This experiment was carried out using 900 Dandarawi chicken eggs to study the hatch performance of different eggs weight as affected by light intensity during incubation. Incubating eggs comprising of small (<42g), medium (42-46) and large (>46) weight categories incubated under the recommended conditions of the chicken eggs with light intensity 10-20 luxes or 50-60 luxes emitted from incandescent bulbs. The obtained results showed insignificant differences among eggs size groups for late dead embryo, dead in shell, chemical composition of embryo and chick quality scores. However, highly significant differences were observed in hatchability, early dead embryo, piped egg, egg weight loss, embryo weight percentages, hatch time and chick weight or weight loss, which improved in medium sized eggs. In regard to the effect of light intensity, it significant affected hatchability, embryo growth and moisture content of embryo, which improved in eggs incubated with light intensity 50-60 luxes. However it is not significant differences in dead embryo, dead in shell, egg weight loss, hatch time, chick weight or weight loss, chick quality scores. Insignificant interactions of incubated light intensity× egg weight groups were existed in most studied traits. It could be concluded that the suitable results of hatchability and hatch performance were obtained for medium sized eggs of Dandarawi chicken with incubated light intensity 50-60 luxes