This paper focuses on climate variability and changes as a reason for the continued migration of people from Bangladesh to India and attempts to understand the vulnerability of people using the concepts of nested vulnerability. This paper argues that the vulnerability of specific individuals and communities is not geographically bounded but, rather, is connected at different scales. Among the many causes of vulnerability of people, cross border migration due to climate change might increase the susceptibility of people to climate change in both the countries. Without adequate bilateral and multilateral institutional arrangements in place to protect of climate migrants, it will pose greater risks to India.