Sapa has beauty all year round peak season is in the spring & summer March to May has the pick of fine clear weather but even though June to August has more rain it is a spectacular time to visit while the rice patties are in their full glory, September to December is still a lovely time to visit although it does start to really cool down around Christmas, the colder and foggier months are January & February the whole winter period though cold (sometimes 0`C ) is still very beautiful and rewarding