Dew Point Calculator

Your details

Choose which variable to solve for. The other two become inputs.
The current air (dry-bulb) temperature.
°C
Relative humidity as a percentage (1-100).
%
Dew pointGetting sticky
16.7

Temperature at which water vapor begins to condense

Relative humidity60%
Air temperature25
Absolute humidity13.82g/m³
Temperature-dew point spread8.3
Comfort levelGetting sticky
16.7 °C
Dry<10Comfortable10-13Slightly humid13-16Getting sticky16-18Uncomfortable18-21Very uncomfortable21-24Oppressive24+

Dew point: 16.7 °C - getting sticky.

  • The temperature-dew point spread is 8.3 °C. A spread below 2.5 °C means fog is likely.
  • Absolute humidity is 13.82 g/m³, meaning each cubic metre of air carries that mass of water vapor.
  • Dew point is a steadier comfort indicator than relative humidity because it does not depend on air temperature - a dew point above 21 °C feels oppressive regardless of the thermometer reading.

Next stepPair the dew point with wind speed and heat index for a fuller picture of outdoor conditions.

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