Mekong Delta is a dank swamp with clammy weather. This makes a great habitat for bugs including mosquitoes – mosquito bites can take all the fun away from the trip and make you terribly sick with some tropical disease – so, to keep trouble at bay, bring enough bug spray. Furthermore, if you are there during the dry season, the sun could be searing hot, and you cannot possibly fight off the sun rays without sunscreen with good SPF. Also, you need to pack yourself some light breathable clothes and a raincoat – there could be sudden attacks of rain.