4Music called the song "an absolute banger" and said "the former
X Factor star has already began cracking the American market with her
previous album, and with her latest offering—a catchy ballad with heart and soul—a massive break seems inevitable." Kalyna Taras of
ANDPOP stated "Even if you’re not the romantic type, 'Sirens' will move you. Cher's powerful, raspy voice was made for this song. A ballad about looking for love and finding a peaceful moment with the one you love, 'Sirens' hits the heart." Online site
Sugarscape rated the song 10/10, claiming it "ridiculously amazing" and "quite incredible."
Idolator's Carl Williott said "the production is pretty standard pop fare, with a few hints of electronics whooshing in and out, but everything evaporates for the first bars of its truly triumphant chorus, before it all swoops back in to lift the vocals even higher" and further claimed that "it was completely worth the wait." Bradley Stern of MuuMuse said that "[Sirens] is a soaring follow–up to '
I Wish'—and it's a proper SMASH," going on to state "striding into the speakers on a gentle guitar strum, Lloyd drops the swag shtick and supplies us instead with a full–bodied, super grown up midtempo power ballad of mega–proportions: That chorus is just, like,
whooooooosh," and further labelling it "massive and glorious." ==Music video==