# West African rainy season: floods, storms, and mitigation > Live situation record from CLSTR: https://clstr.news/situations/west-african-rainfall-outlook-and-drought-risk > Updated: 2026-08-08T15:05:58.000Z. Sources: 27. Developments: 11. Throughout the 2026 rainy season, West African nations have faced fluctuating precipitation, intense storm periods, and ongoing flood mitigation efforts. In June, meteorologists in Senegal and Mali warned of irregular rainfall and flood hazards. Ghana also issued forecasts for thunderstorms and flash flooding risks. In Senegal, agricultural impacts were noted as irrigation gaps and delayed rains initially affected mango ripening and fruit size, though officials expected a strong overall harvest despite fruit-fly management efforts. Infrastructure responses continued through July. Niger mobilized road maintenance crews to safeguard the national network ahead of heavy rains. In Senegal, authorities accelerated drainage and water-flow projects in Saint-Louis and Touba, aiming for completion by mid-July to prepare for the August Grand Magal. Parallel drainage works were also launched in M'Bahiakro, Côte d'Ivoire, as part of a multi-year sanitation programme. Weather patterns remained volatile. After a brief period of stable conditions in early July, Senegal experienced multiple waves of intense rain and thunderstorms. ANACIM issued several warnings throughout July and August, covering various regions from Dakar to the southern borders. In early August, Guinea's meteorological agency issued severe alerts for heavy thunderstorms and high flooding risks in Lower Guinea, including Conakry. Concurrent warnings for Senegal highlighted significant activity in the south, even as central and northern regions faced high temperatures. ## Timeline ### 2026-08-08: Weather alerts issued for heavy rain and flooding in Guinea and Senegal Weather agencies in Guinea and Senegal have issued alerts for heavy thunderstorms, high flooding risks, and intense rainfall expected across several regions in early August 2026. 7 sources. https://clstr.news/cluster/weather-alerts-issued-for-heavy-rain-and-flooding-in-guinea-and-senegal ### 2026-07-31: Severe Weather Alerts Issued for Senegal and France Weather services warned of rain and thunderstorms in Senegal and violent storms with hail and strong winds in eastern France on 1 August 2026. 2 sources. https://clstr.news/cluster/severe-weather-alerts-issued-for-senegal-and-france ### 2026-07-22: ANACIM issues thunderstorm warning for multiple regions of Senegal ANACIM warns of thunderstorms and heavy rain across Senegal from 24‑26 July, affecting regions from Dakar to Ziguinchor. Residents, farmers, drivers and fishermen are urged to stay vigilant. 3 sources. https://clstr.news/cluster/anacim-issues-thunderstorm-warning-for-multiple-regions-of-senegal ### 2026-07-19: Senegal's ANACIM forecasts widespread rain and storms across multiple regions ANACIM warns of heavy rain and thunderstorms tonight across Tambacounda, Matam, Kaffrine, Kédougou and other Senegalese regions, with temperatures climbing to 40 °C in the centre and east. 2 sources. https://clstr.news/cluster/senegals-anacim-forecasts-widespread-rain-and-storms-across-multiple-regions ### 2026-07-13: Flood mitigation projects launched in Touba (Senegal) and M'Bahiakro (Côte d'Ivoire) Touba, Senegal, and M'Bahiakro, Côte d'Ivoire, have started major flood‑control works to protect residents ahead of seasonal rains. 2 sources. https://clstr.news/cluster/touba-ramps-up-floodcontrol-works-ahead-of-august-magal ### 2026-07-10: ANACIM warns of heavy rain and thunderstorms across Senegal July 12‑18, 2026 ANACIM forecasts intense rain‑storm activity across Senegal from 12‑18 July 2026, urging safety precautions for exams, agriculture, transport and flood‑prone communities. 3 sources. https://clstr.news/cluster/anacim-warns-of-heavy-rain-and-thunderstorms-across-senegal-july-1218-2026 ### 2026-07-09: Senegal mango harvest faces early setbacks but expects large volumes Senegal's mango season started in June with irrigation and rain delays causing slow ripening and spot blemishes, but officials expect high yields; no phytosanitary alerts and fruit‑fly controls are effective. 3 sources. https://clstr.news/cluster/senegal-mango-harvest-faces-early-setbacks-but-expects-large-volumes ### 2026-07-04: Senegal forecast limited rain, mostly dry conditions July 4-10, 2026 Anacim says most of Senegal will see a rain pause July 4‑10 2026, with a dry north, possible southern thunderstorms and limited mid‑week showers in central and eastern zones. 2 sources. https://clstr.news/cluster/senegal-forecast-limited-rain-mostly-dry-conditions-july-4-10-2026 ### 2026-07-02: West African governments ramp up rainy‑season infrastructure work Niger’s transport minister mobilised staff to protect roads before July rains, while Senegal’s ONAS chief reported 70‑75% completion of drainage works ahead of the rainy season. 4 sources. https://clstr.news/cluster/west-african-governments-ramp-up-rainyseason-infrastructure-work ### 2026-06-21: Ghana faces rain and thunderstorms as GMet issues forecast GMet forecasts rain, thunderstorms and cloudy conditions across Ghana on June 22, with rough seas on the coast and safety warnings for residents and motorists. 2 sources. https://clstr.news/cluster/ghana-faces-rain-and-thunderstorms-as-gmet-issues-forecast ### 2026-06-12: West African Nations Brace for June Rainstorms and Flood Risks Senegal expects June thunderstorms across multiple regions, while Mali forecasts a generally average rainy season with possible irregularities and flood risks, prompting agricultural cautions. 4 sources. https://clstr.news/cluster/west-african-nations-brace-for-june-rainstorms-and-flood-risks --- Cite as: West African rainy season: floods, storms, and mitigation. CLSTR, https://clstr.news/situations/west-african-rainfall-outlook-and-drought-risk