SINGAPORE - Petrol prices are creeping back up, after falling in January to rates last seen in 2009.

Both Caltex and Shell revised their prices on Wednesday, with Esso doing likewise on Thursday.

The most popular petrol grade, 95-octane, now costs $1.83 a litre at Caltex and Shell, and $1.80 at Esso.

Prices for the 98-octane grade range from Esso's $1.94 to Shell's V-Power for $2.30 a litre.

The cheapest grade, 92-octane, is now $1.79 a litre at Caltex, and $1.76 at Esso.

Pump prices at the Singapore Petroleum Company (SPC) have remain unchanged since Jan 15. The price for 95-octane at SPC is $1.75 a litre, with 98-octane at $1.88 and 92-octane at $1.71.

Diesel at Caltex and Shell is now $1.32 a litre, $1.30 at Esso, and $1.25 at SPC.

All prices are before discounts. Last month, pump prices fell to levels harking back to 2009, when crude oil fell to below US$50 per barrel.

The benchmark Brent crude, however, surged to US$57.91 on Tuesday.