| Stations: | Precipitation |
| Aberdaron (94 m) | 0.0 mm |
| Aberporth (134 m) | 3.6 mm |
| Capel Curig (215 m) | 0.0 mm |
| Lake Vyrnwy (359 m) | 0.0 mm |
| Milford Haven (32 m) | 0.8 mm |
| Mumbles (32 m) | 0.4 mm |
| Pembrey Burrows (6 m) | 0.4 mm |
| Raf Mona (62 m) | 0.2 mm |
| Rhyl (76 m) | 0.2 mm |
| Sennybridge (307 m) | 2.0 mm |
| St Athan (49 m) | 0.0 mm |
| Trawscoed (62 m) | 0.2 mm |
| Valley (10 m) | 0.0 mm |