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 22°C, while the coldest months are January and February, with an average of 5°C. The rainiest months in Shikokuchuo are July, June, September and August, with each month seeing an average of 348 mm of rainfall.