Nantong experiences mild springs with temperatures gradually warming up from February's lows of around 10-15°C, reaching an average high of 18°C by April. Summer months bring hot and humid weather, with June being the warmest, averaging highs in the mid-30s Celsius. Autumn is generally pleasant, with September temperatures ranging from 19-25°C on average, before cooling down to around 10-15°C in November. Winters are relatively mild, with January averaging lows of around 2-6°C and highs of around 8-12°C, making it a suitable time for outdoor activities.