| Wed May 22 | Thu May 23 | Fri May 24 | Sat May 25 | |
| Tmin 18-06 |
9°C | 4°C | 4°C | 4°C |
| Tmax 06-18 |
12°C | 8°C | 13°C | 13°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 - Barmouth | Distance |
| Harlech | 10.3 km |
| Gwynedd | 15.8 km |
| Llyn Trawsfynydd | 21.9 km |
| Machynlleth | 28.0 km |
| Forecast: Barmouth Region In the next few days, some sunny spells. Frequent rainfall, especially on Thursday. The daily high increases from 8 degrees on Thursday to 13 degrees on Saturday. On Thursday a fresh wind from the northwest. |