Coffee futures rose to five-month highs on Thursday, buoyed by crop concerns in top producers Brazil and Vietnam, while white sugar surged to a 9-1/2-month peak.

COFFEE

* Robusta coffee ICEEUR:RC2! gained 2.6% to $3,868 a metric ton by 1015 GMT after climbing to a five-month peak of $3,920.

* Dealers noted there were concerns about the prospects for the 2026/27 crop in top robusta producer Vietnam.

* "This year's irregular rainfall and extreme heat have increased fungal diseases, raising concerns about production," one trader in Vietnam said.

* Vietnam exported 1.1 million metric tons of coffee in the first half of 2026, up 9.7% from the same period a year earlier, the government said in a statement on Thursday.

* Arabica coffee ICEUS:KC1! rose 0.2% to $3.1040 per lb after hitting a five-month high of $3.1680 earlier in the session.

* Dealers said harvest delays in top producer Brazil and tight old crop supplies have combined to boost prices.

SUGAR

* White sugar ICEUS:SF1! gained 0.8% to $486.60 a ton after setting a 9-1/2-month high of $490.

* Dealers said the market was supported by concerns that hot, dry weather could curb production in the European Union.

* A prolonged drought is threatening sugar output in France, the European Union's largest producer, with no rain forecast in key beet regions over the next two weeks, growers said.

* Raw sugar ICEUS:SB1! rose 0.1% to 15 cents per lb.

COCOA

* London cocoa ICEEUR:C2! fell 0.65% to £3,792 a ton.

* Dealers said the recent run-up in prices had at least temporarily stalled, but the market remained underpinned by the prospect of lower production in top grower Ivory Coast in the upcoming 2026/27 season.

* New York cocoa ICEUS:CC1! lost 0.3% to $5,079 a ton.