Why should astronauts avoid July and August when they return to Earth?

Avoid high temperature and rainstorm season. The main reasons why astronauts return to Earth to avoid July and August are:

1. Avoid the influence of high temperature: July and August are high temperature seasons in many areas. High temperature has a negative impact on astronauts and the equipment of the return capsule, which increases the thermal stress and the challenge of thermal management.

2. Avoid storm season: In July and August, severe weather conditions such as thunderstorms and strong winds often occur, which brings risks to safe landing operations, so avoiding landing in storm season can reduce potential safety hazards.