The dollar dipped versus the yen, although potentially decisive events such as the Federal Reserve meeting midweek limited movements.
The dollar was up around a third of a percent against the yen as markets listened to the Bank of Japan's latest comments on policy on Friday.
The U.K.'s pound has roared higher as Mark Carney, the governor of the Bank of England, surprised markets.
Retail sales missed expectations, and state unemployment benefits claims climbed higher than expected.
Hamish Pepper, Forex Strategist, Asia Pacific at Barclays and Daryl Guppy of Guppytraders.com, debate the direction of the Australian dollar.
The euro neared a four-month low versus the dollar and a 1-1/2 year trough against sterling on Wednesday.
The dollar extended gains against the euro, amid expectations that the Federal Reserve could raise rates sooner than expected.
The euro weakened against the dollar, as yield differentials between Treasuries and Bunds widened to multi-year highs.
The euro rose against the dollar and the yen on Monday, on confidence that the ECB will not be easing policy again soon.
The euro languished near four-month lows after the European Central Bank's loosened monetary policy.
The dollar rose, getting a lift from fatter Treasury yields and investor anxieties about policy shifts from the ECB.
David Forrester, Senior Vice President, G10 FX Strategy at Macquarie, says a stronger domestic economy will support the currency going forward.
Subdued euro zone inflation data kept expectations of aggressive European Central Bank monetary stimulus alive, much of which is priced in.
The euro fell against the dollar on speculation of further monetary stimulus from the European Central Bank.
The yen levelled off on Friday but still looked set to rack up its best gains for months after a jumbled week of currency moves.
The dollar neared a two-month high against major currencies, pausing after rallying due to a hold in sterling and the euro's fall.
The euro fell to a three-month low on Wednesday as expectations solidified for an ECB attack on monetary policy next week.
The British pound sank on Tuesday after weak lending data added to concerns over a European election win for the anti-EU UKIP party.
The euro recovered early losses on Monday after European election results saw gains for Eurosceptics but did not deliver a serious domestic blow to some European governments.
The euro fell to a three-month low against the dollar after a soft German business sentiment survey added pressure on the ECB.