Planning for the weather is a good way to make your trip to Monte Alén relaxing and enjoyable, especially when you're splurging. The hottest months are usually March and April, with an average temperature of 26°C, while the coldest months are July and August, with an average of 25°C. The rainiest months in Monte Alén are October, November, May and April, with each month seeing an average of 356 mm of rainfall.