Haiphong's climate is characterized by mild winters and hot, humid summers. In winter, from January to February, temperatures range from 8-14°C, with a gentle warming trend until March when highs reach up to 30°C. Spring brings continued warmth, with April and May averaging highs of around 30-38°C, marking the start of the hot season. The summer months, June to August, are the hottest, with temperatures occasionally reaching above 39°C, before slowly cooling down in autumn. Winter returns in December, bringing cooler temperatures ranging from 11-27°C.