You'll likely spend much of your trip indoors, but if you're planning to venture beyond the casino, taking a look at local weather data can help you. The hottest months are usually August and July, with an average temperature of 23°C, while the coldest months are February and January, with an average of 3°C. The rainiest months in Tsubame are December, July, January and November, with each month seeing an average of 211 mm of rainfall.