Average Humidity for the United Kingdom in September
The average humidity levels in September are listed below for cities and towns throughout the United Kingdom. The tables give the month's daily averages for the highest and lowest relative humidity levels.
Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold.
All the numbers here are based on weather data collected from 1961 to 1990.
You can jump to a separate table for each country: England, Wales, Scotland and Northern Ireland.
England
| Place | High | Low |
|---|---|---|
| Birmingham | 92 | 67 |
| Bournemouth | 96 | 69 |
| London | 96 | 67 |
| Manchester | 89 | 68 |
| Plymouth | 91 | 75 |
| Ramsgate | 91 | 70 |
Wales
| Place | High | Low |
|---|---|---|
| Aberporth | 90 | 77 |
| Cardiff | 92 | 73 |
| Valley, Anglesey | 90 | 75 |
Scotland
| Place | High | Low |
|---|---|---|
| Aberdeen | 91 | 70 |
| Edinburgh | 91 | 70 |
| Forres | 89 | 69 |
| Lerwick, Shetland Islands | 90 | 85 |
| Stornoway, Outer Hebrides | 91 | 81 |
| Tiree, Inner Hebrides | 90 | 81 |
Northern Ireland
| Place | High | Low |
|---|---|---|
| Belfast | 92 | 74 |
Reference
World Data Center for Meteorology. Climate of the World.