Climate Report over Japan
Monthly Highlights
-Monthly mean temperatures were above normal in eastern and western Japan. Monthly precipitation amounts were significantly below normal on the Pacific side of northern and eastern Japan, and on the Sea of Japan side of western Japan, and monthly snowfall amounts were significantly below normal on the Sea of Japan side of Japan. Winter monsoon pattern was dominant mainly in northern Japan and few low pressure systems passed near the mainland of Japan, but strong cold air mass was temporarily observed and the warm air often covered the west of eastern Japan.
-Monthly mean temperatures were significantly above normal in Okinawa/Amami. Monthly precipitation amounts were above normal in Okinawa region, since the wet air often flowed into the region.
Climate Anomaly Table Over Japan
Monthly Climate Anomaly over Japan
Time Series of Temperature Anomaly
Time Series of 10days Precipitation Amount Ratio and Sunshine Duration Ratio
10-day Mean Sea Level Pressure
10-day Mean 850hPa Temperature
10-day Mean 500hPa GeoPotential Height
10-day Mean Outgoing Longwave Radiation
Note: Figures of outgoing longwave radiation (OLR) in Monthly Report over Japan are based on the NOAA CPC Blended OLR data from the September 2023 report, while they were based on the NOAA CPC AVHRR OLR data until the August 2023 report.