Loading page content
Data from FMP. Forecasts by Sigmanomics Forecast Engine.
South KoreaSouth Korea CPI YoY climbed to 3.1% in August 2026
FMPMonthlyReleased September 2026
South Korea CPI YoY climbed to 3.1% in August 2026, released September 2026, up 0.3% from July's 2.8% reading. The reading matched expectations. The print is running well above the 12-month average of 2.68%.
Latest Release
3.1
Actual
3.2
Consensus
2.8
Previous
Median Absolute Error
±0.2 percentage points
across last 4 releases
Last Call
Sep 2026
Predicted: 3.1
Actual: 3.1
Error: +0
Sigmacast Σ-direction model: consensus + ½ × mean(surprise, trailing 90d).
CORRELATED SYMBOLS— markets that historically move with this indicator
| Symbol | Direction | Correlation | Asset Class | Co-movement | Action |
|---|---|---|---|---|---|
| USD/KRW | ▼ Inverse | −0.50 | FOREX | Moves against | → View |
| KOSPI | ▲ Direct | +0.45 | INDEX | Moves with | → View |
| AUD/USD | ▲ Direct | +0.35 | FOREX | Moves with | → View |
| XAU/USD | ▲ Direct | +0.30 | COMMODITIES | Moves with | → View |
| BTC/USD | ▲ Direct | +0.30 | CRYPTO | Moves with | → View |
Correlation based on 12-month rolling window. Click any symbol to view its Sigmanomics forecast page.
THE RELEASE
CPI YoY (South Korea) was reported at 3.1% in September 2026. This missed the market consensus of 3.2% by 0.1%. The reading rose from the previous value of 2.8%. Trailing 12-month context per ETL data through September 2026.
THE MODEL'S TAKE
Historically, this indicator is negatively correlated with USD/KRW (Bullish KRW). A secondary relationship exists with KOSPI, positively correlated (Bullish KR).
WHAT TO WATCH NEXT
Same-country events in the next 14 days include Consumer Confidence (Sep 22) and Business Confidence (Sep 28).
Auto-generated from current model state · Refreshes on each release · Last update September 2026.
SHARE
CPI YoY - KR
Loading chart data...
About CPI YoY — South Korea
DEFINITION
South Korea's CPI YoY for August rose to 3.100%, missing the 3.200% estimate but up from July's 2.800%. This increase signals accelerating inflation compared to the prior month, reflecting sustained price pressures. Market focus now shifts to upcoming central bank decisions amid persistent inflationary trends. Updated 9/2/26
WHY THIS INDICATOR MATTERS
Inflation prints feed directly into central-bank policy expectations and real-yield calculations, and are among the most rate-sensitive releases on the calendar. The release is more useful as part of a longer-run signal than as a single-print catalyst. Released monthly.
WHAT CHANGED THIS MONTH
Latest reading (Aug 2026): actual 3.1 %, consensus 3.2 %. Prior reading (Jul 2026): 2.8 %. Before that (May 2026): 3.1 %.
WHAT'S NEXT
Sigmacast's 1-month forecast points to a higher reading versus the latest print, with the 3-month outlook reinforcing that direction. Both horizons are aligned bullish for this indicator, suggesting a consistent trend signal. Trend-driven dynamics are the primary tailwind in the current projection. This indicator correlates most strongly with USD/KRW (Bullish KRW, r=-0.50) — a useful reference for forex-focused traders.
Σ
EXPECTED ZONE
SIGMANOMICS MARKET FORECAST ENGINE
Multi-horizon symbol forecasts, Rolling-Surprise economic predictions, and programmatic API access.
Expected Zones · Trade Bias · Confidence Intervals · API Access · 1,456+ instruments
FOREXCRYPTOSTOCKSCOMMODITIESINDICESAPI
BLSBEAFMPWORLD BANKFRED
1,456+ instruments247 indicators530+ correlationsREST + GQL API
4,151 economic indicators127 countries covered6 data sources
FREDBLSEIAECBBOJFMP
Economic Calendar - KR Events
| Monday, September 14, 2026 | Actual | Previous | Consensus | Sigmanomics Rolling-Surprise Forecast | Impact | ||
|---|---|---|---|---|---|---|---|
| 21:00 | KR | Import Prices YoY | 15.6 | 18.8 | 23 | 19.30 | Low |
| 21:00 | KR | Export Prices YoY | 42.4 | 48.9 | 52 | 47.20 | Low |