from temporary, seasonal to permanent migration to the warmer climates of the southern USA and Mexico, often benefiting from the lower cost of living . Temporary or semi- permanent labour migration, generally followed by remittances, has been an important part of livelihoods for rural areas in Mexico  and has been employed as a response to climate hazards . Drought in rural areas which are highly dependent on subsistence agriculture have observed migration to urban areas in Mexico . Evidence of international migration in response to climate hazards is sparse with difficulties in identifying a climate signal due to the multi-causal nature of migration decision making . There is limited evidence of extreme weather events or climate hazards on migration from Mexico to the USA .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report