Scientific evidence unequivocally shows that human activities cause climate change, but some people still deny it. Using New Zealand Attitudes and Values Study data from 2018 and 2019 (
N
= 34,733), we examined segmentation profiles regarding beliefs and concern about climate change (‘Climate change is real’, ‘Climate change is caused by humans’, ‘I am deeply concerned about climate change’), the probabilities of transitioning to and from profiles over time, and the characteristics of individuals in each profile. Five profiles were identified with varying levels of climate change beliefs and concern. The largest profile (60.4% of respondents) had the highest levels of climate change beliefs and concern, while the smallest profile (3.7% of respondents) had the lowest. Over time, more people moved from profiles of lower into profiles of higher levels of climate change beliefs and concern. The profile with the highest levels was the most stable, with members having an 82.7% chance of staying in this profile over time. Compared to this group, members of the profile with the lowest levels of climate change beliefs and concern were more likely to be male, New Zealand European, parents, religious, and to endorse conservative and system-justifying ideologies. We discuss the implications of the findings.