German economy to slow this summer, warns Bundesbank "After a weak start to the year, real gross domestic product is expected to grow strongly in the second quarter of 2013," said the Bundesbank, pointing to economic indicators for April. The bank also pointed out that, after an especially harsh winter, in the second quarter "the construction sector is quickly making up for the weather-related losses." However, the report said on the July-September period that "for the summer, there are indications for a slowdown in the growth rate." For 2013 as a whole, the bank has predicted 0.3pc economic growth, which is expected to pick up to 1.5pc next year.