SEOUL, Jan 22 (Reuters) - South Korea's exports for the first 20 days of January fell 1.0% from the same period the year before, customs agency data showed on Monday.

By destination, shipments to the United States rose 3.6%, but exports to the European Union fell 9.4%. Those to China rose 0.1%, set to snap a 19-month streak of decline.

On average per working day, exports were up 2.2%.

(Reporting by Jihoon Lee; Editing by Tom Hogue)