Fuel prices across Tonga will increase from Thursday, 1 October 2026, reversing the downward trend since July, while extending the mixed price movements seen in September.
The Tonga Competent Authority (TCA) has approved new retail prices, with petrol, kerosene and diesel all increasing on Tongatapu. Petrol will cost $3.90 per litre, up 10 seniti from September’s $3.80. Kerosene will rise 10 seniti to $3.55, while diesel will increase 25 seniti to $4.55 per litre.
September’s rates reported petrol falling by five seniti, while kerosene and diesel increased by 20 and 30 seniti respectively.
The October increases follow reductions in July and August. In August, Tongatapu petrol fell to $3.85 per litre, kerosene to $3.25 and diesel to $4.00, according to the Ministry’s published notice.
Earlier reports also covered falling prices in July and August, including an August reduction attributed in its headline to easing global oil costs.
From October 1, prices will vary across the islands. In ‘Eua, petrol will cost $4.10 per litre, kerosene $3.85 and diesel $4.75. Vava’u rates will be $3.95, $3.65 and $4.60 respectively.
In Ha’apai, petrol will range from $4.15 in Nomuka to $4.30 in Kotu and ‘O’ua/‘Uiha. Kerosene will range from $3.85 to $4.00, while diesel will cost between $4.75 and $4.90.
Niuatoputapu will have prices of $4.65 for petrol, $4.35 for kerosene and $5.30 for diesel. Niuafo’ou will have the highest listed rates, at $4.75, $4.45 and $5.40 respectively.
The latest increase will continue to add pressure to the already high transport and operating costs for households, businesses and public transport operators.
