MSC said in a statement that it wanted to "avoid any discomfort to the passengers."
According to meteorology site Weather Underground, Rio is in the mid 80s today -- with the heat index climbing into the 90s. Weather forecasts over the next few days for the cruise's other scheduled calls, Recife, Maceio and Salvador de Bahaia, are all above 80 degrees.
In addition to not sweltering in their cabins, passengers will get a full refund and a 50 percent discount on a future cruise. MSC Brazil is assisting passengers with their travel needs and providing overnight accommodations.
MSC Musica will resume service again on December 26, added the line in the statement. Musica will remain in South America until April, when it will reposition to Europe for a season of Eastern Mediterranean and Greek Isles cruises.
Cruise lines know not to come between passengers and their cool air. Earlier this year, Cruise Critic members posted en masse about stifling cabins caused by A/C issue on Holland America's Veendam. The line responded that all air-conditioning systems were functioning properly, but following "a small number of guest comments on a recent sailing in very hot weather, the system was checked and adjustments were made to ensure the continued comfort of our guests onboard."
We'd like to know: If you were about to cruise a hot weather destination like Brazil or the Caribbean, and the A/C malfunctioned, would you still want to go? Weigh in here.
--by Dan Askin, Associate Editor