Dadahalou is a village in the southeastern Dikhil Region of Djibouti.

It is situated approximately 25 km (15 mi) eastern of Dikhil, the regional capital.

The village inhabitants belong to various mainly Afro-Asiatic speaking ethnic groups, with the Issa Somali predominant.

Most of the inhabitants earned their living through animal husbandry and commerce, and used a well for drinking water.

It is the lowest average temperature of the whole year and the driest month is December with 3 mm.