Average May Rainfall for the United Kingdom
The tables below give monthly averages for rainfall during May at cities and towns in the United Kingdom.
Each place has a total for how many days of wet weather it usually gets this month and for the normal amount of precipitation. The calculation of days only includes the days when precipitation totalled at least one millimetre (0.04 inches).
The month's total rainfall is an average of weather data collected from 1991 to 2020.
In May, the entire UK averages 11 days of rain, totalling 71 millimetres (2.8 inches).
Southern England
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 10 | Birmingham | 2.4 | 61 |
| 10 | Bristol | 2.3 | 58 |
| – | Dover | 1.9 | 49 |
| 9 | Isles of Scilly | 1.9 | 48 |
| 8 | London, Greenwich | 1.7 | 44 |
| 8 | London, Kew Gardens | 1.8 | 45 |
| 8 | Norwich | 1.8 | 47 |
| 9 | Nottingham | 2.0 | 50 |
| 10 | Plymouth | 2.4 | 60 |
| 8 | Southampton | 1.9 | 47 |
| 10 | Stoke-on-Trent | 2.3 | 58 |
| 8 | Weymouth | 1.8 | 45 |
| 8 | Worthing | 1.8 | 46 |
Northern England
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| – | Ambleside, Windermere Lake | 4.0 | 101 |
| – | Berwick-upon-Tweed | 1.9 | 48 |
| 11 | Dumfries | 2.7 | 69 |
| 9 | Hull | 1.9 | 48 |
| 10 | Liverpool | 2.1 | 52 |
| 11 | Manchester | 2.2 | 56 |
| – | Middlesbrough | 1.7 | 42 |
| 11 | Newcastle upon Tyne | 2.6 | 65 |
| 11 | Prestwick | 2.1 | 55 |
| 11 | Rochester, Northumberland Park | 2.3 | 58 |
| 9 | Sheffield | 2.1 | 55 |
Wales
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 11 | Cardiff | 3.1 | 78 |
| 11 | Harlech | 2.3 | 57 |
| – | Llandrindod Wells | 3.0 | 76 |
| 10 | Rhyl | 2.1 | 52 |
| 10 | Swansea | 2.5 | 65 |
Scotland
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 10 | Aberdeen | 2.1 | 54 |
| 10 | Dundee | 2.0 | 51 |
| 10 | Edinburgh | 1.9 | 48 |
| 12 | Glasgow | 2.7 | 69 |
| 11 | Inverness | 2.2 | 56 |
| 12 | Kirkwall, Orkney Islands | 2.1 | 54 |
| 12 | Lerwick, Shetland Islands | 2.2 | 57 |
| 14 | Stornoway, Outer Hebrides | 2.7 | 69 |
| 13 | Tiree, Inner Hebrides | 2.6 | 66 |
Northern Ireland
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 12 | Armagh | 2.3 | 58 |
| 11 | Belfast | 2.3 | 60 |
| 14 | Castlederg | 2.8 | 70 |
| 13 | Londonderry | 2.1 | 53 |
| 12 | Warrenpoint | 2.8 | 72 |
Reference
Met Office. Research programmes. Climate science. UK Climate Averages.