Average humidity in Portsmouth
The mean monthly relative humidity over the year in Portsmouth (Hampshire), the United Kingdom.
- On average, January is the most humid month, at 91.0%.
- On average, April is the least humid month, at 73.0%.
- The average annual percentage of humidity is 82%.
Weather Forecasts for Portsmouth
broken clouds and chance of slight rain
partly cloudy and small chance of slight rain
overcast and chance of rain