Raymond, a Category 3 hurricane with maximum sustained winds of 125 mph, was stationary about 105 miles south-southwest of Zihuatanejo and about 160 miles west-southwest of Acapulco, the National Hurricane Center in Miami said in its 2 p.m. PDT advisory.
A hurricane watch was posted for Tecpan de Galeana to Lazaro Cardenas.
A hurricane watch was in effect for Acapulco to Tecpan de Galeana.
A tropical storm warning was posted for Acapulco to Tecpan de Galeana.
While Raymond was stationary Monday afternoon, forecasters said a slow, erratic motion was expected during the next day or so, and Raymond could near the Mexican coast within the hurricane warning area later Monday and Tuesday.
The storm could strengthen during the next day or so, forecasters said. Gradual weakening was expected to begin late Wednesday and Thursday.
Swells generated by Raymond were affecting parts of the south-central coast of Mexico. The swells likely could cause life-threatening surf and rip current conditions, forecasters said.
A storm surge, accompanied by large and destructive waves, was expected to produce significant coastal flooding within the advisory areas, the hurricane center said.
Raymond is expected to produce 4 to 8 inches of rain, with as much as 12 inches possible in the Mexican states of Guerrero and Michoacan.