Leone Stars moved above Antigua and Barbuda, Azerbaijan, Lithuania and Zimbabwe who all fell down in the August ranking.
FIFA’s official website showed that Sierra Leone moved up seven places, with a new average of 304 points. Meanwhile, the country moves a step above in the Africa ranking from 31st position to 30th.
Meanwhile, Argentina remains ranked as the world’s best team, while Belgium overtook 2014 World Cup winners Germany into second place.
Jamaica climbed the most places up the table after their efforts in reaching the final of the Gold Cup which moved the Reggae Boyz to 55th position, an ascent of 21 places.
Colombia, Brazil, Portugal, Romania, England, Wales and Copa America champions Chile make up the rest of the top 10 in the latest FIFA World Rankings.
Spain, the Netherlands, Croatia, Slovakia and Austria all sit between Italy and the top 10.