Under the Köppen climate classification system, Manila features a tropical wet and dry climate that borders on a tropical monsoon climate. Together with the rest of the Philippines, Manila lies entirely within the tropics. Its proximity to the equator means that the temperature range is very small, rarely going lower than 20°C and going higher than 38°C. However, humidity levels are usually very high which makes it feel much warmer. It has a distinct, albeit relatively short dry season from January through April, and a relatively lengthy wet season from May through December.