The best time to visit Haiyang is during the late spring to early autumn months, specifically from May to October, when the weather is most pleasant for outdoor activities and enjoying the coast.During this period, Haiyang experiences warm temperatures and generally clear skies, making it ideal for beach visits, water sports, and exploring the city's coastal attractions. The summer months, July and August, are particularly popular due to the warmest ocean temperatures, great for swimming and sunbathing.For those who prefer slightly milder weather and fewer crowds, May, June, September, and October offer a comfortable experience.