Estimate wet bulb temperature using air temperature and relative humidity. This calculator shows wet bulb temperature in Fahrenheit and Celsius, plus dew point, heat stress guidance, and humidity comfort notes.
Air temperature:
Enter the current air temperature.
Relative humidity:
Enter the humidity percentage. Higher humidity usually increases wet bulb temperature.
Temperature unit:
You can enter the temperature in Fahrenheit or Celsius. The calculator converts as needed.
Wet bulb result:
The result estimates the temperature reached through evaporative cooling under the entered conditions.
A wet bulb temperature calculator is useful for outdoor work, sports, heat stress checks, weather planning, HVAC, agriculture, gardening, greenhouse monitoring, and understanding hot humid conditions.
Wet bulb temperature can help show how difficult it may be for the body to cool itself through sweating in warm, humid air.
Your wet bulb temperature estimates how cool the air could become through evaporation. When humidity is high, evaporation is limited, so the wet bulb temperature gets closer to the actual air temperature. That can make hot weather feel more stressful.
Wet bulb temperature is an estimate of the lowest temperature air can reach through evaporation under the current temperature and humidity conditions.
No. Dew point is the temperature where air becomes saturated. Wet bulb temperature estimates evaporative cooling and is usually between air temperature and dew point.
High humidity slows evaporation. When evaporation slows, less cooling happens, and wet bulb temperature rises closer to the actual air temperature.
No. Wet bulb temperature is normally equal to or lower than the actual air temperature.