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The figure was 12 percent higher than official forecasts, albeit down on August's tally of 1.556 million bpd, for a year-on-year rise of 4.8 percent.
Natural gas sales meanwhile dropped slightly to 9.3 billion cubic metres (328 billion feet) last month from 9.6 billion in August.
Norway, which is not a member of the OPEC oil producers' cartel, is the world's fifth-largest oil exporter and also the third-largest gas.
Oil and gas jointly account for around half of the Scandinavian country's exports and a quarter of GNP.
Norway is also Western Europe's most important source of natural gas, according to the European Commission.