Planning for the weather is an important factor for making your trip to Tamagusuku-son a success, especially when you're splurging. The hottest months are usually August and July, with an average temperature of 28°C, while the coldest months are January and February, with an average of 19°C. The rainiest months in Tamagusuku-son are June, May, August and October, with each month seeing an average of 294 mm of rainfall.