Data Available:

1) Class A Station data

In each of Bhutan's 20 Dzongkhags/Districts, NCHM operates and monitors a Class A (Agro-met) meteorological station. The agro-met stations are manually operated by qualified meteorological technicians, in which the observer takes two regular readings (9:00 AM BST and 3:00 PM BST) and reports these readings to the headquarters. Most of the agro-met stations have data from 1996 to the present, but only a few have started collecting data since the early 2000s.

The following weather variables are observed:

• Rainfall
• Maximum Temperature
• Minimum Temperature
• Relative Humidity
• Wind speed and wind direction (2m)
• Sunshine hours
• Soil temperature (5 cm,10cm,15cm)
• Evaporation

(The data for the parameters mentioned above are available daily, monthly, and annually)

2) Class C Station data

NCHM operates and monitors 64 Class C Stations across the country. Like Class A stations, Class C stations are manned stations with observations recorded either on a chart or read nominally once every day at the same time (usually in the morning). These stations are considered climate stations as they are simply collected to document the climate and are available for assessing climate trends.

The following weather variables are observed:

• Rainfall
• Maximum Temperature
• Minimum Temperature
• Relative Humidity

(The data for the parameters mentioned above are available daily, monthly, and annually)