Climate-related migration originates most often in rural areas in low- and middle-income countries, with migrant destinations usually being other rural areas or urban centres within their home countries  . Rural livelihoods and incomes based on farming, livestock rearing and/or natural resource collection are inherently sensitive to climate variability and change, creating greater potential for migration as a response . Drought events have been associated with periods of higher rural to urban migration within Mexico  and Senegal . Extreme temperatures are associated with higher rates of temporary rural out-migration in South Africa and in Bangladesh . In rural Tanzania, weather-related shocks to crop production have been observed to increase the likelihood of migration but typically only for households in the middle of community wealth distribution . Weather-related losses in rice production have been associated with small-percentage increases in internal migration in India  and the Philippines . In east Africa, temporary rural-urban labour migration does not show a strong response to climatic drivers . There is limited literature on mobility as adaptation in urban populations, with the focus being on resettlement of flood-prone informal settlements within cities .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report