This tropical paradise offers great weather! As Vietnam is a long stretch of land exceeding 1000 km in length, you can expect different climate zones. Having said that, Vietnam is great for all year travel! It is always better to breakdown this country into two regions to assess the weather:
North Vietnam: This includes both Halong Bay and Hanoi. The Winter seasons starts in November and ends in April and the temperature ranges from 17- 22 degrees. Summer is from May to October where the temperature can increase up to 37 degrees. The dry season is from January to August and temperatures average in their mid-30s.
South Vietnam: As it is only just 8 degrees north of the equator, South Vietnam offers great tropical weather!