A stronger ringgit usually makes palm oil more expensive for holders of foreign currencies and reduces demand. Palm oil prices were weighed down last week after the central bank raised interest rates, lending support to the ringgit.
The ringgit has appreciated 4 percent since the start of the year, and has gained over a fifth of its value since 2017, in line with improving crude oil prices.
The currency fell 0.1 percent earlier in the day and was last up 0.05 percent against the dollar at 3.8670.
The benchmark palm oil contract for April delivery on the Bursa Malaysia Derivatives Exchange was up 1.3 percent at 2,517 ringgit ($650.89) a tonne at the midday break, its sharpest gain since Jan. 3.
Trading volumes stood at 11,690 lots of 25 tonnes each at noon.
Expectations of stronger exports is supporting the market, said a trader from Kuala Lumpur.
"We're expecting to see smaller negative growth," he said, referring to cargo surveyors' export data scheduled for release on Wednesday.
Palm oil shipments from Malaysia during Jan. 1-25 fell about 7 percent versus the corresponding period last month. The drop is weaker compared with the Jan. 1-20 period, which saw declines of 13-16 percent.
Gains in competing vegetable oils such as soyoil also supported palm, another trader said. Palm oil prices track movements in other related edible oils, as they compete for a share in the global vegetable oils market.
The March soybean oil contract on the Chicago Board of Trade rose 0.4 percent, while the May soybean oil on the Dalian Commodity Exchange was up 0.5 percent.
In other related edible oils, the Dalian May palm oil contract also edged up 0.5 percent.
Palm oil may test a support at 2,462 ringgit, as it has broken a higher support at 2,491 ringgit per tonne, said Wang Tao, a Reuters market analyst for commodities and energy technicals.