A Daubechies Wavelet–ARIMA Hybrid Model for Long-Term Monthly Rainfall Forecasting: Outperforming Machine-Learning Benchmarks in a Monsoon-Dominated Urban Watershed
Accurate monthly rainfall prediction is essential for water-resource planning, agricultural management, and flood-hazard mitigation, particularly in rapidly urbanizing tropical cities. This study presents a hybrid wavelet-based ARIMA model (HWAM) that couples discrete wavelet decomposition with individually optimiz...