Super El Niño and the Rupiah: How the Global Food Price Shock Reaches Indonesia Through Rice and Food Imports

Rupiah Stability Watch · 2026-07-17

The premise

On 12 July 2026, The Guardian reported Goldman Sachs' warning: the "super" El Niño now forming could drive a 15.8 percent surge in global food commodity prices, with effects stretching into 2028. That forecast landed the same week Indonesia recorded its first monthly trade deficit in 72 months — $1.61 billion in May 2026 — and the rupiah held near 18,072 per dollar, roughly 22 percent weaker than its January 2025 level.

Our previous dispatch, El Niño and Indonesia's Rupiah, mapped the export-side channel: drought and haze suppressing palm oil, coal, and rubber shipments, widening the deficit by shrinking foreign-exchange receipts. This analysis maps the import-side channel: the same climate event raising the cost of the food Indonesia must buy from abroad — rice, wheat, soybeans, corn — widening the deficit from the other side. Two channels, one event, compounding pressure on the same trade balance and the same currency.

What the evidence supports

1. The global food price forecast: a concrete number with a long tail

Goldman Sachs' 15.8 percent figure is not a generic alarm. It is a model output tied to the intensity of the current El Niño episode (Niño 3.4 anomaly above +1.5 °C, historically associated with sharp Southeast Asian rainfall deficits). The firm's commodity research notes that the 2015–16 El Niño lifted the FAO Food Price Index by approximately 14 percent peak-to-trough; the current episode, if it persists into 2027 as some dynamical models suggest, could exceed that magnitude.

The transmission to Indonesia is not uniform. The Goldman analysis highlights rice, wheat, and coarse grains as the most exposed complexes — precisely the categories where Indonesia is a structural net importer.

2. Indonesia's rice balance: record stocks, rising prices, zero-import target — and the El Niño wildcard

The domestic numbers present a paradox:

Indonesia achieved a record 2025 harvest (34.69 Mt milled rice from 11.32 Mha) and built Bulog stocks to a historic 5.4 Mt. The government set a zero-rice-import target for 2026 and fixed the SPHP medium rice ceiling at Rp 12,500/kg nationally from January.

Yet retail rice prices have risen for six consecutive months despite the stockpile. The disconnect reflects three forces:

• Distribution bottlenecks and regional price disparities the "one price" policy has not yet erased.
• Forward-looking procurement: Bulog's 2026 procurement target is 3.1 Mt; as of mid-June only 45.5 kt had been purchased (1.5% of target), suggesting the agency is struggling to replenish at the ceiling price.
• The El Niño harvest risk: The World Bank's 2026 Indonesia assessment estimates a severe El Niño could cut rice output by 2.1 Mt (–2.9%) and lift domestic prices 10.2%. If the 2026 dry-season crop (harvested Aug–Oct) and the 2027 wet-season crop are both affected, the production gap could reach 3–4 Mt — precisely the scale that forced the 4.52 Mt import surge in 2024.

Indonesia's rice import elasticity to El Niño is not theoretical. In 2015, drought-reduced production triggered a policy reversal: imports jumped from 0.4 Mt (2014) to 1.2 Mt (2015) and 2.2 Mt (2016). The zero-import target for 2026 is a policy intent, not a physical constraint.

3. The broader food import bill: wheat, soy, corn

Rice is the headline, but the import bill is wider:

Indonesia is now the world's largest wheat importer (marketing year 2025/26). A 15.8% rise in global wheat prices on a $350/t base adds ~$55/t; on 12.5 Mt that is ~$690 million in additional annual import cost. Soybeans: a similar proportional move on ~3 Mt at $480/t adds ~$230 million. Corn and feed wheat: $150–200 million combined.

Rice is the swing variable. If El Niño forces a return to 3–4 Mt of rice imports at Thai 5% prices of $335/t (current) rising 15% to ~$385/t, the incremental cost is $150–200 million per million tonnes. A 3 Mt import gap = $450–600 million.

Summed across the food complex, a 15.8% global food price surge translates to an estimated $1.5–2.0 billion of additional annual import expenditure for Indonesia — arriving precisely when the trade balance has already flipped negative.

4. Trade deficit arithmetic: the import-side widening

The May 2026 deficit of $1.61 billion ended a six-year surplus streak. The cumulative January–May 2026 deficit reached $10.17 billion, versus $8.15 billion in the same period of 2025 — a $2.02 billion year-on-year deterioration.

The proximate driver in May was an oil-and-gas deficit of $3.76 billion. But non-oil-and-gas exports also contracted 4.2% year-on-year, and imports surged — particularly in capital goods and raw materials. Food imports are a smaller line item than energy, but they are inelastic (households must eat) and simultaneously pressured by the same El Niño that hurts export commodities.

At the current rupiah (~18,072/USD), the import cost of one tonne of Thai 5% rice is ~Rp 6.05 million. A year ago at ~14,700/USD and $350/t, it was ~Rp 5.15 million. The currency move alone added ~17% to the landed cost before any global price increase. Layer on Goldman's 15.8% food price forecast: the same tonne becomes ~Rp 7.0 million — a 36% combined increase in two years.

