It is situated on the Pacific coastal plain, at the entrance of the Gulf of California and lies in the heart of a rich agricultural region, Fort Valley.

Ahome Municipality is subdivided in 7 sindicaturas: The climate is mildly hot and humid, hardly modified by rainfall.

In the last twenty-eight years, the lowest recorded temperature was 5 °C (41 °F) and the highest was 43 °C (109.4 °F), the hottest months being from July to October and the coolest from November to February.

In the period of reference, rainfall averaged 302.2 mm (11.9 inches) annually, with the rainiest months being from July to October.

The prevailing winds in the region are oriented in a southwesterly direction with an approximate speed of one meter per second (2.23 mph).