The Mormon Church has set new milestones for four temples in Mexico, Brazil, Idaho and South Carolina, including an open house and dedication date for the San Luis Potosí Mexico Temple, a groundbreaking for the Santos Brazil Temple and site details for temples planned in Caldwell and Greenville.
For Latter-day Saints in those places, the announcement turns long-awaited plans into a public calendar. The first confirmed event comes on Saturday, August 1, 2026, when Elder Ronald M. Barcellos will preside at the Santos Brazil Temple groundbreaking. In San Luis Potosí, the temple open house begins with a media day on Monday, September 21, followed by invited guest tours on September 22 and 23 and public tours from Thursday, September 24, through Saturday, October 10, excluding Sundays and Saturday, October 3. Elder Dale G. Renlund will preside at the dedication on Sunday, November 1, 2026, at 10 a.m., and the dedicatory session will be broadcast to congregations in the temple district at 2 p.m. that day.
The San Luis Potosí temple is one of 27 temples in operation, under construction or announced in Mexico, where more than 1.5 million Latter-day Saints meet in around 1,800 congregations. Brazil has more than 1.5 million Church members meeting in over 2,000 congregations, while Idaho is home to over 480,000 Latter-day Saints in around 1,300 congregations. President Russell M. Nelson announced the San Luis Potosí and Santos temples in April 2022, then announced the Caldwell Idaho Temple and the Greenville South Carolina Temple in April 2025.
The newer temple notices give more detail on where two of those projects will rise, but not when they will be finished. The Caldwell Idaho Temple will be built on a 19.2-acre site at the southwest corner of W Orchard Ave. and S. Florida Ave. in Canyon County, Idaho, with plans for an 82,000-square-foot, multistory temple that includes a meetinghouse and an ancillary building. The Greenville South Carolina Temple was also given a location and exterior rendering, but no completion date was released for either temple.
That leaves the schedule clearest in Mexico and Brazil, where the church has now fixed the next public steps. San Luis Potosí is headed toward its November dedication, and the next milestone after that is the August 1 groundbreaking in Santos. For families and congregations waiting in Idaho and South Carolina, the key question remains the same: the sites are known, the designs are out, but the finish line is still not.
