Climate plays an important role in controlling both the depositional and erosional settings. Tasmania provides spectacular outcrops where the rock record is well preserved and can be utilized to study the role of climate on sedimentation, especially, in the Late Cambrian and Early Ordovician. In this study a synthesis of field observation and mapping coupled with thin section analysis has been carried out to understand the climate control on the deposition of Late Cambrian–Early Ordovician siliciclastics which are exposed along the western and northwestern Tasmania, Australia. These siliciclastic sediments were deposited in syn-rift half grabens formed by Late Cambrian extension. The siliciclastics are mainly comprised of conglomerate, sandstone, and minor mudstone successions. Our analysis and interpretation suggest that these sediments were deposited in range of depositional settings. We have identified five broad facies that include sheet flows, braided fluvial, alluvial fans, intertidal and shallow marine environment. The stratigraphic build-ups of the study area suggest a strong influence of paleoclimate on the depositional processes. Globally, comparable sediments are different in term of depositional styles from their present day depositional analogues. This is principally due to different parameters controlling the overall depositional style, such as vegetation state, global sea level changes and climate conditions.