 Migration trends in the Mediterranean region are constantly in flux. Regular monitoring of arrivals provides the basis for further analysis. The DTM analyzes major monthly trends in migrant and refugee arrivals to Italy, along the central Mediterranean route, the CMR, and to Spain, along the western Mediterranean route, the WMR. Our analysis is based on arrivals data that is collected by national authorities, IOM offices, and the DTM. These data do not represent total mobility trends toward Europe, and observations based on these data should be considered indicative of possible migration trends. Roots taken by migrants and refugees are influenced by a constellation of different factors. These might include but are not limited to adjustments to conditions while on the move, as well as policy changes that might impact mobility. For example, in contrast to 2015, which marked the peak of registered arrivals toward Europe, subsequent years saw a drastic and declining trend in total arrival numbers. Between 2017 and mid-2019, over 90% of all migration flows in west and central Africa were intra-regional or within the same country. The DTM recommends that humanitarian agencies, national authorities, and national organizations use the existing data and analysis on mobility trends to better inform their decisions, policies, and programming.