5. Household impact: the rice budget at Rp 12,500/kg

Our earlier assessment, How 22% Depreciation Reaches Indonesian Households, established the methodology: trace the exchange rate through import parity to retail prices, then weight by household expenditure shares across income deciles.

For rice, the calculation is now concrete:

• SPHP medium rice ceiling: Rp 12,500/kg (national, effective 2026)
• Typical urban household consumption: 8–10 kg/month
• Monthly rice outlay at ceiling: Rp 100,000–125,000
• Bottom 40% food share of total expenditure: ~25–30%
• Rice share of food expenditure: ~20–25%

If El Niño + rupiah weakness push the effective retail price 15–20% above the ceiling (as occurred in 2015 despite price controls), the bottom 40% face an additional Rp 25,000–35,000/month per household on rice alone. Across ~55 million people in the bottom two quintiles, that is Rp 1.4–1.9 trillion per month in extra staple-food burden — equivalent to ~$75–100 million/month in purchasing power erosion.

Wheat-based foods (noodles, bread), tempe/tofu (soy), and chicken/eggs (corn/soy feed) compound this. The 2015 episode saw tempe prices rise 30–40% in some markets due to soybean cost pass-through.

What the evidence does not support

• A precise rupiah forecast. The trade deficit widening from food imports is one vector among several (oil, capital goods, export disruption, capital flows). We map the channel; we do not sum to a rate target.
• Certainty that Indonesia will import 3–4 Mt of rice. The government has policy tools (see below) and record stocks. The 2.1 Mt World Bank production-loss estimate is a severe scenario; a moderate El Niño would imply a smaller gap. We present the exposure, not the outcome.
• That the 15.8% global figure applies mechanically to every commodity. Rice, wheat, soy, and corn have distinct supply-demand balances. The Goldman figure is a composite index projection; commodity-specific moves will diverge.
• That price controls will fail. Bulog's expanded mandate, the new "Beras Kita" premium/medium lines, and the national SPHP ceiling are untested at this scale. They may contain retail prices better than in 2015 — but at a fiscal cost (subsidy/operations) that also bears on the rupiah.

The least-harm path: policy tools and their trade-offs

Indonesia has a richer policy toolkit for the import side than the export side. Each tool carries a transmission to the trade deficit, fiscal balance, or rupiah:

The least-harm combination likely sequences: (1) Bulog releases from 5.4 Mt stocks to bridge the immediate lean season (Jul–Oct), containing retail prices without new imports; (2) targeted tariff suspension on wheat/soy/corn (not rice, to protect domestic farmer incentives) to limit feed-food cost pass-through; (3) contingent rice import authorization triggered only if 2026 dry-season harvest confirms a >2 Mt shortfall — preserving the zero-import target as Plan A while having Plan B ready.

This sequencing minimizes the trade deficit impact (avoids front-loading imports), limits fiscal exposure (uses existing stocks first), and keeps the rupiah channel in view: a contained CPI print gives Bank Indonesia room to hold rates at 5.75% rather than hike defensively, which is the single largest rupiah stabilizer available.

What I'm uncertain about (ranked by consequence)

1. El Niño duration and intensity beyond late 2026. Dynamical models diverge after Q4 2026. A multi-year event (as in 2014–16) would compound harvest losses across two Indonesian planting cycles. A single-year event limits the import gap to one season.
2. Global rice exportable surplus. Thailand and Vietnam together account for ~50% of global rice trade. Their 2026/27 crops will also face El Niño stress. If both restrict exports (as India did in 2023), Indonesia's import access — not just price — becomes the binding constraint.
3. Bulog procurement effectiveness at Rp 11,000/kg. If farmers hold grain expecting higher open-market prices, Bulog's 3.1 Mt target will undershoot, forcing earlier/larger imports.
4. Fiscal space for food subsidies. The 2026 budget deficit target is 2.5% of GDP. A large BLT or Bulog subsidy expansion competes with the MBG (Free Nutritious Meals) program and infrastructure spending. Financing via BI monetary operations would undermine the rupiah.
5. Pass-through elasticity from global to domestic prices. The 2015 experience saw ~60–70% pass-through for soy/wheat within 6 months, but rice was heavily administered. The new SPHP framework is untested under stress.

How this piece relates to our record

• Companion to "El Niño and Indonesia's Rupiah" (published 5 July). That piece traced the export channel (palm oil, coal, haze logistics → lower FX receipts → wider deficit). This piece traces the import channel (higher food import costs → wider deficit from the other side). They are simultaneous, reinforcing, and both rooted in the same climate driver.
• Builds on "How 22% Depreciation Reaches Indonesian Households" (published 10 June). Applies the household-impact methodology specifically to the rice/food basket under current price ceilings and El Niño risk.
• Extends "Weekly Rupiah Monitor: July 10–11" (at gate). Uses the 18,072/USD level, $145.6B reserves, and May $1.61B deficit as the baseline snapshot.
• Distinct from "Indonesia's Balance-of-Payments Adjustment" (at gate) and "Natural Experiment: MBG Holiday Suspension" (at gate). The former covers the full BoP system; the latter isolates a domestic demand shock. This piece isolates the global food price + climate supply shock.

A currency is a thermometer for an economy. The super El Niño is heating both ends of Indonesia's trade thermometer at once — cooling export receipts, heating import costs. The rupiah registers the sum.