Wilhelmshaven's climate is characterized by mild winters and warm summers. Winters are cool, with temperatures often below freezing, especially in January and February, but can occasionally rise above average. As spring approaches, temperatures gradually warm up, reaching a pleasant range in April and May. Summer months bring warmth, with July being the warmest month, but temperatures remain relatively stable throughout the season. Autumn is similar to spring, with temperatures dropping again in October and November before cooling down further in December.