Gently brush the bees covering the honeycomb back into the
hive. You can use a brush made of chicken feathers or a brush
made of grass.
Only select honeycomb with well sealed honey for harvesting.
It is best to harvest honey in the cool of the evening, so
disturbed bees have the night to settle down again. Harvesting
honey at night makes it hard to see if the honey being harvested
is good quality.
Harvesting just after the rain will increase the moisture content
of honey and reduce its quality.
Basic Beekeeping Manual 1: How to Harvest Quality Honey (© Author Pam Gregory, who offers this as her gift to
beekeepers in developing countries)