<p>This study examines the influence of internet adoption on cereal production across 44 Sub-Saharan African (SSA) countries using the most recently available data from 2000 to 2022, with a focus on spatial spillovers and climate variability. While existing studies largely assess the localized impacts of digital adoption, the spatial diffusion of digital adoption in agricultural productivity remains underexplored. To address this gap, we employ a Spatial Durbin Model (SDM) with two-way fixed effects to capture both direct and cross-border effects of internet use on cereal output. The study integrates drought intensity using a standardized precipitation-evapotranspiration index (SPEI) and introduces the distance-based spatial decay approach to evaluate how geographic proximity shapes the diffusion of digital gains. Results show that internet adoption in one country significantly enhances agricultural productivity in neighboring countries, particularly in lower-middle-income and Southern African economies. However, the spillover effects are weakened during drought periods, underscoring the moderating role of climate stress. This research makes both methodological and empirical contributions by combining spatial econometric analysis with environmental interaction effects, an approach rarely applied in African agricultural studies. It highlights the importance of regional interconnectivity in digital transformation and offers actionable insights for designing climate-resilient, cross-border digital infrastructure strategies. The findings have direct implications for food security policy, particularly in contexts where environmental vulnerability and digital inequality intersect.</p>