Hoi An is located in a tropical monsoon climate. Temperatures are high and less changing. Each year has two seasons: the rainy season lasts from August to December and dry season from January to July. In the rainy season is often rainy and very humid climate, located beside the sea so often affected by tropical depressions and storms in the last months of year. Therefore, this season is often not suitable for tourism interests unless you have a walk in the ancient town by boat, but the accommodation and travel is equally inconvenient at this time.
The weather is very nice in dry season, ideal for outdoor activities, especially outdoor activities at sea. Besides, you should visit Hoian in the early months as in January, February, March to participate in the festivities this time of year.