Though weather is just one factor, it can really affect your travel plans, especially if you are planning a longer stay in Olanguina. The hottest months are usually February and January with an average temp of 76°F, while the coldest months are July and August with an average of 72°F. The rainiest months in Olanguina are October, May, September, and November, with each month seeing an average of 9 inches of rainfall.