Latest month forecast: Unusual summer is still ongoing, Hokkaido's seasons are rapidly progressing

2025/10/02 22:14

On Thursday, the Japan Meteorological Agency announced the latest one-month forecast, which will provide an estimate of the weather for the next month.



The monthly average sea level pressure is expected to be high pressure from the continent to the east, and in the southeast of Japan, the Pacific High Pressure will likely recede to the east. Meanwhile, a low pressure system, a valley of atmospheric pressure from China to south of Japan, is expected near the Bering Sea.
For this reason, it is likely to be affected by low pressure and fronts on the northern and eastern Japan Sea side, while in Okinawa and Amami, it is likely to be affected by fronts and humid air.


Temperatures around 1500m above the air are likely to be covered in warm air in eastern Japan, western Japan, Okinawa and Amami, and are expected to be higher than normal. Meanwhile, near the Sea of Okhotsk, there are times when it is susceptible to cold air above, and is expected to be lower than normal.



On the 2nd, the Japan Meteorological Agency announced early weather information regarding high and low temperatures. In the Kanto region, west, Okinawa and Amami region, the temperature is expected to be high once every 10 years from around the 8th, and there will be some places where the highest temperature during the day will be over 30 C. The unusually lingering heat continues, and the seasons will likely progress slowly. When you are active outdoors, you still need to be careful of heat stroke. Also, the temperature difference between the mornings and evenings is likely to be large, so it is a good idea to choose clothes that are easy to regulate your body temperature and gradually change your clothes.

/BOn the other hand, in Hokkaido, it is expected that temperatures will reach levels once every 10 years from around the 9th, and will suddenly become more susceptible to cold air.
In Hokkaido, the expected maximum temperature is expected to continue to be above 25 C in Sapporo until around the 5th, but temperatures will drop sharply from next week onwards, and it is likely that more and more places will have a daytime high temperature below 15 C after the 9th. Please be careful of poor health due to sudden changes in temperature. Due to the effects of cold air, snow may occur on high-altitude mountains. The autumn leaves area is likely to expand little by little.



Weather will change over a short period of time for the next month, with sunny, cloudy and rainy days going to be replaced in a short period of time. Around Hokuriku, Okinawa and Amami tend to be susceptible to low pressure and fronts, and it is likely to have more rainfall than normal. The Sea of Japan side of Northern Japan tends to be cloudy and rainy, so make effective use of the precious sunlight on sunny days.