Wet Season (April to October): The wet season begins with the onset of summer heat in Vientiane. Temperatures soar to around 30-degrees Celsius till May. Some days are cloudy, while others may experience occasional showers. June brings the monsoon with it to Vientiane. This season lasts till the end of October. The mercury stays at around 30-degrees Celsius and heavy humidity is experienced throughout these months.
Dry Season (November to March): Winter is warm and pleasant in Laos. The months from November to March are dry, sunny and cool. Temperatures range from 20 to 25-degrees Celsius. Light humidity can be expected in this season. This is the peak tourist season in Laos so expect crowds.