Venus has an extremely hot and dense atmosphere. The average temperature at the surface is estimated to be around 467 °C (873 °F), with a pressure of about 93 atmospheres. The atmosphere is composed mostly of carbon dioxide (96%), with trace amounts of nitrogen, sulfur dioxide, and other gases. The clouds in the atmosphere are composed of sulfuric acid droplets.

The weather on Venus is characterized by extreme heat, with virtually no variation in temperature between the day and night. The high temperature is caused by the planet's proximity to the Sun and the greenhouse effect, which is caused by the presence of carbon dioxide and other heat-trapping gases in the atmosphere. The thick atmosphere also prevents the escape of heat from the surface, contributing to the extreme temperatures.

Venus is also known for its strong winds, which can reach speeds of up to 100 m/s (225 mph) at the surface. These winds are caused by the differential heating of the planet's surface, which creates differences in air pressure and leads to the formation of global wind patterns.

In summary, the weather on Venus is dominated by extreme heat, a dense and carbon dioxide-rich atmosphere, sulfuric acid clouds, and strong winds.