Arabica coffee futures tumbled raw sugar futures hovered above 2010 lows

New YORK / London (Reuters)-Arabica coffee futures tumbled 4 percent to a 13-month low on Monday as the Brazilian real continued to weaken and the market renewed a wave of massive speculative selling.

Raw sugar futures also fell, nearing their lowest level since 2010. Cocoa futures continued to decline in quiet trading.

Data released on Friday showed that the recent decline in Arabica coffee futures was due to speculative selling, as non-commercial investors turned into net short positions as of March 3 for the first time in 13 months.

ICE- may Arabica coffee futures closed down 2.90 cents, or 2.1%, at $1.37 a pound and tumbled 4.1% to $1.3415, above a 13-month low of $1.2880 hit last week.

The weakness of the Brazilian real attracts speculators to sell while the technical side is still weak, and rain in growing areas has also increased market pressure, traders said.

ICE- may Robusta coffee futures closed down $10, or 0.5%, at $1871 a tonne.

Raw sugar futures also fell, with the May contract closing down 0.17 cents, or 1.3%, at 13.27 cents at the pound, slightly higher than the lowest 13.18 cents hit last week since May 2010.

May sugar futures fell $3.40, or 0.9%, to close at $370.80 a ton.

In may, new York cocoa futures closed down $11, or 0.4%, at $2934 a tonne, the fourth day in a row.

London cocoa futures fell 11 pounds, or 0.5%, to close at 2018 pounds a tonne in May.