The main aspect of countries near equator is HOT WEATHER. Another biggest challenge the countries near equator facing is UN-PREDICTABLE Weather. It's not easy to predict weather for equatorial countries.
Equator divides the earth into two halves, its recieves vertical rays of the sun throughout the year. Due to curvature of the earth,as we move away from the equator towards the poles the climate and weather gets cooler.
Basically it causes it to be either colder or warmer. The closer you get to the equator the more humid the weather is. Generally the farther you get the colder it is.