Wilmington Weather in September

During September, Wilmington experiences high daytime temperatures of 29°C (84°F) and cooler nights around 19°C (66°F). As the wettest month of the year, expect frequent rainfall.

Rainfall in Wilmington in September

With peak rainfall occurring this month, heavy downpours are common. It's advisable to have a poncho on hand to manage the rain. Looking at the last 30 years, the data shows about 12 days with rain, averaging 215 mm (8.5 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Wilmington in September

If you're visiting Wilmington in September, expect highs of 29°C (84°F) and overnight lows around 19°C (66°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 19°C (66°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. April typically offers the best weather for Wilmington.