June in Biên Hòa is the cloudiest month of the year. In June, the weather in Biên Hòa is typically hot. Average daily high temperature in June is about 29 degrees above zero. On average, Biên Hòa has 30 rainy days in June. The rains are usually heavy. June as well as April, May, July, and August is considered the most uncomfortable time to visit Biên Hòa.