Best time to travel
Most of the year is hot and humid. Laos enjoys a tropical climate with two distinct seasons. The rainy season is from the beginning of May to the end of September, and the dry season is from October through April. The yearly average temperature is about 28 degrees Celsius, rising to a maximum of 38 degrees Celsius during April and May.
In Vientiane a minimum temperature of 19 degrees Celsius is to be expected during January. In mountainous areas, however, temperature drops to as low as 14-15 degrees Celsius during the winter months, and during cold nights, can easily reach the freezing point. The average precipitation is highest in Southern Laos, where the Annamite Mountains receive over 3,000 mm. annually, in Vientiane rainfall is about 1,500-2,000 mm, and in the Northern provinces only 1,000-1,500 mm
The best time to visit Laos is between November and April. The hot season from March to May is very dry and certain river trips are not possible.
Clothing during the hot season, January to April, brings light clothes in cotton and linen, sunglasses and a hat all year long. Sunscreen and bug repellant is also recommended. From November to December, the cold season, it is a good idea to bring warm clothing such as sweaters and jackets for the morning and evening, and even more so if you are visiting the mountainous regions of the North. From May to October, during the rainy season, it is best to have waterproof clothing. It is best to wear easily removable shoes or sandals when visiting the temples.