"The launch of Ariane-5 Flight VA221 is postponed due to unfavorable weather conditions over Kourou, French Guiana," the Arianespace launch service provider said in its Twitter blog.
Another launch date will be decided "depending on the evolution of the weather conditions in Kourou," the company added.
Ariane 5 is operated as part of the Ariane program to deliver payloads into geostationary transfer orbit or low Earth orbit.
The payload of the Arianespace's sixth heavy-lift mission of 2014 comprises high-power multi-band US DirecTV-14 and India's GSAT-16 satellites.
Ten years and $ 7 billion have been spent on the development of Ariane- 5. To date, 62 successful launches have been carried out.