Hello, late March may still be cold, just put on a jacket & comfortable walking shoes. Not certain on public transport schedule during that time, best is to google search the public bus schedule for confirmation. Enjoy yr Hokkaido holidays.

Hi Melanie, Guess you need to see the weather forecast on this but trust it is a cold season. As per what another comment that I saw, "During winter, the snow and the cold practically froze and covered the whole pond. Despite having night illumination, the sight wasn't impressive enough. It's basically dead tree barks standing on frozen white lake illuminated by blue lights". So I believe you won't actually see the blue pond which what most people want to see when they go there. However I trust u could see the background of snowy mountain at the pond itself. All the best!

I don't know if it's frozen or not. But, are you going there by public transportation? It's easier to go by driving in Spring, Summer or Autumn, but not in Winter with snow/ice on the roads. I learned that many Singaporean people want to drive in winter in Hokkaido, but it's dangerous to drive. Although it's not easy to go there by public transportations because few local people go there in Winter, at least, you should not drive and should check the timetable of the buses to the Pond in advance.

It would be frozen around 26 December.

It was explained to us that the colours stem from (polluting) minerals in the water and that it stays blue all the time, unless there have been torrential rain. In other words - You should be able to see it in all its azure glory in October! Driving times in Hokkaido are tricky to calculate, the speed limits are ridiculously low, though most locals seem to be quite flexible when it comes to adhering to the rules...

Yes, at summer will be change into blue. You must visit 😁 enjoy your holiday 👍🏻

Better you go with train, if you have JR pass you can use it and then continue your trip wih bus from Biei station. It is easy way, you dont have to worry. Enjoy your trip.

Highly likely iced over in Feb.

From Sapporo to Asahikawa, the road is ok. From Asahikawa, the road is two-laned local. The former no scenery. The latter more scenic and enjoyable. The former faster, The latter slower. I understand Hokkaido road has sub-surface heating lines. As such, I do not worry about the snow. Actually I had to detour long in early November at Aomori. The road to the pond has no steep heels, but thick woods.