
AI-generated summary
Affected by the northeasterly wind, the weather in Taiwan has turned cooler. Meteorological experts have made forecasts regarding the duration of the cooling, the scope of the cold air, and the weather during the National Day holiday.
The recent weather has been affected by the northeasterly wind. Jia Xingxing, director of the Taiwan Integrated Disaster Prevention Engineering Technology Consulting Company, pointed out that the current cooling of the first wave of the northeast monsoon is not obvious, but a real cooling period will occur next week. It is expected that the cold air will mainly affect the north of Hsinchu, and the low temperature in the open areas in the north will drop to about 18 degrees. As for the weather during the National Day holiday, Jia Xingxing also said that the general environment is expected to maintain a northeasterly wind. Except for some scattered short-term rain on the windward side, the weather will mostly be cloudy to sunny at noon.
Jia Xingxing posted a reminder on Facebook this morning that thin long sleeves are ready! However, compared with yesterday's data, there are several key new changes today - Typhoon Caiyun's path has deviated eastward, and its impact on the Japanese mainland has been greatly reduced; in addition to Typhoon Noro on the ocean, the follow-up development of Typhoon "Little Bear" needs to be observed; and the real cooling period in Taiwan next week will be from the 5th to the 8th, and the low temperature in the open area in the north will drop to about 18 degrees! In addition, everyone is concerned about the Double Ten National Day holiday weather and the progress of Japan and South Korea's red maples, which are also released first!
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Jia Xingxing also pointed out regarding the cooling schedule and temperature trend in Taiwan that the current cooling of the first wave of northeast monsoon is not obvious, and the high temperature in the north is still around 30 degrees. It is estimated that the key period for cooling will be from October 5th to 8th: the high temperature in the north will drop to 25~26 degrees, and the low temperature in the northern urban area will slowly drop to around 20 degrees in the morning and night. You need to wear a thin long sleeve or jacket when going out!
As for the cold air boundary, it mainly affects the north of Hsinchu and Yilan; the central and southern parts are only slightly affected, with daytime high temperatures still above 30 degrees, with slightly cooler mornings and evenings, and a slightly larger temperature difference between day and night. In addition, when the northeasterly wind prevails, there will be strong winds and occasional long waves along the coast. Please be sure to stay away from dangerous rocks when going to the beach!
Jia Xingxing mentioned that after Typhoon Caiyun turned north and moved to the northeast and east, it is far away from the Japanese mainland. The impact on the weather in Japan is not as obvious as originally expected. Friends traveling to Japan can relax a little. In addition, in addition to the cross-border "Noro" typhoon, "Little Bear" typhoon may still brew in the future, but it is currently estimated that it will not have a direct impact on Taiwan.
Regarding the weather during the Double Ten National Day holiday, Jia Xingxing also said that the general environment is expected to maintain a northeasterly wind, and there will be occasional local sporadic short-term rain on the north coast of Keelung, the northeast corner and Yilan. The weather in the western half and most other areas will be cloudy to sunny at noon, making it generally suitable for travel.
As for the latest progress of Japan and South Korea's consecutive holidays and red maples, Japan has more moisture in Kyushu and Shikoku during the National Day, and Tokyo and Osaka are relatively stable. The red maples are currently more obvious in the mountainous areas of Hokkaido and Tohoku; the plains of Tokyo, Kyoto, and Osaka that everyone often goes to will not gradually turn red until November.
During the Double Ten period in South Korea, the autumn air is crisp and cool in the morning and evening, with only Jeju Island having slightly more moisture. The peak period of red maples is expected to be from mid-October to early November.
AI outlook — possibilities, not facts
Taiwan will experience a real cooling period from October 5th to 8th, with the low temperature in the north of Hsinchu and Yilan dropping to around 18 degrees.
Likely · Within days
During the National Day holiday, the weather in most areas of Taiwan will be cloudy to sunny, with some brief rain in windy areas.
Likely · Within days
The red maples in Japan are currently more obvious in Hokkaido and the mountainous areas of Northeast China. The plains of Tokyo, Kyoto, and Osaka will have to wait until November to gradually turn red.
Likely · Within weeks

