| Wed Jun 19 | Thu Jun 20 | Fri Jun 21 | Sat Jun 22 | |
| Tmin 18-06 |
10°C | 12°C | 8°C | 11°C |
| Tmax 06-18 |
21°C | 19°C | 16°C | 15°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 Many clouds and hardly any sun. On Wednesday some sunny spells. However, on Thursday and Friday rain is to expected. The daily high falls from 19 degrees on Wednesday to 15 degrees on Friday. |