Rizhao's winters are cold and variable, with January temperatures averaging just 1°C, while February is slightly milder. Spring arrives in March, with temperatures slowly warming up to an average of 9°C, but April brings more consistent warmth, averaging 13°C. Summer months from June to August are warm and relatively stable, with July being the hottest month, averaging 26°C. Autumn brings a gradual cooling trend, with October experiencing a wide temperature range, before November's temperatures drop back down. Winters return in December, with temperatures averaging around 4°C, but still prone to cold snaps.