The aim of this paper is to evaluate the performance of climate-themed mutual funds, taking into consideration the structure of their asset allocation, especially their geographical focus of investment. Additionally, the influence of differences in the industry allocations on the funds’ investment results is evaluated. Our analyses are based on climate-friendly mutual funds registered in Scandinavian countries (i.e., Denmark, Norway, and Sweden) during 2010–2019. To classify the analyzed funds as climate-friendly, we use the relative carbon footprint measure, which is a novelty in studies on ESG funds (meeting the environmental, social, and corporate governance criteria). In our analyses, we use the absolute performance as well as the relative performance methods. The obtained results confirm that geographical and industrial asset allocations significantly affect the performance of Scandinavian climate-friendly funds. On the basis of our studies, we may state that analyzed mutual funds do not get abnormal returns, and their performance mostly depends on the market state. Additionally, the unconditional firm size factor did not influence the return of particular portfolios, while the conditional firm size factor was significant for European, global, and North American funds. Moreover, the firm value factor was significant. Finally, the momentum factor was only significant for the emerging markets portfolio when it reached positive values.