The aim of this study is to determine how the provision of visualized climate change data affects the public's perceptions and anxiety regarding climate change. Specifically, 2000 randomly selected citizens were given information in either general graphical format (control group) or visualized data format (experimental group) by mail. Pre- and post-survey results showed that no statistically significant changes in perceptions and anxiety in the control group, while a significant increase in perceptions of climate change in the experimental group. The regression analysis was used with the change of perception as the dependent variable, and evaluation of information provision as the independent variables. Our findings show that familiarity with the design and readability of text were important in changing the perception.