Wilmington's winters are chilly and unpredictable, with temperatures often dipping below freezing in January and February, but averaging around a mild 1°C. As spring approaches, temperatures gradually warm up, reaching averages of 8°C in March and 12°C in April. Summer brings warmth, with July and August averaging highs of around 25-26°C, although occasional heatwaves can push temperatures above 33°C. Autumn is generally milder, with September being the warmest month, followed by a cooler November and December, which see temperatures dip to around 6°C on average.