Forecast of the time when cold air will flood into the North, ending hot weather
Forecast that the cold air wave on October 1st will be weak, so it will only cause a decrease in temperature of 2-4 degrees Celsius. Around October 4th, the cold air will be stronger, and the weather will change significantly.
According to Ms. Tran Thi Thuy Nga, Weather Forecast Department, National Center for Hydro-Meteorological Forecasting, today September 29, most areas across the country have weather conditions with little rain and a lot of sunshine.
The midland and delta areas of the Northern region; the area from Thanh Hoa to Da Nang city and eastern Quang Ngai will also have hot sun with the highest temperature reaching 35 - 36 degrees Celsius.
This weather condition will continue in the North tomorrow, September 30th. Around tomorrow night, a weak cold air mass will affect the North. This cold air mass will cause rain mainly in the Northern mountainous region from near dawn on October 1st to October 2nd. From October 1st, the temperature in the North will decrease by about 2 - 3 degrees Celsius compared to today.
The highest temperature still fluctuates in the range of 32 - 34 degrees Celsius, there is no longer widespread hot weather" - Ms. Nga analyzed the impact of cold air.
Ms. Thuy Nga added that in the Central region, the hot weather will continue for another 2 days. From October 2nd, the hot weather in the Central region will end, the temperature will only fluctuate in the range of 32 - 34 degrees Celsius.
From May 4th to October 10th, a stronger cold air wave will affect our country. This cold air wave is likely to cause rain for the entire Northern region, North Central region and Central Central region, causing the temperature to drop significantly, the weather to cool down. The lowest temperature at night in the Northern and North Central regions will decrease to only fluctuating in the range of 20 - 23 degrees Celsius, high mountainous areas below 20 degrees Celsius" - Ms. Nga said.
Forecasting the trend of El Nino, according to Ms. Ta Thi Hong An, Climate Forecasting Department, National Center for Hydro-Meteorological Forecasting, in the period from now until the end of 2026, El Nino is almost certain to continue to be maintained with very strong intensity and is likely to reach its peak. Then, in the first months of 2027 (i.e., from January to March), it is likely that El Nino will still be maintained at very strong intensity, although the probability and intensity tend to decrease gradually.
Forecast for the winter of 2026 - 2027, cold air tends to be weaker than normal.
The situation of severe cold and harmful cold is likely to appear later and less than the average of many years" - Ms. An assessed the winter weather trend.
Ms. Hong An especially emphasized that El Nino is very strong and can cause rain shortages in the period from now until the end of 2026, most clearly in the South Central Coast, Central Highlands and Southern regions, with a common shortage of about 20 - 40%. The rainy season in these areas is also likely to end early.
Coming to the first months of 2027, with little rain and hot weather that may come early in the southern provinces, it will lead to a very high risk of drought, water shortage and saltwater intrusion" - Ms. An advised.
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