Climate Report over Japan
Monthly Highlights
- Monthly precipitation amounts were above normal in northern, eastern and western Japan, with the highest for March since 1946 recorded on the Pacific side of eastern Japan, due to wet southerly winds associated with the dominant high-pressure systems to the east of Japan. Meanwhile, since migrating high pressure systems often covered Japan and the influence of cold air was weak, monthly sunshine durations were above normal all over Japan. In particular, the Sea of Japan side from eastern to western Japan and Okinawa/Amami experienced the longest monthly sunshine durations for March since 1946.
- Monthly mean temperatures were above normal all over Japan, with the highest for March since 1946 recorded in eastern Japan.
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.