As ever make what you will of the data:
www.destatis.de/EN/Themes/Cross-Section/...opulation_death.html
At the start of 2020 excess deaths were much lower than average and at the lowest end of the 2016-2019 range until a peak at week 15 (during April) which is anyway lower than the usual spring peak.
They say "In April, mortality figures were markedly higher than the average across previous years" while ignoring the plain fact that mortality was much lower January to March
Then a non-Covid-attributed summer peak, a bit later than usual in the year, due to a heatwave (we should really start having "lockdowns"/curfews when it's too sunny, shouldn't we?!)
Excess deaths are now above average but, quite possibly as JK says making up for the relatively lower than usual number of elderly deaths last winter (2019-20) and the mild flu season 2018-19.
2018-19 flu season:
www.rki.de/EN/Content/infections/epidemi...summary_2018-19.html
"Compared with previous seasons, the estimate for iMAARI is therefore significantly lower than in the extraordinarily severe flu epidemic in the 2017/18 season and the severe seasons 2012/13 and 2014/15. The estimate for influenza-attributable hospital admissions is also lower than the estimates for 2016/17 and 2017/18, roughly comparable to the values for the 2015/16 season."
When 2020 is finished I don't expect the German excess mortality to be significantly higher than previous years.