WattMetrics Weather Station

To accurately track the efficiency of any solar installation, a high-quality weather station is a necessity. The WattMetrics weather sensor platform is designed specifically for solar projects. It provides system builders with an accurate, reliable, flexible and affordable weather station solution.

System Efficiency Metrics

Adding a weather station to a project enables the calculation of real-time total system efficiency.  See this blog post to learn more: System Efficiency Metrics.

Single-Cable Power and Communications

Power and communications are provided to the station via a single cable, making installation quick and easy.

Zero Configuration

All instruments are pre-configured and pre-calibrated. Just connect  the combined power+communications cable to a WattMetrics Universal Acquisition Agent and you're done.

Embeddable Data

Interactive charts with live weather data are easily embeddable in any website.

Unmatched Accuracy

Like all WattMetrics data sources, recorded weather station readings are heavily oversampled, ensuring highly accurate data.

Wind, Humidity and Pressure Sensors Optional

Our flexible platform allows customers to choose the sensors that best fit their specific project.

Multiple Irradiance Sensor Options

The standard irradiance sensor offers a great balance between affordability and accuracy. For more demanding projects, higher-accuracy sensors are available.

Heavy-Duty Instrument Tower

18 gauge steel tubing is zinc-chromate-polymer galvanized with gold irridited leg braces, mast collars, and connecting components.


Irradiance: ±5%

Cell Temperature: ±1%

Ambient Temperature: ±1%

Wind Speed:

  • Range: 0 to 50 m/s (112 mph)
  • Gust Survival: 60 m/s (134 mph)
  • Accuracy: ±0.5 m/s (1.1 mph)
  • Distance Constant (63% recovery): 2.3 m (7.5 ft)
  • Threshold: 0.5 m/s (1.1 mph)

Wind Direction:

  • Sensor: Balanced vane; 16 cm turning radius
  • Damping Ratio: 0.2
  • Accuracy: ±5°
  • Delay Distance (50% recovery): 0.5 m (1.6 ft )
  • Threshold 
    • 10° Displacement: 0.8 m s-1 (1.8 mph)
    • 5° Displacement: 1.8 m/s (4 mph)  

Barometric Pressure:

  • Resolution: ±0.01 mb
  • Operating Temperature: -40° to +60°C
  • Accuracy:  ±0.5 mb @ +20°C; 
    ±1.0 mb @ 0° to 40°C; 
    ±1.5 mb @ -20° to +50°C; 
    ±2.0 mb @ -40° to +60°C


  • Operating Temperature: -40° to +60°C
  • Accuracy at 23°C:  ±1.5% RH
  • Repeatability: better than 0.5% RH

Instrument Tower Height: 84".  An additional 31" extension is available.  A guy wire kit is also available.

More Resources

Installation Instructions

Weather Station Brochure




(click to enlarge)