The resilience of our cities to weather extremes relies both on physical–environmental factors, as well as socio–economic factors. The last include communication processes among the members of an urban community. This paper presents a study that aims at understanding how to objectively assess the progress that is made through public outreach campaigns on urban resilience. According to this research, seizing the added value of science outreach efforts calls for an assessment method that takes into consideration the interactions between communication processes and other urban resilience drivers. The paper starts from presenting examples of methods to assess urban resilience to weather extremes. On the basis of this review, some metrics addressing communication issues are selected and first insights are given on evaluation techniques that can be used to understand if and how public outreach activities enhance urban resilience to weather extremes. The paper also outlines examples of target audiences in communication strategies aimed at enhancing resilience. Indeed effective monitoring of communication impact relies on an accurate audience definition. The paper finally presents a range of experiments led by the HM&Co laboratory to assess communication activities addressed to non–specialised audiences and tailored for an urban flood resilience project. Different assessment methods have been tested to apprehend their strengths and weaknesses in the framework of urban resilience strategies.