Dubai – Qahwa World

Indonesia’s coffee production is set to decline for a second consecutive year in 2025–26 as excessive rainfall disrupts key growing regions, although industry participants say cup quality has remained stable due to reduced pressure on processing. Experts are closely watching the Indonesia coffee harvest 2026 to assess its impact on supply and quality.

Arabica and Robusta volumes are both expected to fall from last year’s levels, with Sumatra among the most affected origins after flooding and landslides restricted access to producing areas and disrupted harvest flows, according to Sucafina Indonesia. In addition, stakeholders are keenly monitoring how the Indonesia coffee harvest 2026 may influence these changes.

In Sumatra, the Arabica harvest has shown an unusual seasonal pattern, with the first phase producing less than the later months, reversing typical output trends. Other origins, including Java, Sulawesi, Bali and Flores, are expected to follow normal harvesting schedules but continue to face weather-related disruptions. Furthermore, the Indonesia coffee harvest 2026 is expected to show diverse patterns across these regions.

Despite lower production, quality has been supported by improved post-harvest attention. For coffee traders, the Indonesia coffee harvest 2026 outcomes will be essential to forecast quality and supply for the next cycle.

“Quality has been very good so far. With less production, processing capacity is less strained and each batch can receive full attention,” said Daniel Shewmaker, Managing Director at Sucafina Indonesia. On another note, coffee experts continue to anticipate fresh details about the harvest for Indonesia in 2026.

Robusta harvesting is underway in Sumatra at lower and mid elevations, with other regions to follow in the coming months. Output is also expected to decline due to persistent rainfall, an unusually large fly crop and an earlier-than-usual start to the season. Heavy rains are also complicating drying conditions across key areas, which could affect the Indonesia harvest for coffee in 2026.

Shewmaker said frequent rainfall was creating challenges for post-harvest processing. Indonesian coffee harvest 2026 analysis will be vital for understanding these processing difficulties.

At the same time, input costs are expected to rise later in the year, particularly fertiliser prices, which are being affected by volatility in global energy markets and geopolitical tensions. Notably, these factors may converge during the Indonesia 2026 coffee harvest season.

Sucafina Indonesia said it has expanded direct sourcing in Aceh, northwest Sumatra, increasing access to traceable coffee lots as part of efforts to strengthen supply chain coverage. This expansion is linked to the company’s response to the anticipated Indonesia coffee harvest trends in 2026.

The company also highlighted ongoing sustainability initiatives in Java and other producing regions, including farmer income programmes, savings groups, composting projects and access to agricultural inputs. Indonesia’s coffee harvest for 2026 will serve as a benchmark for these initiatives.

Early indicators from Sumatra suggest improved flowering conditions earlier this year, which could support a stronger main Arabica harvest beginning in October 2026, the company said. Overall, the Indonesia coffee harvest 2026 is likely to be memorable for its challenges and opportunities.