In September, the weather in Nakhon Nayok City is typically hot. Average daily high temperature in September is about 32 degrees above zero. On average, Nakhon Nayok City has 27 rainy and 3 cloudy days in September. The rains are usually heavy. September as well as May, June, July, and August is considered the most uncomfortable time to visit Nakhon Nayok City.