 Goggin scored his first try for Munster in their 39–22 away win against Southern Kings on 7 April 2018.He scored two tries in Munster's 64–7 win against Ulster in round 5 of the 2018–19 Pro14 on 29 September 2018.Goggin made his Champions Cup debut on 13 October 2018, starting in Munster's opening 2018–19 pool 2 fixture against English side Exeter Chiefs, which ended in a 10–10 draw in Sandy Park.