Global flooding is a major threat facing many countries due to climate change. Changes in the earth’s temperature which are increasing due to greenhouse gas emissions not only affect air temperature but also change global weather patterns. One of the most visible impacts of this phenomenon is the increase in the frequency and intensity of floods in various parts of the world. Changing weather patterns have direct consequences for hydrological systems. Unexpected rainfall, whether it is a short period of heavy rain or a delayed rainy season, causes devastating flash floods. In 2020, for example, Southeast Asia experienced several major floods, with thousands of people homeless and vital infrastructure destroyed. Areas previously unaccustomed to flooding are now trapped in a cycle of disasters that harm communities and the economy. One of the main causes of this increase is the increasing amount of water evaporating due to global warming. A warmer atmosphere is able to hold more water vapor, which means when rain occurs, the potential for stronger storms increases. Data shows that extreme rainfall increases by up to 10% per degree Celsius increase in global temperature. Additionally, melting ice in polar regions contributes to rising sea levels, exacerbating the risk of coastal flooding. Cities located near the coast, such as Jakarta, Miami and Bangkok, face serious threats from flooding triggered by increasing tidal waves due to climate change. Mitigation measures are needed to reduce the impact of global flooding. Development of green infrastructure, such as planting trees and good drainage management, can help reduce water runoff. In addition, the adoption of environmentally friendly technology in agriculture can prevent landslides that often occur during heavy rains, increasing food security and community resilience. Changes in government policy are also very important. Countries should work together to strengthen early warning systems and more efficient implementation of emergency response plans. The public must be involved in climate change education to increase awareness of the dangers of flooding. Plastic and waste that pollute rivers worsen the impact of flooding by blocking water flow. Therefore, waste reduction programs must be intensified. Individual awareness in reducing plastic use contributes to maintaining river ecosystems and reducing flood risk. Analysis of the economic impact of global flooding is also urgently needed. High recovery costs can strain government budgets, and lost productivity rocks local economies. Therefore, investing in environmental health solutions and disaster-resistant infrastructure is considered a wise preventive measure. Overall, the impact of climate change on global weather patterns and flooding cannot be underestimated. Global cooperation, technological innovation and public awareness are the keys to minimizing risks and mitigating the impacts. Proactive efforts will make the world better prepared to face future flood challenges.