2021 JPY to IDR Historical Review
A comprehensive breakdown of exchange rate performance throughout the year 2021.
2021 JPY to IDR Performance & Market Timing Review
Analysis of key historical highlights and timing insights for 2021
During 2021, the JPY to IDR exchange rate experienced significant fluctuation. The market reached its absolute peak on January 1, valuing the pair at 137.6762. Conversely, the yearly low was recorded on October 16, dropping to 122.9620.
This high-to-low spread represents a total annual volatility of 14.7143 IDR. From a start-to-finish perspective, comparing the January average rate of 135.4722 to the December average rate of 125.8361, the exchange rate registered a net change of -7.11% (reflecting a weakening trend).
Looking at year-over-year peak valuations, the 2021 high of 137.6762 was down 10.31% compared to the 2020 peak of 153.5041, indicating shifts in long-term support levels.
Comparing the value generated converting 500,000 JPY based on timing:
Trend Visualization
Monthly average fluctuations over the course of 2021.
JPY to IDR Seasonal Trends & Volatility Analysis
A structured review of seasonal halves, trading extremes, consecutive streaks, and historical baselines.
Seasonal Halves (H1 vs H2)
SeasonalThe average exchange rate in the first half of the year (H1: Jan–Jun) was 132.6372, compared to 128.0942 in the second half (H2: Jul–Dec). This shows that the rate was stronger in the first half (Jan–Jun) by a margin of 4.5431 points.
Volatility Range Comparison
VolatilityThe most volatile month in 2021 was October, with a trading range of 5.9939 IDR (High: 128.9559 / Low: 122.9620). On the other end, March was the most stable month, with a tight range of 2.2227 IDR (High: 133.5446 / Low: 131.3219).
Growth Streaks & Declines
TrendsNo sustained consecutive month-over-month growth streak of 2+ months occurred in 2021. Conversely, the sharpest month-over-month decline occurred between September and October, when the average rate fell by 4.0156 points.
Same-Month Historical Baseline
YoY BaselineComparing the current year's strongest month average (January 2021: 135.4722) against the same month in 2020 (average: 125.6092), the exchange rate shifted by +9.8629 (+7.85%).
Monthly Breakdown
Statistical summary for each calendar month.
| Month | High | Low | Average |
|---|---|---|---|
| January | 137.6762 | 133.9494 | 135.4722 |
| February | 134.4875 | 131.9255 | 133.3018 |
| March | 133.5446 | 131.3219 | 132.2756 |
| April | 134.7736 | 131.1649 | 133.2984 |
| May | 132.4874 | 129.7546 | 131.1044 |
| June | 131.8035 | 129.3232 | 130.3711 |
| July | 133.2053 | 130.2017 | 131.5401 |
| August | 132.0604 | 129.4936 | 130.9564 |
| September | 130.4778 | 128.0976 | 129.4542 |
| October | 128.9559 | 122.9620 | 125.4386 |
| November | 127.1979 | 123.9041 | 125.3397 |
| December | 128.7709 | 123.7023 | 125.8361 |