Planning for the weather is a good way to make your trip to Itahari relaxing and enjoyable, especially when you're splurging. The hottest months are usually April and May with an average temp of 84°F, while the coldest months are January and December with an average of 68°F. The rainiest months in Itahari are July, August, June, and September, with each month seeing an average of 16 inches of rainfall.