I recently replaced the hubs and bearings on my boat trailer and fitted new Bearing Buddies on as well. What I've noticed is that grease will leak out of small holes on the axles. The hub seals are good and no grease leaking there, but just from these small holes.

Is this normal?

Thanks.

Yes, this is normal. The weep holes are there to prevent you from overfilling the hub (and blowing out the axle seal) with grease. You can stop pumping the grease gun when the grease starts coming out the weep holes - the hubs are full. You will want to wipe off any excess grease or plan on it getting all over your wheels.