Planning for the weather is a good way to make your trip to Jailolo relaxing and enjoyable, especially when you're splurging. The hottest months are usually May and November, with an average temperature of 27°C, while the coldest months are July and August, with an average of 27°C. The rainiest months in Jailolo are June, May, July and December, with each month seeing an average of 331 mm of rainfall.