Purpose – The purpose of this paper is to assess sources of agricultural information used by farmers for climate change adaptation in the semi arid areas of Tanzania. Design/methodology/approach – Mixed quantitative and qualitative methods were deployed. Semi-structured interviews were used to collect qualitative and quantitative data from 100 farmers in three selected wards in Chamwino district in Tanzania. Focus groups were also used to collect qualitative data from 30 farmers in the same wards. Findings – The results showed that the major sources of information for farmers were predominantly local (neighbours and friends), followed by public extension services. Apart from radio and cell phones, advanced technologies (i.e. internet and e-mail) and printed materials were not used in the study area, despite their existence in the communities. Research limitations/implications – The study necessitates a need to conduct regular studies on preferred information source of agricultural information and knowledge, development of technologies and use multiple sources of knowledge and information (such as print and mass media) to deliver relevant information to farmers to enable them to adapt to climate change. Originality/value – The study provides a deep understanding of sources of agricultural information used by farmers in the semi arid area, which necessitates a need for demand-led and client-based information services, in order to meet the disparate farmers’ needs in this regime of climate change. These findings can serve as an example for the increasing use of mixed quantitative and qualitative in information research.