The TMP (Taichung Metropolitan Park) weather station reports the park’s average annual temperature is approximately 21.6°C (70.9°F) and its annual rainfall is around 1,452mm. May thorough September is known as the pre-humid season; while October through January is the drought season. The months between the two main seasons are relatively humid periods. The park area is distinctively wet or dry, with most of the rain falling during summer. During the drought season, the TMP’s grounds are more arid, this combined with the fierce Northeasterly winds, provides a very harsh environment for plant life.