Wet Bulb Temperature Calculator
Estimate wet bulb temperature from air temperature and relative humidity using the Stull formula.
Compare Your Options And Get Clear Answers
Estimate wet bulb temperature from air temperature and relative humidity using the Stull formula.
Wet Bulb Temperature Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
Fill in each field with your own numbers.
Calculate
Results update as you change the inputs.
Review
Read the breakdown and the explanation.
Adjust
Change values to compare scenarios.
Wet Quick Guide
Typical values for reference.
| Air temp | Humidity | Wet bulb | Heat stress |
|---|---|---|---|
| 20 °C | 50% | 13.7 °C | Lower |
| 30 °C | 60% | 24.0 °C | Lower |
| 35 °C | 60% | 28.5 °C | High |
| 38 °C | 70% | 33.0 °C | Extreme |
| 40 °C | 40% | 28.6 °C | High |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Wet Bulb Temperature Calculator FAQ
Answers to common questions about this calculator.
The lowest temperature air can reach by evaporating water into it.
It measures heat stress, as sweat cannot cool you in very high wet bulb conditions.
Stull formula (2011) for wet bulb temperature.
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.