The Central Meteorological Observatory predicts that from October 3rd to 4th, there will be heavy rainfall in the south, with heavy to heavy rains in some areas in Guizhou, Hunan, Guangxi, Guangdong and other places. At the same time, affected by the cold air, winds will be stronger in the central and eastern regions and the eastern and southern sea areas. The temperature will drop by 4~6℃, and the local temperature will drop by 8~10℃. It is necessary to prevent the impact of flash floods, geological disasters and strong wind cooling on transportation, agriculture and animal husbandry.

On October 3, large-scale precipitation continued in the south and the rainfall intensified in some areas, with heavy rain or heavy rain; the rainfall in the south gradually weakened tomorrow and the day after tomorrow, while the northern and northeastern regions in the north received rainfall from west to east. Affected by cold air and rainy weather, the temperature in many places in the north and south of my country will reach record lows and the chill will be obvious. The public needs to add clothes in time and pay attention to traffic safety.

Meteorological expert Wu Derong pointed out that today and tomorrow (Saturday and Sunday) the water vapor will increase, and there will be heavy rainfall in the northern and eastern half of the country; the northeast monsoon will strengthen again next Monday and Tuesday, and the North Taiwan will become cooler, and there will be heavier rain on the windward side; from next Wednesday to Friday, due to the influence of radiation cooling, Qingdao will The low temperature in the morning may drop to about 16 degrees, and there may be local brief rainfall in the afternoon in the central and southern mountainous areas; the 26th Central Station "Caiyun" will move northward and has no chance of invading Taiwan. The Eastern Pacific Hurricane NOLO will enter the Western Pacific next Monday and pose no threat to Taiwan.

The Central Meteorological Administration pointed out that the northeast monsoon has weakened slightly today, and there will be local brief showers in the windward direction of Greater Taipei, the eastern half and the Hengchun Peninsula. Yilan, Hualien and Greater Taipei areas need to pay attention to local heavy rains, especially the probability of local heavy rains in the Yilan Mountains. There are also local showers from Hsinchu to Taichung, south of Chiayi and other mountainous areas in the afternoon, and there may be heavy rains. The high temperature is about 29 to 33 degrees, and the low temperature at night is 23 to 27 degrees. There is excessive ultraviolet rays, so please wear sunscreen and moisturize. Mild Typhoon No. 26 Caiyun is far away from Taiwan and has no impact. The air quality in places such as the northern and central parts of the country was rated as "fair", while the air quality in places such as Yilan and Huadong was rated as "good". The northeast monsoon will continue to affect the weather over the next week, with brief showers likely to occur in mountainous areas and the eastern half.

From October 2 to 8, the cold air will be active in my country, and the temperature in many places will hit record lows. The high temperature in the south will subside and the body will feel cooler. There is weak precipitation and large temperature differences in the north, and it is rainy in the south. The meteorological department has issued guidance on dressing and itinerary adjustments for National Day travel.

Lin De'en, a doctor of atmospheric sciences at National Taiwan University, said that the northeast monsoon will strengthen from today, with brief showers in the northern, northeastern and eastern regions, and the high temperature will drop slightly; the temperature in the central and southern parts will not drop significantly, and sporadic rainfall will mainly occur in the afternoon. The central and northern regions, Penghu, and Matsu areas have a chance of average winds above level 5 to 6 or gusts above level 7 to 8. Wave heights in the northern seas of Taiwan and the northern Taiwan Strait increased to about 1.5 to 2.5 meters. The northeast monsoon will weaken slightly tomorrow and the next two days, and the wave height will drop to 1 to 1.5 meters or less. The northeast monsoon will intensify again next Monday with greater intensity.