The best time to go to Defeng is typically during the spring (March to May) and autumn (September to November) months.
These periods offer the most pleasant weather conditions for exploring the region. Spring brings comfortable temperatures and blooming landscapes, while autumn provides clear skies and mild weather, great for outdoor activities and sightseeing. You'll avoid the intense heat and humidity of summer and the colder, sometimes snowy, conditions of winter.
For those planning outdoor adventures, such as hiking in local mountains or exploring the waterfalls, spring and autumn are ideal. The trails are generally dry and the cooler temperatures make for a more enjoyable experience. This is especially true for travellers who appreciate being outdoors without the discomfort of extreme weather.
If your primary interest is experiencing local cultural festivals, it's worth noting that some vibrant events occur during the summer months. However, be prepared for hotter weather and potentially more rainfall during this time.