Climate Report over Japan
- Monthly mean temperatures were significantly above normal in northern/eastern Japan and were above normal in western Japan and in Okinawa/Amami, because warm-air inflow was stronger than normal and the regions were covered by warm-air in July. Monthly mean temperatures were the highest in northern Japan on record for July since 1946. The monthly anomaly of the average temperature over Japan was +1.91°C, the highest on record for July since 1898.
- On the Sea of Japan side of northern/eastern/western Japan, to the middle of July, some areas experienced record-breaking heavy rainfall due to low-pressure systems and fronts.
- Monthly precipitation amounts were below normal on the Pacific side of northern/eastern/western Japan and monthly sunshine durations were significantly above normal on the Pacific side of northern/eastern Japan and on the Sea of Japan side of eastern Japan, and above normal on the Sea of Japan side of northern Japan and on the Pacific side of western Japan, because the regions were less affected by low-pressure systems and stationary front in July.
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.