In the first week of the month, the continental cold high pressure will weaken, from December 4, it will strengthen again in the North of our country, then strengthen further to the South.
Storm No. 15 operating in the central East Sea will weaken and gradually dissipate. Subtropical high pressure has an axis through the Central region.
Therefore, in the Southern region, rain will appear mainly in some places, especially in the first days, there is a possibility of scattered rain, locally moderate rain, heavy rain. During thunderstorms, beware of tornadoes and strong gusts of wind.
In the middle of the month, the continental cold high pressure will weaken in the first days, from about December 15-16, it will strengthen again to the North of our country, then diffuse deep to the South. The subtropical high pressure will continue to have an axis through the Central region.
The rain tends to decrease, common in some places. Temperature changes little from the first week.
In the last week of the month, the continental cold high pressure continues to operate. The Northeast wind will have medium to strong intensity over the sea off the Southeast. Beware of the possibility of 1-2 more storms or tropical depressions appearing in the East Sea.
Therefore, rain continues to decrease, commonly in some places or no rain. Temperature changes little with the middle week.
The average temperature in December will change little compared to November, generally close to or lower than the average of many years. The highest temperature is generally from 30-33 degrees Celsius, some places are over 33 degrees Celsius. The lowest temperature is generally 20-25 degrees Celsius, some places are below 19 degrees Celsius.
Total rainfall in December decreased compared to November, generally close to or higher than the average of many years by 10-30%. The common number of rainy days is 5-12 days.
Warning of the possibility of dangerous weather phenomena and the possibility of impacting the environment, living conditions, infrastructure, and socio-economic activities.