You'll likely spend much of your trip indoors, but if you're planning to venture beyond the casino, looking at local weather trends is a good idea. The hottest months are usually August and July, with an average temperature of 25°C, while the coldest months are January and February, with an average of 6°C. The rainiest months in Akishima are September, October, June and July, with each month seeing an average of 234 mm of rainfall.