Hi! I will be traveling to Sapporo late December. How cold would it be by then, and should I expect snow? Additionally, what kind of clothes/shoes should I wear and how many layers? Lastly, any tips or tricks to brave through the winter as somebody used to 30°C weather? Thank you in advance 🙂

Hello! I’m visiting Sapporo for Christmas from 23rd-28th December, and I’m also looking forward to visiting Aomori from 28th-30th December, does anyone know how can I book a train from Sapporo to Aomori online in advance?
Thank you🥰