Event Dates:Mar. 4-6, 2016. Metro Gymnastics Center along with the Metro Boys and Girls Booster Clubs would like to welcome you to the 19th Annual Rose City Challenge, March 4 - 6, 2016.
Osaka: Annual Weather Averages. August is the hottest month in Osaka with an average temperature of 29Â°C (84Â°F) and the coldest is January at 6Â°C (43Â°F) with the most daily sunshine hours at 6.7 in August. The wettest month is June with an average of 230mm of rain.
If you don't mind bringing a coat, you might also enjoy visiting Osaka during January, February, March and December but average temperatures are fairly cool (between 0Â°C / 32.0Â°F and 10Â°C / 50.0Â°F). The warmest time of year in Osaka is in August when it is 29.05Â°C / 84.3Â°F on average, but could get up to 33Â°C / 91.4Â°F maximum. 1  Freezing months: 0 (0Â°C / 32.0Â°F and below) 2  Cold months: 4 (0Â°C / 32.0Â°F to 10Â°C / 50.0Â°F) 3  Cool months: 4 (10Â°C / 50.0Â°F to 20Â°C / 68.0Â°F) 4  Warm months: 4 (20Â°C / 68.0Â°F to 30Â°C / 86.0Â°F)