Bac Giang's climate is characterized by a warm and humid subtropical monsoon climate. In winter, temperatures range from 7-25°C in January and November, with a cool spell in December, while the summer months are hot and dry, with temperatures soaring up to 40°C in June and May. Spring and autumn bring mild conditions, with temperatures ranging from 15-30°C in March, April, September, and October. The region experiences relatively stable temperatures throughout the year, with average highs consistently above 20°C from February to August.