It is uncommon for the kidneys to cause dull, aching pain. People sometimes equate back pain with kidney pain, but aching pain in the back -- especially the lower back or the middle of the back -- is usually due to muscles, ligaments, or even vertebrae and disks in the spinal column.
Average monthly temperatures in Passau (degrees centigrade and fahrenheit) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Â°C-1.7: 0.1: 3.8: 8.2: 12.9: 16.3: 18: 17.4: 14: 8.9: 3.6-0.3 Â°F: 28.9: 32.2: 38.8: 46.8: 55.2: 61.3: 64.4: 63.3: 57.2: 48: 38.5: 31.5
Winters in Barcelona are mild. December, January and February are the coldest months, with average temperatures around 14 Â°C (57 Â°F) during the day and 5 Â°C (41 Â°F) at night. Slight frost at night is more common on the hills around the city and in the outer metropolitan area (far from the sea).