Wales have fallen six places to 71st in the Fifa world rankings, despite not playing in the past month.
While England stay unchanged in eighth, the Republic of Ireland in 12th and Northern Ireland continued in 111th place, both Wales and Scotland slid.
Scotland fell only one place, down to 88th, but Wales' slide was the second largest in the top 100.
They have been overtaken by teams from the Concacaf region who have been involved in Gold Cup qualifying action.
Both Cuba and Guatemala took giant leaps of 11 and eight places respectively to enter the top 60.
Wales face Austria in a World Cup qualifying double header next week, first in Cardiff on Saturday and then away the following Wednesday.
Austria are still ranked behind Wales in 80th place, despite rising two spots in the latest lists.
The top 10 remained largely unchanged, with Brazil topping the rankings, followed by France and Argentina.
The Czech Republic, Spain, Mexico and Holland follow - the Dutch slipping from joint sixth to seventh - with England eighth, Portugal ninth and Italy and the United States, who climb a place, sharing 10th.