For the decades from 1961 to 1990 - designated by the World Meteorological Organization as the normal period - the average annual precipitation on the Zugspitze was 2,003.1 mm; the wettest month being April with 199 mm, and the driest, October with 108.8 mm. By comparison the values for 2009 were 2,070.8 mm, the wettest month being March with 326.2 mm and the driest, January, with 56.4 mm. The average temperature in the normal period was −4.8 Celsius, with July and August being the warmest at 2.2 °C and February, the coldest, with −11.4 °C. By comparison the average temperature in 2009 was −4.2 °C, the warmest month was August at 5.3 °C and the coldest was February at −13.5 °C. The average sunshine during the normal period was 1,846.3 hours per year, the sunniest month being October with 188.8 hours and the darkest being December with 116.1 hours. In 2009 there were 1,836.3 hours of sunshine, the least occurring in February with just 95.4 hours and the most in April with 219 hours. In 2009, according to the weather survey by the German Met Office, the Zugspitze was the coldest place in Germany with a mean annual temperature of −4.2 °C.