Published: October 11, 2026
Key Facts
- Guinea has Africa's weakest currency in 2026. It takes 8,797 Guinean francs to buy one US dollar.
- South Sudan's pound is the second weakest at 5,863 pounds per dollar, followed by Madagascar's ariary at 4,471.
- Nigeria's naira ranks 10th weakest at 1,331 naira per dollar, even though Nigeria is one of Africa's largest economies.
- Five of the ten weakest currencies are in East Africa (South Sudan, Uganda, Burundi, Tanzania and Rwanda).
- The ranking uses nominal exchange rates (currency units per US$1), the same method as our strongest currencies ranking. Rates are a snapshot from October 11, 2026 and move daily.
| Rank | Country | Currency | Units per US$1 | Data vintage |
|---|---|---|---|---|
| 1 | Guinea | Guinean Franc (GNF) | 8,797.18 | October 11, 2026 |
| 2 | South Sudan | South Sudanese Pound (SSP) | 5,863.49 | October 11, 2026 |
| 3 | Madagascar | Malagasy Ariary (MGA) | 4,470.85 | October 11, 2026 |
| 4 | Uganda | Ugandan Shilling (UGX) | 3,994.07 | October 11, 2026 |
| 5 | Burundi | Burundian Franc (BIF) | 3,003.37 | October 11, 2026 |
| 6 | Tanzania | Tanzanian Shilling (TZS) | 2,637.26 | October 11, 2026 |
| 7 | DR Congo | Congolese Franc (CDF) | 2,310.23 | October 11, 2026 |
| 8 | Malawi | Malawian Kwacha (MWK) | 1,746.48 | October 11, 2026 |
| 9 | Rwanda | Rwandan Franc (RWF) | 1,478.47 | October 11, 2026 |
| 10 | Nigeria | Nigerian Naira (NGN) | 1,331.00 | October 11, 2026 |
At 8,797 francs to the dollar, one Guinean franc buys roughly 3,000 times less than one Tunisian dinar, the currency topping our strongest currencies ranking.
Selected Details
1. Guinea: Guinean Franc (GNF), 8,797.18 per US$1
Guinea's franc is Africa's weakest currency by nominal exchange rate. Unlike several peers, Guinea has never redenominated its currency, so decades of gradual weakening show up in full in the headline number. Guinea is rich in bauxite, yet the franc's face value remains the continent's lowest.
2. South Sudan: South Sudanese Pound (SSP), 5,863.49 per US$1
Introduced when South Sudan became independent in 2011, the pound has lost most of its value amid conflict, oil dependence and repeated economic shocks. It is the second weakest currency on the continent.
3. Madagascar: Malagasy Ariary (MGA), 4,470.85 per US$1
The ariary is one of only two non-decimal currencies in the world still in circulation. The island economy's currency sits third weakest in Africa at about 4,471 ariary per dollar.
4. Uganda: Ugandan Shilling (UGX), 3,994.07 per US$1
Uganda's shilling has weakened steadily over the years and now sits just under 4,000 per dollar. Uganda is one of East Africa's larger economies, which shows that a low face value does not equal a small economy.
5. Burundi: Burundian Franc (BIF), 3,003.37 per US$1
Burundi's franc crosses the 3,000-per-dollar mark, making it the fifth weakest currency in Africa. Burundi is one of the continent's smallest economies by GDP.
6. Tanzania: Tanzanian Shilling (TZS), 2,637.26 per US$1
Tanzania's shilling ranks sixth weakest at about 2,637 per dollar. Tanzania's economy has grown steadily for years, another reminder that the nominal rate is about currency history, not economic size.
7. DR Congo: Congolese Franc (CDF), 2,310.23 per US$1
The Congolese franc sits at about 2,310 per dollar. DR Congo holds some of the world's largest mineral reserves, yet its currency remains among Africa's weakest.
8. Malawi: Malawian Kwacha (MWK), 1,746.48 per US$1
Malawi's kwacha trades at about 1,746 per dollar. Malawi also has the continent's highest petrol prices, a sign of the pressure its economy faces.
9. Rwanda: Rwandan Franc (RWF), 1,478.47 per US$1
Rwanda is often praised for strong economic management, yet its franc still ranks ninth weakest at about 1,478 per dollar. A low nominal rate can coexist with solid growth.
10. Nigeria: Nigerian Naira (NGN), 1,331.00 per US$1
The naira rounds out the top ten at 1,331 per dollar. Nigeria floated the naira in 2023, after which it lost a large share of its value. As one of Africa's biggest economies, Nigeria is the clearest proof that a weak nominal rate does not mean a weak economy.
Frequently Asked Questions
What is the weakest currency in Africa in 2026?
The Guinean franc. It takes 8,797 Guinean francs to buy one US dollar, based on exchange rates from October 11, 2026.
Why does this ranking use units per dollar instead of depreciation?
It mirrors our strongest currencies ranking, which orders currencies by nominal rate. It is a simple, transparent snapshot. It does not show which currency fell fastest this year. For that, you would need a depreciation ranking, which is a different list.
Is Nigeria's naira really among Africa's weakest currencies?
By nominal exchange rate, yes: 1,331 naira per dollar puts it tenth. But Nigeria is one of Africa's largest economies. The nominal rate reflects the naira's history, including the 2023 float, not the size of Nigeria's economy.
Does a weak currency mean a weak economy?
No. The nominal rate mostly reflects a currency's history, including whether a country ever redenominated. Nigeria, DR Congo, Tanzania and Uganda all have large economies and weak-looking nominal rates. Tunisia's dinar looks strong at under 3 per dollar, but Tunisia's economy is far smaller than Nigeria's.
Where does this data come from, and how often does it change?
All rates are a single snapshot from October 11, 2026, from one exchange-rate source. Rates move every day, so the exact order can shift. The methodology section below explains the approach and its limits.
Data Sources
- Exchange rates (all currencies, USD base, October 11, 2026 snapshot): open.er-api.com
- Naira cross-check (official and parallel market, October 2026): exchangerates.org.uk and worldforexrates.com
- Sister ranking (methodology mirror): Top 10 African Countries with the Strongest Currency in 2026, African Exponent
Methodology
This ranking orders African currencies by nominal exchange rate against the US dollar: the number of local currency units needed to buy US$1. A higher number ranks as weaker. All rates come from a single source and a single timestamp (October 11, 2026), so every currency is measured the same way. The method mirrors our strongest currencies ranking exactly, only inverted.
Limits: the nominal rate does not measure purchasing power, inflation-adjusted value, convertibility, the size of each economy, or how fast a currency is falling. Countries that redenominated (São Tomé and Príncipe in 2018, Sierra Leone in 2022) look stronger than their history alone would suggest. Rates move daily, so this is a snapshot, not a forecast.
