Refer to figure.
Tropical climates are known for being hot and humid all year round. These climates are usually found in the tropics, the part of the world between the Tropics of Cancer and Capricorn. However, not every place within the tropics has a true tropical climate.

A tropical climate is typically defined as one where the average surface temperature never drops below 18°C, even in the coolest month. The average yearly temperature in these regions is usually around 25°C, and there is very little change in temperature across the seasons.

In January, many tropical areas, especially those closer to the Equator or in the Southern Hemisphere, are in the middle of their wet season. That means not only are the temperatures high, but the humidity is also very high, creating sticky and often stormy conditions.

A key weather feature in this zone is the Intertropical Convergence Zone (ITCZ), a low-pressure area that circles the Earth near the Equator. It shifts north and south over the year, passing over equatorial regions twice annually, which brings two rainy seasons to those areas.