Visiting local bars in San Jeronimo is better when you know what the weather holds. These temperatures and rainfall averages can help you choose the best time for bar-hopping. The hottest months are usually October and November, with an average temperature of 11°C, while the coldest months are July and June, with an average of 9°C. The rainiest months in San Jeronimo are February, December, January and March, with each month seeing an average of 347 mm of rainfall.