| Fri May 24 | Sat May 25 | Sun May 26 | Mon May 27 | |
| Turf condition | wet | wet | dry | dry |
| a.m. | ||||
| p.m. | ||||
| Tmin 18-06 |
3°C | 2°C | 2°C | 7°C |
| Tmax 06-18 |
10°C | 14°C | 15°C | 12°C |
| morning 24-06 |
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| a.m. 06-12 |
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| p.m. 12-18 |
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| evening 18-24 |
| Nearby Forecast Locations - Merthyr Tydfil | Distance |
| Caerphilly | 21.2 km |
| Brecon | 22.3 km |
| Cardiff | 28.4 km |
| Forecast: Merthyr Tydfil Region On Saturday it is still mostly sunny, clouds will increase subsequently. But on Monday rain is to be expected. The daily high temperature near 14 degrees. On Monday a fresh wind from the southwest. |