Weather is probably a major factor when you plan your trip to Long Xuyen, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually March and April, with an average temperature of 29°C, while the coldest months are January and February, with an average of 27°C. The rainiest months in Long Xuyen are October, September, July and August, with each month seeing an average of 295 mm of rainfall.