Drought in southeastern Brazil and El Nino in Indonesia will damage 2015/16 robusta coffee output and could drive world prices higher if the dry weather persists, although a big Vietnamese crop will cap the upside. Benchmark ICE robusta futures hit a 2-1/2-month high of $1,684 a tonne on Nov. 5 on concerns over depleted supplies due to drought in No. 2 robusta producer Brazil’s Espirito Santo state, and El Nino-related dryness in No. 3 producer Indonesia.