Born in Al Aaroui, Jahouh started his career with Ittihad Khemisset.[4] In 2010, he joined Moghreb Tétouan.[5] Jahouh went on to win the 2011–12 Botola and the 2013–14 Botola with Moghreb.[6] On 28 September 2012, he joined Emirati club Al-Ittihad Kalba on a year long loan deal.[7] In January 2013, he was released by Kalba.[8][9] On 8 September 2015, he signed with Raja Casablanca and penned a three-year contract.[9] After being used sparingly by Casablanca, he joined FUS Rabat on 25 July 2016 on a three-year contract.[10] On 31 October, he scored his first goal for the club in a 2–2 draw against Casablanca.[11]
Goa
On 2 August 2017, Jahouh joined Indian Super League side Goa on a season-long loan. He became the first Moroccan footballer to play in India.[12] During the season, he refused to display a sponsor logo of an alcohol brand on match shirt citing religious reasons.[13] Jahouh extended his stay at the club after a successful debut season on loan.[14] In May 2019, he signed a one-year contract extension with the club.[15] With most successful tackles and passes, Jahouh played a pivotol role in Goa's top of the league finish in the 2019–20 Indian Super League.[16]
Mumbai City
On 22 October 2020, Mumbai City announced that they had signed Jahouh on a two-year deal.[17]
On 21 November, Jahouh made his debut for the club in the Indian Super League against NorthEast United, in a narrow 1–0 defeat. It was a debut to forget as was sent off with a straight red, a couple of minutes before halftime for his studs-up challenge on Khassa Camara.[18][19]
He won the Indian Super League Winners Shield and the Indian Super League title in his first season with the club, completing a domestic double.[20]
Jahouh made his first appearance of the 2021–22 Indian Super League season, on 22 November 2021, against Goa, which ended in a resounding 3–0 win.[21][22] Five days later, he scored his first goal for the club, against Hyderabad, in a 3–1 defeat. He opened the scoring with a thumping right-footed finish after the Hyderabad players failed to clear their lines inside the penalty area.[23][24]
On 11 February, Jahouh signed a one-year contract extension, keeping him at the club until the end of the 2022–23 season.[25] He registered three goals along with seven assists in 15 league appearances, as the Islanders finished on fifth place and failed to qualify for the playoffs.[26]