The United Nations says hundreds of people have died and thousands of families have fled their homes since the coalition air war began on March 26 at the request of embattled President Abedrabbo Mansour Hadi.
Since yesterday, fighting has concentrated on four key southern cities, while Saudi-led warplanes also pounded Huthi rebel positions in the area.
The deadliest clashes took place in the city of Daleh, where 31 Huthis and 17 pro-Hadi forces were killed today, a local official said, also reporting a series of air strikes on rebel positions.
Taez, Yemen's third largest city after the capital Sanaa and second city Aden in the south, has seen fierce clashes over the past week, after having been largely spared in fighting that has spread across several provinces.
Today, coalition warplanes pounded Huthi positions in Taez, an AFP correspondent said, adding that the streets were empty and shops were closed.
Seven more Huthis were killed in an attack by tribesmen in the southern province of Shabwa.
In Aden, 11 Huthis and five pro-Hadi fighters were killed last night and this morning, military sources said.
The rebels, who seized Sanaa unopposed in September, have since expanded their control across the impoverished Arabian Peninsula country.
