Indonesia Harvest Update 2026 

This article at a glance 

• This year’s production is expected to decline due to excessive rainfall across key regions. This has affected both Arabica and Robusta volumes.  
• Despite challenges, quality remains strong thanks to our team’s close attention to harvest and post-harvest processing, while drier conditions later in the year signal quality improvements.  
• Sucafina in Indonesia has expanded direct sourcing in Aceh, northwest Sumatra. This expansion enables a broader range of traceable lots.  

Arabica Update 

Due to excessive rainfall, this year’s harvest is expected to see a decline in yield, the second consecutive year of significant production drops in Indonesia. Despite these challenges, quality remains strong as our team continues to prioritize careful processing to deliver lots with the best cup profiles. 

“Quality has been very good so far. With less production, processing capacity is less strained and each batch can receive full attention,” said Shewmaker. “We are expecting drier conditions later in this year, which will help to improve quality as well.”  

In Sumatra, the first half of the Arabica harvest (October–December 2025) was significantly smaller than the second half (March–May 2026), an unusual pattern given that production is typically lower later in the cycle. Floods and landslides in late November and December further disrupted access to Aceh, compounding the overall decline in volume. 

Across other islands such as Java, Bali, Sulawesi and Flores, the Arabica harvest schedule remains broadly in line with previous years, with smaller harvests occurring from April through August. 

Looking ahead, early indicators offer some optimism. Strong flowering observed in Sumatra during February and March points to a more robust main harvest expected to begin in October 2026. 
“We saw good flowering and are optimistic for a better main harvest,” Shewmaker noted. 

Robusta Update 

Robusta harvesting at lower to mid altitudes in Sumatra is underway, with higher-elevation areas expected from May through June. Java will follow a similar timeline, with Flores shortly after. As with Arabica, volumes are projected to be significantly lower than last year due to excessive rainfall, alongside an unusually large fly crop and an earlier-than-usual start to the season. 

Frequent and heavy rains persist across key growing regions.  

“[This] presents challenges in drying the coffee,” commented Shewmaker, “as the rains are so frequent and often excessive as well.”  

Looking ahead, input costs are expected to come under pressure. Fertilizer prices are expected to become a significant concern later this year due to current geopolitical tensions, including conflicts involving Iran, driving volatility in both fuel and fertilizer markets.  

Nonetheless, our team in Indonesia continues to build upon the strong foundation of our sourcing network. For this year, we have expanded our network of direct sourcing in Aceh. This growth has allowed us to produce a wider range of traceable lots, giving more options to clients.  

Sustainability Efforts in Focus 

Our team in Indonesia kicked off a donor-funded project last year, supported by the Dutch government, alongside our NGO partner and EU buyer in Java. The focus is on improving incomes, supporting youth and women, and strengthening workers’ rights and wellbeing across the supply chain.  

“As part of the work, we’ve set up three Village Savings and Loan Association (VSLA) groups to support small business opportunities, while also partnering with local authorities to establish a ground-level grievance committee,” Valumany shares.  

Alongside this, our team works closely with clients to supply agro-inputs to farmers, including distributing high-quality seedlings through eight nurseries across Indonesia. The team also runs two community-based compost yards in Java, turning cherry pulp waste into compost for farmers in the value chain. More recently, we have concluded another donor project with partner roasters, helping provide clean drinking water to 38 households in a remote village in West Java. 

We continue to offer responsibly sourced coffees through IMPACT verification, Sucafina’s responsible sourcing program. Verified lots from West Java and Aceh are now available on our offer list and our network in Indonesia now includes 1,449 IMPACT Verified farmers.  

The harvest is already in swing in some areas in Indonesia and the remaining areas are to follow in the next few months. It’s the best time to get in touch with your trader about sampling and booking fresh-harvested lots from Indonesia. Don’t miss out!