below freezing in January and February, averaging around 0°C and 2°C respectively. As spring approaches, the mercury slowly rises, with March experiencing mild fluctuations between -2°C to 18°C. April brings more consistent warmth, averaging 13°C, while May is characterized by gentle highs of up to 25°C. Summer arrives in June, with temperatures soaring into the mid-20s, peaking at an average high of 23°C. By July, the heat becomes more pronounced, with averages reaching a sweltering 28°C.