Despite evidence of extensive and growing concern about climate change, citizens remain relatively unlikely to discuss it in everyday conversation, presenting a puzzle to commentators and researchers. Different explanations of climate silence have been suggested, most notably from social psychology and from political economy perspectives, which posit forms of cultural control. However, there is limited evidence about the relational contexts of everyday climate talk and the meanings that people themselves attach to it. In this article, we analyse data from new qualitative research and explore how climate talk is patterned, forms of self-silencing and the meanings attached to climate talk, with reference to its interactional and relational contexts. We argue that social interactional contexts, relational work and mundane forms of practical constraint play an under-investigated yet crucial role in limiting climate talk.