Will it be cold to go to Beidaihe on October 1st?

According to the query weather network, Beidaihe is a district of Qinhuangdao City, Hebei Province, which is located on the Bohai Sea and is a famous summer resort and tourist attraction in China. Beidaihe has a warm temperate and semi-humid continental monsoon climate with distinct four seasons and a mild climate, with an average annual temperature of 11.8℃. The average temperature in Beidaihe in October is 18.5℃, the highest temperature is 23.3℃, and the lowest temperature is 14.7℃. The average precipitation in October is 25.9 mm, and the average relative humidity is 66%. The average wind speed in October is 3.4m/s, and the main wind direction is the south wind. The temperature is slightly lower, so it is recommended to wear a thin coat, sports coat, windbreaker and cardigan sweater as the base: short sleeves, waistcoats, short-sleeved shirts, sweaters and so on.