Weather is probably a major factor when you plan your trip to La-ngu, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually March and February with an average temp of 82°F, while the coldest months are January and February with an average of 79°F. The rainiest months in La-ngu are November, October, September, and May, with each month seeing an average of 12 inches of rainfall.