Average humidity in Saint Athan
The mean monthly relative humidity over the year in Saint Athan (), the United Kingdom.
* Data from: Cardiff, the United Kingdom (4 KM, 3 Miles).
- On average, December is the most humid month, at 89.0%.
- On average, June is the least humid month, at 73.0%.
- The average annual percentage of humidity is 81%.
Forecast for Saint Athan
Sat May 25
18°C | 8°C
SE 
14 km/h
14 km/h2.7 mm
partly cloudy and slight rain
Sun May 26
16°C | 11°C
W 25 km/h
25 km/h15 mm
broken clouds and rain
Mon May 27
15°C | 10°C
W 22 km/h
22 km/h3.7 mm
partly cloudy and rain
