Cherbourg's winter months, January and February, are cool with temperatures ranging from just below freezing to mild highs. March marks the beginning of spring, with temperatures gradually warming up, sometimes reaching into the mid-twenties. Summer brings warm days, often in the high twenties, but cooler nights around 11-12 degrees Celsius. Autumn is similar to spring, with temperatures fluctuating between cool and mild, while winter cools down again, with occasional highs above 10 degrees Celsius.