Weather in Vietnam can vary wildly from region to region, from snow in the north to over 100-degree temps in the south. Generally, there are two monsoon seasons, between October and March in the northeast and between April and October everywhere but the mountains. Most Vietnam travel guides recommend visiting in April, May or October, or November to February if you will just be in the south.

There are immigration laws governing foreign employment and investment in Vietnam. The Labor Department is responsible for ensuring that all foreign nationals working in the country are staying within the indicated limits of their permits and contracts. There are also legislations concerning admissions into, via, and out of Vietnam.