| Sat May 25 | Sun May 26 | Mon May 27 | Tue May 28 | |
| Tmin 18-06 |
37°F | 41°F | 42°F | 44°F |
| Tmax 06-18 |
55°F | 55°F | 51°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 After a fine Sunday, Monday is mostly cloudy. With it on Tuesday showers, on Monday it will be raining at times. The maximum temperature lies around 12 degrees. |