A weak currency carries serious economic consequences. It raises the cost of imported goods, fuels inflation, erodes household purchasing power and makes foreign debt repayments significantly more expensive. For many African economies heavily reliant on imports and external financing, currency depreciation places immense strain on national budgets.
Governments often face difficult choices, cutting development spending, increasing taxes, or borrowing more — each of which can slow economic growth. A persistently weak currency can also deter foreign and domestic investment, reinforcing economic instability.
Read also: Africa’s return to single-digit inflation gathers pace as currencies stabilise
Sustainable currency strengthening requires disciplined monetary policy, fiscal prudence and deep structural reforms. Without these, depreciation can become self-reinforcing.
According to data from the Forbes currency calculator for February 2026, here are the 10 African countries with the weakest currencies against the US dollar.
1. São Tomé and Príncipe
Currency: São Tomé and Príncipe Dobra
Exchange rate: 22,282 per US$1
The dobra is the weakest currency on the continent in nominal terms. As a small island economy dependent on imports, São Tomé and Príncipe faces high exposure to external shocks and foreign exchange pressures.
2. Sierra Leone
Currency: Sierra Leonean Leone
Exchange rate: 20,970 per $1
Read also: Naira closes 2025 outside Africa’s top 10 worst currencies list
3. Guinea
Currency: Guinean Franc
Exchange rate: 8,765 per $1
Guinea’s franc continues to trade at weak levels, reflecting structural economic challenges despite the country’s vast mineral wealth.
4. Madagascar
Currency: Malagasy Ariary
Exchange rate: 4,270 per $1
5. Uganda
Currency: Ugandan Shilling
Exchange rate: 3,598 per $1
6. Burundi
Currency: Burundian Franc
Exchange rate: 2,964 per $1
Read also: How firmer African currencies are easing business costs in 2025
7. Tanzania
Currency: Tanzanian Shilling
Exchange rate: 2,559 per $1
8. Democratic Republic of the Congo
Currency: Congolese Franc
Exchange rate: 2,311 per $1
9. Malawi
Currency: Malawian Kwacha
Exchange rate: 1,733 per $1
10. Rwanda
Currency: Rwandan Franc
Exchange rate: 1,460 per $1
