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Yen weakens again to 160 per dollar: effect of US-Japan coordinated intervention fades after one month
N3 economy Original · 1 min read · 32 views · 11 words

円安再進行 1ドル160円台に 日米協調介入から約1カ月

Yen weakens again to 160 per dollar: effect of US-Japan coordinated intervention fades after one month

2026年8月28日のニューヨーク外国為替市場で、円相場は対ドルで下落し、一時1ドル=160円20銭を付けました。日米が協調して為替介入かわせかいにゅうを行った7月末以来、約1カ月ぶりの円安えんやす水準です。

On the New York foreign exchange market on 28 August 2026, the yen fell against the dollar, briefly hitting 160.20 yen per dollar. This is the weakest level in about a month since the end of July, when the US and Japan conducted coordinated forex intervention.

背景には、米国べいこくの早期利上げそうきりあげ観測の高まりがあります。FRBエフアールビーのウォーシュ議長が講演で、インフレインフレの高止まりに懸念を示し、利上げの可能性を残したためです。日米の金利差きんりさが意識され、円を売ってドルを買う動きが強まりました。

The background is growing expectations of early US rate hikes. Fed Chair Walsh expressed concern about persistently high inflation in a speech and left open the possibility of rate increases. The US-Japan interest rate differential was in focus, strengthening the move to sell yen and buy dollars.

財務省が発表した7月30日から8月26日までの円買い介入えんがいかいにゅう額は、月次ベースで過去最大の約15兆4000億円でした。しかし、介入の効果こうかは約4週間で薄れ、円安基調が続いています。市場では追加介入への警戒も残っています。

The Ministry of Finance reported that yen-buying intervention from 30 July to 26 August totaled about 15.4 trillion yen, the largest monthly amount on record. However, the effect of the intervention faded in about four weeks and the yen’s weakening trend continues. The market remains wary of possible further intervention.

円安えんやすは輸出ゆしゅつ企業には有利ですが、輸入ゆにゅうコストの上昇を通じて物価を押し上げる要因にもなります。今後の動きに注目が集まっています。

A weaker yen benefits export companies but also pushes up prices through higher import costs. Attention is focused on future developments.

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Frequently asked questions

What does 円安 mean?

A situation where the Japanese yen weakens compared to other currencies (especially the US dollar). 1 dollar can be exchanged for more yen → weak yen.

Why did the yen weaken back to 160?

Because the market expects the Fed to raise interest rates soon because US inflation is still high. The large US-Japan interest rate difference causes money to flow into dollars and sell yen.

What is 為替介入?

The act of a government/central bank buying or selling foreign currency to influence exchange rates. Japan has intervened to buy yen (sell dollars) to prevent the yen from weakening too strongly.

Source: Reading exercises compiled by JNews

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