Vietnam is a destination that you can visit year round. The distance between the North and the South means that the variation between regions is substantial. For example, winters in Hanoi are cool, yet in Ho Chi Minh City the weather is still tropical. The charm of Vietnam means that the weather can have little impact on the enjoyment of your time there.
Winter in Vietnam is from December through to February. Summer is from June through to August.
North Vietnam (Hanoi, Halong Bay) is monsoonal with a hot, rainy season from April to September and a cool, dry season from October to March. The winter months can be cool so be sure to take something warm.
The Central part of Vietnam (Hue, Da Nang and Hoi An) generally has a lovely year round climate. The summers can be dry and hot – don’t forget your swimmers and some loose cotton clothing. The winters can be cool (and sometimes wet), especially in the mornings so again take something warm. Humidity is average in the central region.
The South (Ho Chi Minh City, Mekong Delta, Nha Trang) is typically hot all year round with two main seasons – rainy and dry. In the summer months the downpours can be somewhat frequent.
The mountainous regions (Sapa in the Northwest and South Central Vietnam see little fluctuation in the weather conditions. It is relatively cool year round. The rainy season is from May to September and in extreme conditions you may see snow in December or January in Sapa. If travelling to Sapa between November and March take warm clothes.
In summary, you can visit Vietnam at any time and also of course nobody can truly predict the weather as whatever we write – weather is weather and often has its own ideas. However, with all that in mind October to May seem to have the best odds weather wise!