06/07/2026
TROPICAL AFRICA | AgroClimate Intelligence
Following the below-normal rainfall conditions observed across parts of tropical Africa over the past two weeks, as consistently indicated by global weather and climate models, the suppressing atmospheric pattern has now weakened. Normal to above-normal rainfall is therefore expected to become increasingly established across much of the region.
As highlighted in our earlier outlook, the temporary rainfall suppression was primarily driven by large-scale upper-level convergence and enhanced subsidence of relatively cool, dry air over tropical Africa and the adjacent Atlantic Ocean. This atmospheric configuration was associated with the suppressing phase and propagation of the Madden–Julian Oscillation (MJO).
The MJO suppressing phase has now shifted eastward toward the Indian Ocean and East Africa, as the active phase is positioned over western Pacific, allowing more favorable atmospheric conditions for convection to redevelop. Consequently, rainfall activity is expected to strengthen across much of tropical Africa, particularly over West and Central Africa.
This marks a favorable window for farmers to intensify planting activities where adequate soil moisture has been restored, while continuing to monitor local weather conditions.
Based on the latest outputs from the NMME and CFSv2 climate models, together with correlation-weighted anomaly forecasts for West Africa, the probability of widespread July–August dry spells (including the seasonal August Break) of West-Africa remains relatively low, as above-normal rainfall signals continue to dominate. However, localized and relatively weak rainfall interruptions may still occur from mid-July through early August across parts of southern Ghana, Côte d'Ivoire, eastern Liberia, southern Togo, southern Benin, and portions of southwestern Nigeria.
Looking ahead, the persistence of wetter-than-normal conditions is also increasing the potential for flood events during the August–October period. We will continue to monitor this evolving risk and provide timely AgroClimate Intelligence updates.
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