Food and drink prices climbed 8.7 percent year-on-year while clothing and footwear gained 7.7 percent.

Rising inflation may add to pressure on the government of Prime Minister Hamadi Jabali as it struggles to restore stability after this week's assassination of an opposition politician. Poor economic conditions sparked protests that led to the ouster of veteran ruler Zine al-Abidine Ben Ali in 2011.

The central bank is not aiming for a particular inflation rate but the most that should be tolerated is 5 percent, central bank governor Chadli Ayari told Reuters last October.

Inflation rose last year partly because of depreciation of the Tunisian dinar against the dollar between mid-2011 and mid-2012. The currency has now stabilised, but Tunisia is running a trade deficit, which grew to 11.64 billion dinars ($7.48 billion) in 2012 from 8.61 billion dinars in 2011.

To help stabilise its external position, Tunisia said late last month that it was in talks with the International Monetary Fund on a 2.73 billion dinar loan.