April is typically one of the hottest months of the year in Laos when the thermostat can hit 40°C, especially in Pakse and the 4000 islands region in the south of the country, whilst temperatures hover around a rather warm 30°C in Vientiane and Luang Prabang. Despite high temperatures humidity levels remain around 70%.
Towards the end of the month showers become more likely as the wet season approaches, especially in the northern regions around Phongsali, although these tend to be infrequent and short lived and won’t affect travel.
Slash & Burn
During April and May you may witness the effects of 'slash and burn' farming, unfortunately practiced throughout much of Asia. New ground is cleared in February and, once dry, any wood and bush not required is burnt. Fires are lit across the country and this can create a hazy effect at times, particularly in rural regions.