My mom and I joined this tour on a rainy day, which made the temperature extra cold, but it was still an overall good experience. Shirakawa-go (the UNESCO site) was still ok to explore and, since I'm from a tropical/no-snow country, I got to "enjoy" little puddles of snow around the place. Our tour guide, Lily, was accommodating and had clear instructions, so the whole trip felt smooth and hassle-free. Also, please do try the award-winning pudding shop Shirakawago Purin No Le while you’re there. I got the matcha and chocolate flavors, and both were so good. Overall, a great day trip and worth it (despite the rainy weather).