As a buyer of Vietnamese coffee, China is suddenly increasing its volume. According to an analysis of agricultural products to China compiled by VietnamPlus in August 2026, Vietnamese coffee imported by China in January–May 2026 was US$99.6 million (about 14.7 billion yen, roughly estimated at 148 yen per dollar), up 87.1% year on year. Vietnam's share of China's coffee imports rose from 8.8% to 15.3%, nearly doubling. For Japanese roasters and trading companies that have used Vietnamese Robusta as the base for blends and instant coffee, this is a precursor to concrete movement in the volume and unit price of purchasing.
China's Vietnamese coffee imports were US$99.6 million in January–May, with its share rising from 8.8% to 15.3%
The growth stands out. Up 87.1% in value, with the share nearly doubling. China's coffee market had been dominated by Brazilian Arabica and roasted beans via Europe, and Vietnamese Robusta has forced its way in there at a stroke. Uses with Robusta as the main raw material—instant coffee, canned and PET-bottle adjusted coffee, and chains aimed at young people—spreading within China reads as driving the growth. There is meaning in the share exceeding 10% and entering the 15% range. While in the single digits it is merely one of the supply sources, but once it reaches 15%, China becomes a major customer that can influence Vietnam's Robusta export volume itself, and a motive begins to work for production areas and exporters to prioritize China's demand when deciding volume allocation. China's buying is strong not only in coffee: in January–July 2026, China accounted for 21.9% of Vietnam's agricultural export value, with fresh produce at US$2.22 billion and seafood reaching about US$1.74 billion over the seven-month cumulative. The same flow is seen in durian, where China's buying spree of Vietnamese durian pushed Vietnam up to the second supplier. But since what directly affects Japan's coffee sourcing is the coffee figures, this piece focuses here.
The true nature of the 87.1% increase is a scramble over the same limited-harvest Robusta green beans
What matters here is that coffee is a primary commodity with limited inventory. Vietnam is the world's largest Robusta producer, and the volume of green beans that can be harvested in a single season is fixed. That China's share moved from 8.8% to 15.3% means Chinese buyers secured a larger slice than before of green beans from the same production areas and the same harvest year. Because total production does not suddenly increase, the allotment for those buying the same beans later narrows by that much. The phase in which China overtook the US to become the largest market for Vietnamese seafood, with Japan dropping to third and what is happening with coffee share the same structure. The more buyers concentrate in one country, the more the power to scramble over limited supply rides onto the price.
Timing also matters. Vietnam's Robusta harvest is concentrated from autumn into winter, and volume negotiations for export move around that time. If Chinese buyers secure a large allotment on an annual basis early, buyers who later try to add volume from the same harvest year tend to end up picking up the thin remainder at high prices. This January–May period falls in the early part of this harvest year. The fact that the share jumped from 8.8% to 15.3% here shows that China moved to lock in volume at an early stage, and if the same move continues in subsequent seasons, the impact will not end as a one-off.
Upward pressure on unit price and volume for the Robusta that underpins Japan's canned and instant coffee
Japan's coffee imports source mainly from Vietnam alongside Brazil. Vietnamese Robusta forms the base in canned coffee, PET-bottle drinks, instant coffee and low-price-band blends for commercial use. If a state in which China's imports rose 87.1% and nearly doubled its share continues, the impact on Japanese roasters can be organized into two points. One is upward pressure on the green-bean purchase price. The other is that it becomes harder to lock in the desired volume in full. Because Robusta is often used in applications that cannot be easily replaced by Arabica in product design, situations in which one must go secure volume even as the unit price rises will increase. The more Chinese demand turns to Central Highlands Robusta, the more Japanese buyers shift to a position of first asking "can we get the required volume?" rather than "buy because it's cheap."
The way the pain appears differs by use. Products whose taste design has been built around Robusta, such as canned and instant coffee, cannot easily change their blend even if green beans rise, so they end up absorbing the cost increase as-is. Specialty-leaning roasters centered on Arabica are less affected, but what supports Japan's consumption volume is the Robusta blends for commercial and mass-retail use. Where China's rising share directly hits is this base of mass consumption.
The more spot-centered a small or mid-size roaster is, the more it gets pushed back behind large-lot Chinese demand
The way the impact appears also splits by buying method. Major players that fix volume in advance with annual contracts can predict their required volume even if the unit price moves. On the other hand, small and mid-size roasters that have adjusted volume case by case on the spot tend to be pushed back in a supply-tight phase when they collide with large-lot Chinese demand that comes to secure its allotment first with annual contracts. Within Vietnam, Arabica production areas in the northwest, such as Dien Bien, Arabica production areas in the northwest such as Dien Bien are also growing beyond the Central Highlands' Robusta-only base, but this is mainly an Arabica story and is no substitute for the Robusta uses that canned and instant coffee require. The more a maker uses Robusta as its main raw material, the harder it is to escape the structure of colliding head-on with Chinese demand. That is precisely why, ahead of unit-price negotiations, the judgment of "how far to lock in next season's required volume in advance" grows heavier.
The indicators to watch are also clear. Because this 8.8%-to-15.3% share is a January–May figure, first track whether China's share grows further or plateaus in the second-half data. If the growth continues, moving up the next harvest year's negotiations—that is, before Chinese players move to secure their allotment, meaning before the harvest goes into full swing in autumn—takes on realism. Makers buying via trading companies will want to confirm, before contract renewal, what share of the volume their supplier has secured will come back to them, and how priorities shift when inquiries for China strengthen.
Vietnamese Robusta is changing from "a raw material that can be bought cheaply" to "a raw material fought over with China"
The figures of an 87.1% increase and a rise in share from 8.8% to 15.3% in January–May 2026 show that Vietnamese Robusta is becoming, for Japan, a raw material fought over. First, you want to take inventory of your company's annual volume of Vietnamese Robusta and whether it is spot buying or annual contracts. On that basis, decide how much of next season's required volume to lock in early, on the premise that large-lot Chinese demand will come to secure its allotment. Now that China's share has reached the 15% range, the more this judgment is put off, the easier it is to end up on the disadvantaged side in both unit price and volume. Whether the share moves further in the second-half import data from China will serve as a guide for when to firm up next season's purchasing plan.
