The Kodaikanal Observatory is located at an altitude of 2343 m in the Palani range of hills in southern India.

Air connection:
The nearest airport to the Kodaikanal Observatory is Madurai (130km from Kodaikanal Observatory), in the state of Tamil Nadu.

Rail connection:
The nearest railway station is Kodaikanal Road (80km from Kodaikanal observatory).

Road connection:
Kodaikanal Observatory is located 4km from Kodaikanal town and may be reached by road from Bangalore, via Salem and Dindigul and from Madurai via Kodaikanal road.