The sun is expected to break through the clouds in frequently overcast Germany this weekend, prompting the country’s Federal Office for Radiation Protection (BfS) to warn of an increased risk of sunburn. The agency urged Germans to protect themselves from the sun and wear sunscreen, skin-covering clothing, hats and spending as much time in the shade as possible, especially at midday. An ultraviolet (UV) radiation index value of up to 6 is expected on Saturday – unusually high for April in Germany – with even higher values possible in the mountains, the agency said. The UV index indicates the m…