The most outstanding feature of the equatorial climate is the great uniformity of temperature throughout the year with no winters. This means that the temperature remains relatively constant throughout the year, with little variation between seasons.

1. Lack of winters:
In equatorial regions, there are no distinct winter seasons. Instead, the climate remains warm or hot throughout the year. This is due to the location of equatorial regions near the equator, where the sun's rays are more direct and intense, leading to higher temperatures.

2. Constant high temperatures:
Equatorial climates are characterized by consistently high temperatures. The average temperature in these regions ranges from 25°C to 28°C (77°F to 82°F) throughout the year. This stability in temperature is due to the fact that equatorial regions receive direct sunlight throughout the year, resulting in a continuous supply of heat.

3. Absence of seasons:
Equatorial regions do not experience the traditional four seasons like other parts of the world. Instead, they have two main seasons: the wet season and the dry season. However, these seasons do not correspond to the changes in temperature as they do in temperate regions. The temperature remains relatively constant, but the rainfall patterns vary.

4. High levels of rainfall:
Equatorial regions are known for their heavy precipitation. The warm temperatures and high humidity in these areas lead to the formation of large-scale convectional rainfall. This heavy rainfall helps to moderate the temperature by providing a cooling effect.

5. Low diurnal temperature range:
Equatorial regions have a very low diurnal temperature range, meaning that the difference between the daily maximum and minimum temperatures is minimal. This is because the equatorial regions receive an almost equal amount of sunlight throughout the year, resulting in a more consistent temperature pattern.

In conclusion, the most outstanding feature of the equatorial climate is the great uniformity of temperature throughout the year with no winters. This stable and warm climate, combined with heavy precipitation, creates lush and diverse ecosystems in equatorial regions.