September sees the beginning of the rainy-season retreat in many areas, though heavy rains can persist in places. Coastal travel becomes increasingly viable toward month's end as conditions improve.
Average daily low and high (°C) and monthly rainfall, from each country's largest city. The badge shows how it feels, allowing for humidity.
Average temperature across West Africa in September.
Dakar, Saint‑Louis, Casamance & Banjul
By September rains begin to taper in the north but can still be heavy in the far south; Ziguinchor and mangrove areas may have lingering surface‑water problems and muddy roads. Dakar’s humidity drops off slowly and the city becomes more pleasant for evening strolls and markets. This is a transitional month for travelers: if you want quieter cultural experiences, it’s worth accepting some wet‑season inconveniences.
Guinea‑Bissau, Guinea, Sierra Leone & Liberia
September still has significant rain but toward month’s end the intensity begins to lessen in some coastal areas, though Monrovia and Freetown can hold on to wet spells longer. Rivers remain high; expect lingering humidity and patchy road rehabilitation. Travelers interested in birding and river life find late‑season access rewarding as wildlife congregates along receding waters, but carry waterproofs.
Côte d’Ivoire, Ghana, Togo & Benin
September is a transitional month: the intensity of rain often lessens toward the end, though significant showers still occur and the short‑cycle rains in parts of Ghana and Ivory Coast continue. Grain and cocoa processing activity is high in rural areas, and small roads can remain soft for weeks. This is a chance to find quieter beaches and lower rates, but pack for sudden heavy showers.
Coastal south, Lagos, Niger Delta & Jos Plateau
September is often still wet but the rains gradually abate toward the end of the month in many coastal areas, opening windows for clearer days; the Delta remains unpredictable. This is also a period when inland festival and market activity picks up after the heaviest rains. Pack waterproofs and expect to rearrange local travel plans if rivers rise suddenly.
Mauritania, Mali, Burkina Faso, Niger & northern Senegal
September begins the rapid end of the rains across much of the Sahel; rivers recede but muddy tracks can remain a problem, especially after heavy late storms. This month is good for photographers as the landscape stays green and skies clear toward the end. Keep waterproofs for residual downpours and allow extra time for transfers across previously flooded areas.
There are no major festivals or events in West Africa during September to be aware of.
See how September compares with the rest of the year, then read the full guide.