Weather, no matter where in the world you are, arises basically as a result of differences in temperature and humidity. Briefly, the sun heats the earth's surface up. Earth delivers this heat to the air that is set in motion and winds arise. From oceans (and lesser degree the earth surface), water evaporates as the wind then bring in the form of clouds.
When it is warmer over the equator than near the poles, it's because the sun above the equator is shining directly onto the soil surface, which then heats up considerably. The further away from the equator, the more indirect solar radiation would be and the less the sun to warm the earth's surface.
The angle that the sun's rays hit the Earth's surface to determine why the most part what the weather in the world. The strong warming of the equator not only leads to higher temperatures, but also to powerful air currents, which often brings high humidity.
Seasonal differences in the world's weather (eg summer and winter) because the Earth's axis is tilted 23.4 degrees relative to the poles: Half of the year, the Northern Hemisphere is tilted toward the sun. Solar radiation during this period is increased and it becomes summer in the northern hemisphere. The second half of the year tilted southern hemisphere instead of the sun and summer.
But the inclination of the Earth's axis also causes the formation of other seasonal differences, such as monsoon winds:
When the soil is heated arises mentioned wind. As the land mass warms faster than water, there will also be significant shifts in how much wind that formed over different areas, depending on whether it is winter or summer, and thus cold or hot. The big differences in temperatures gives rise to strong monsoon winds, which is either dry or humid depending on whether they formed over land or over water.