Tallinn's winters are cold and dark, with temperatures often dropping below -19°C in January and February, but occasionally rising above freezing. Spring arrives in March, bringing mild temperatures that can fluctuate between -10°C and 8°C, slowly warming up to average highs of around 4°C by April. Summer is a pleasant season, with June and July averaging a warm 17°C and 20°C respectively, while August's temperatures are slightly cooler. Autumn brings a return to chillier conditions, with September and October experiencing mild temperatures that can drop back down into the negatives by November. Winters then set in once more, with December's cold snaps often dipping below -14°C.