Fernando said a bag of cement will also cost 70 rupees more from midnight Friday.
Cooking gas is revised on a cost formula but the state sometimes refuses to permit monthly fuel revisions to buy votes. Sri Lanka's rupee fell from 110 to 130 levels partly due to bank credit taken to manipulate diesel, kerosene and power prices.
In another bizarre move Fernando also revised prices of milk powder, on which the state has imposed price controls to score points and buy votes after the finance ministry slapped a 15 percent import tax on a kilogram.
Fernando said a 400 gramme pack of milk powder goes up by 61 rupees, while a one-kilo pack costs another 163 rupees more.
A 400 gramme pack of milk powder, widely used by the poor and marginalised, is retailed between 260 rupees to 265 rupees.
Just weeks earlier Fernando refused to allow importers to raise prices after the rupee fell.
Fresh milk remains an expensive option for many Sri Lankans, as the government keeps raising the mandated purchase price of milk.
Frequent price hikes for fresh milk, makes in unaffordable for people who do not own refrigerators.
Sri Lanka’s LP Gas market is split between state run Litro Gas Lanka (market leader) and privately-held Laugfs Gas PLC.
Though LP Gas penetration remains low, cooking gas is popular among urban towns.