Information found online is often contextualized by social interactions and cues (such as likes, emojis, and shares), which give added meaning and serve as heuristic cues for interpretation and information processing. To understand how humor can be used as a tactic for communicating climate information, we highlight key theories in (science) communication that draw from disciplines such as social psychology and political science related to understanding climate science information and its impact on public attitudes in these online spaces. Such theories include the knowledge deficit model, framing, and motivated reasoning. Using these theoretical frameworks, we turn to the role of humor in climate science communication. After a brief description of various theories of humor appreciation and types of humor, we discuss how studies of humor as a tactic of science communication can be used within the framework of strategic science communication. Humor affects people’s perceptions of the source of content, the content itself, and how they might engage it. We synthesize research on various types of humor and science topics to highlight opportunities for future scholarship, especially as it pertains to climate (mis)information.