Cornwall's winters are long and cold, with temperatures often dropping below -20°C in January and February, but gradually warming up by March. Spring arrives slowly, with April and May seeing mild temperatures, while June marks the beginning of summer with warm days and cooler nights. Summer is pleasant, with July and August being the warmest months, although daytime highs are not extremely high. Autumn brings a return to cooler temperatures, with October and November experiencing some frosty mornings. Winters then resume, with December being one of the coldest months of the year.