Piar Municipality is a municipality in Monagas State, Venezuela. In the north it borders Caripe Municipality.
Minimum monthly temperature in the Piar municipality lies between 14.3 and 23.1 °C, while maximum temperature is between 23.9 and 33.3 °C. Total annual precipitation fluctuates between 1083 and 1898 mm. Most rain falls between June and August, while the driest quarter comprises February to April.
Coordinates: 9°58′09″N 63°29′19″W / 9.9692°N 63.4885°W