The best time to visit Dong Van is during the dry season, which runs from October to April, with November and December being particularly pleasant.
During these months, you'll experience clear skies and cooler temperatures, which are ideal for exploring the mountainous terrain. The roads are generally in good condition, making travel between Dong Van and other parts of Ha Giang Province, such as Meo Vac or Lung Cu, much more comfortable. This period is great for those planning to undertake the famous Ha Giang Loop, as the views of the karst landscapes are spectacular without the hindrance of rain or fog.
Couples looking for a scenic and adventurous getaway will find November and December especially appealing. The weather is cool enough for comfortable trekking and motorbiking, but not excessively cold.