Why did the typhoon land in China this year later than in previous years?

I recently read the news and discovered that another typhoon has landed in Zhejiang, and many coastal cities have issued typhoon orange warnings. But careful friends have discovered that the typhoon that landed in China this year was later than in previous years. Why do you say this? There is actually evidence to follow.

First of all, on July 6, 2016, a wave warning was issued in coastal areas of my country. On July 11, Super Typhoon Nibert No. 1 landed in coastal cities in my country, in the south of Zhejiang and in the north of Fujian. There were huge winds and waves in the coastal waters. Nibert's landing received a lot of attention during that period and prompted a blue storm surge warning.

In addition, in January 2017, the typhoon code-named Meihua landed in southeastern Hainan and southern Yunnan in my country. It was also affected in Tibet. These areas had moderate to heavy rains, and some areas There were also heavy rains, with precipitation generally reaching between 50 mm and 90 mm.

Secondly, we had another typhoon in August 2019, and this time the typhoon did come later than in previous years. The typhoon caused huge waves on the sea, and also caused widespread strong winds and heavy rain. Although this typhoon arrived belatedly, it came with such force that many people were intimidated.

In fact, the typhoon is later than in previous years. It is completely affected by the ocean temperature and other conditions, and it is also affected by the season, so it is later than in previous years. However, due to the different degrees of heating of water vapor and sea water, various uncontrollable situations occur. And our monitoring equipment can only monitor the intensity of the typhoon when it comes, and cannot affect the time of the typhoon's arrival.