The effects of climate change on small island countries are affecting people in coastal areas through sea level rise, increasing heavy rain events, tropical cyclones and storm surges. These effects of climate change threaten the existence of many island countries, their peoples and cultures. They also alter ecosystems and natural environments in those countries. Small island developing states (SIDS) are a heterogenous group of countries but many of them are particularly at risk due to climate change. Those countries have been quite vocal in calling attention to the challenges they face from climate change. In a 2025 cross-national survey of 14,710 people across 55 small-island states and territories found an 89 to nearly 100% acceptance of human-caused climate change. However, when addressing smaller island communities, it is important to consider the empirical gap. Currently, there are issues with having adequate data that best supports these communities’ opinions, beliefs, and behavior on climate change. Geologically, it is difficult to survey these countries because of obstacles with service or low internet access. Addressing this empirical gap means that we perform essential research to better obtain perspective from these smaller countries, working together to find efficient solutions to slow climate change. For example, the Maldives and nations of the Caribbean and Pacific Islands are already experiencing considerable impacts of climate change. It is critical for them to implement climate change adaptation measures fast.
Some small and low population islands do not have the resources to protect their islands and natural resources. They experience climate hazards which impact on human health, livelihoods, and inhabitable space. This can lead to pressure to leave these islands but resources to do so are often lacking as well.
