Winters in Kouvola, Finland are long and cold, with temperatures often dropping below -20°C. Temperatures fluctuate wildly, but average around -5°C in January and -9°C in February. Spring arrives slowly, with March temperatures gradually warming up to around 0°C, while April and May see increasing highs of up to 17°C and 27°C respectively. Summers are mild, with July being the warmest month, averaging around 21°C, but still experiencing cooler nights. Autumn brings a return to chillier temperatures, with October and November averaging around 7°C and 1°C, before winter's cold grip returns in December.