I would like to ask if there will be heavy snow during the first week of march and if driving or parking at the snow monkey park will be possible?
Other than Matsumoto castle, is there any other attractions around nagano worth visiting?
There isn’t normally heavy snowfall at the beginning of March, but weather is unpredictable so please look at the forecast in advance of your trip. That said, the Northern Nagano area is used to heavy snow and clears the roads and parking areas very well, so you shouldn’t have a problem parking there.
I hope that answers your question!