Tropical cyclones (TCs) are devastating weather phenomena that can cause vast socio-economic impacts. Here the term TC encompasses tropical depressions, tropical storms, hurricanes and typhoons. Each TC is predominantly influenced by synoptic-scale conditions, whereas, TC activity from sub-seasonal to decadal timescales is influenced by large-scale climate variability. Advances in understanding and prediction of TC activity enable us to make meaningful TC predictions with longer lead time. Since TCs in different basins have similarities and differences in terms of how large-scale conditions modulate TC activity, comprehensive understanding of TC variability in different basins helps deepen our knowledge of TC predictability and enhances our capability for TC prediction. This session offers a unique opportunity for research and operational communities to share recent progress in climate monitoring and prediction of TCs in all basins from sub-seasonal to decadal timescales. Both prediction and process understanding studies are welcomed.