| Thu May 23 | Fri May 24 | Sat May 25 | Sun May 26 | |
| Tmin 18-06 |
41°F | 39°F | 37°F | 39°F |
| Tmax 06-18 |
46°F | 53°F | 55°F | 53°F |
| 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 Scattered clouds and sunny spells; both will be present in the coming days. Frequent rainfall, especially on Sunday. Daytime temperature reaches 12 degrees. |