Vietnam experiences a diverse climate from north to south, owing to its varied topography and the country's considerable length (2000 km from north to south). When one region is humid, cold, or rainy, the other can be pleasantly sunny in contrast. Based on our experience, the optimal time to visit Vietnam is from October to April. Within this timeframe, the best months are October to November and March to May. During these periods, the weather remains pleasant, and, additionally, they are the least rainy months of the year in Vietnam. While July and August can be a bit hot (30-35 degrees Celsius), Halong Bay typically enjoys sunny weather. You'll also have the opportunity to witness the region adorned with endless terraced green or yellow rice fields. Regarding the southern region, despite it being the rainy season, precipitation usually lasts for only an hour or two each day, with the rest of the day being sunny. If you already have a specific timeframe in mind for your trip (winter, summer, etc.), please inform us, and we can provide guidance on the most favorable months.