Southerly rhymes with:
brotherly, motherly, brotherly, eatherly, fatherly, featherly, grandfatherly, grandmotherly, heatherly, matherly, motherly, northerly, weatherly, wetherly
Southerly sounds like:
satterlee, satterly, sectoral, shetterly, sitterly, stairwell, statutorily, sterile, sterle, storlie, strahl, strahle, straley, strehl, strehle, strehlow, strelow, strohl, strole, stroll, strollo