Is climate change pushing governments to implement international treaties for the management of common resources? Yes, at least with respect to the Water Treaties (WTs) on common basins and rivers studied in this article. We found that climatic conditions, such as higher temperatures and lower precipitation, directly lead to a higher likelihood of signing WTs in the short, and even more so in the long run. By analyzing the impact of changes in climatic conditions observed between 1961-1975 and 1993-2007, we found that a one-degree Celsius increase in temperature has resulted in a 16.6% increase in the likelihood of signing WTs. These results are obtained for treaties related to environmental protection and economic development, and they also hold for "strong" treaties. JEL: F1, Q2