- The winter monsoon was stronger than normal around eastern and western Japan since late December, but the strength of the monsoon varied throughout this winter. Seasonal temperatures were below normal in eastern and western Japan.
- Seasonal precipitation amounts were significantly below normal in western Japan and seasonal sunshine durations were above normal in western Japan and on the Pacific side of eastern Japan due to less passage of low pressure systems.
- In Okinawa/Amami, seasonal precipitation amounts were above normal and seasonal sunshine durations were below normal due to fronts and frequent passage of low pressure systems since late January.