The Panama Canal will cut the number of ships passing through it starting next month because of drought caused by the El Nino phenomenon, AFP reports.

From September 3, the number of vessels allowed through each day will fall from 36 to 34 due to low water levels in two artificial lakes that feed the canal, the Panama Canal Authority said. It will drop to 32 from September 15 on, the agency said.

Central America is in the throes of a severe drought driven by El Nino, a weather pattern that warms surface temperatures in the central and eastern equatorial Pacific Ocean, triggering worldwide changes in winds, atmospheric pressure and rainfall.

In the area of the canal rainfall from May to August is down by 34 percent from its historical average, the authority said, adding that El Nino could cut it even more.

The Panama Canal handles five percent of global maritime trade and around 40 percent of US container traffic.

The waterway is fed by rainwater, which is stored in two artificial lakes. But the canal operator said that "lower than forecast rainfall in the canal's watershed" called for measures to bolster the "long-term sustainability" of the waterway.

It has already implemented other water conservation measures, such as lowering the maximum draft—the vessel's depth in the water—for the largest ships.

El Nino occurs on average every two to seven years.

This year's El Nino is shaping up as one of the strongest on record.

Other countries in the region are also facing serious problems amid the drought. On Wednesday, the government of Honduras placed 80 percent of that Central American country on drought alert.