The highest number of deaths was reported in the central prefecture of Niigata, where 12 people died, according to Japan's Fire and Disaster Management Agency.
Six deaths were reported in Akita prefecture, four in Aomori, three in Hokkaido, two in Yamagata and one in Iwate, all in northern Japan. One person died in Nagano prefecture in central Japan, and another in Shimane prefecture in the southwest.
Some of the victims died while trying to clear snow from streets and homes. In response, the northern prefecture of Aomori requested assistance from Japan's Self Defence Forces to remove snow from the roofs of homes belonging to elderly residents.
According to the Fire and Disaster Management Agency, the deaths occurred between January 20 and February 3 due to strong cold air masses along the Sea of Japan coast.
In some areas, the snowfall has already surpassed double the average amount, making it difficult for residents to move around.
The Aomori prefecture has been one of the hardest-hit areas. In some areas, the snow has piled up to 4.5m high.
"The amount of snow is so heavy that it has overwhelmed the local staff who are working to remove the snow from the roads and rooftops," officials said.
Prime Minister Sanae Takaichi held a special cabinet meeting on Tuesday, directing ministers to take all necessary steps to ensure that no further lives are lost.
The Japanese government has since approved the use of Self-Defence Forces to help remove snow and provide relief.
Aomori governor Soichiro Miyashita said he had asked for military assistance to help residents in need, especially the elderly who live alone.
"The risk of life-threatening incidents, such as fatal accidents caused by falling snow from rooftops or collapsed buildings, is imminent," he told a press conference.
Meteorological authorities expect temperatures to rise slightly starting on Wednesday, but snow is expected to return to the Sea of Japan coast beginning on Sunday.
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