Taking the local weather in San José de la Montaña into account is an important factor for planning your visit, especially if you plan to spend your trip by the pool. The hottest months are usually September and January, with an average temperature of 15°C, while the coldest months are January and February, with an average of 15°C. The rainiest months in San José de la Montaña are May, April, October and November, with each month seeing an average of 570 mm of rainfall.