El Niño had an impact on the Arab Spring. In El Niño, is an irregular climate cycle. The cycle begins when warm water in the western tropical Pacific Ocean moves eastwards close to the equator toward the west. Normally, this warm continues to drift near to Indonesia and the Philippines. During an El Niño the trade winds weaken, resulting in the pressures in the east and west to change, which causes a strong counter current. This leads into a feedback loop which supports El Niño.
This could have an effect on the Arab Spring, as a recent study suggests as people get warm and uncomfortable, they are more irritable which means they are more prone to fight.
Because of El Niño, there was a shortage of food. This caused the food prices to shoot up. The warm water rised up, which makes the clouds and rainstorms shift eastward.