Planning for the weather is an important factor for making your trip to Holualoa a success, especially when you’re splurging. The hottest months are usually August and September, with an average temperature of 24°C, while the coldest months are February and January, with an average of 22°C. The rainiest months in Holualoa are August, June, July and May, with each month seeing an average of 268 mm of rainfall.