There's nothing like an all-inclusive holiday in Iizuna to refresh you, especially when you know what kind of weather to expect. Here's some information to help you decide when to book: The hottest months are usually August and July, with an average temperature of 21°C, while the coldest months are January and February, with an average of 0°C. April and May are the driest months, while July and December are the rainiest months.