September begins to cool down, with an average temperature of 18 °C (64.4 °F). The high and low temperatures are 20 °C (68 °F) and 10 °C (50 °F), respectively, and the days are mostly sunny.
Wearing a long-sleeve shirt with a light overcoat and long trousers or jeans is adequate. If you are not in good physical condition, also wear a thin sweater because it's cool in the early morning.
The Dalian International Fashion Festival is held in September. The festival, as well as Dalian’s beautiful scenery and culture and reputation as a fashion city, brings many celebrities and super stars during this time . Take the chance to see your favorite super star. September is also crowded so make your reservations in advance.