The best time to visit San Mateo, Calabarzon, is during the dry season, which typically runs from December to May.During these months, you'll experience pleasant weather with less humidity and a lower chance of rain, making it ideal for exploring the natural attractions and outdoor activities in and around San Mateo. The temperatures are generally warm and comfortable, great for hiking, visiting waterfalls, or simply enjoying the local scenery without the interruption of heavy downpours.For those looking to enjoy the area's natural beauty, particularly the waterfalls and rivers, late in the dry season (April to May) can be excellent. The water levels are still good from the previous rains, but the weather is consistently sunny, allowing for refreshing dips and clear skies for photography.