Mormon Newsroom shared this today:
“Mormon male missionaries, or ‘elders,’ are recognized in many parts of the world by their suits and black name tags. However, in some parts of world with hot climates, suit coats are impractical.
“To reduce the financial burden on missionaries and their families, elders who are called to serve in missions identified by the Church as having hot climates will no longer be required to purchase or wear suit coats. Missionaries called to serve in these missions will be notified in their call packets.”
Mormon Newsroom also provided a list of missions where suit coats are no longer required. We’ve provided an image of that list below, or go to their blog to download the PDF version.