Another active April contract closed at 10.50 baht per kg on Monday, up from 10.48 baht last on Friday with the number of contracts traded falling to 11 from 33.
"Most millers and farmers have kept rice in their stock, waiting to sell later at higher prices as they expect the price to rise further after the government has extended the intervention scheme," said one broker.
The government said last week it had extended the scheme for one month to March 31 to boost domestic prices. It said it had already bought 2.8 million tonnes of paddy rice since the scheme started last November and aimed to buy up to nine million tonnes.
On the physical market, Thai 5 percent white rice was between 10.50-10.55 baht per kg on Monday, slightly up from last on Friday's 10.50 baht. Thailand, the world's largest rice exporter, started rice futures trading on August 26.