An absorbent article (20) comprising an absorbent core (28) having at least two longitudinally extending channel-forming areas (26a,b) and a wetness indicator (100). The core wrap comprises a top side (16) and a bottom side (16'), which are attached to each other through areas (26a,b) substantially free of absorbent material, so that when the absorbent material (60) swells upon absorption of a liquid the core wrap forms channels (26'a,b) along these areas (26a,b) substantially free of absorbent material. The wetness indicator is placed between the channel-forming areas (26a,b) or between at least one channel-forming area (26a,b) and at least one longitudinally extending side edge (13, 14) of the article, as seen for the exterior of the article.
