In Phan Thiet, Vietnam, the dry season begins in January with temperatures ranging from 22°C to 27°C. February brings warmer days with highs around 24-29°C, while March marks the peak of spring with average temperatures of 25-30°C. The hot summer months of April to September see temperatures soar between 26-34°C, with July and August being the hottest. Autumn arrives in October with temperatures gradually decreasing to 22-28°C, before dropping further into winter's mild range of 18-24°C from December to January.