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| Th Jan 14 | Fr Jan 15 | Sa Jan 16 | Su Jan 17 | |
| Tmin 18-06 |
7°C | 5°C | 4°C | 3°C |
| Tmax 06-18 |
9°C | 7°C | 6°C | 6°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 |
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| Nearby Forecast Locations - Holyhead | Distance |
| Raf Mona | 11.1 km |
| Caernarfon | 22.0 km |
| Menai Bridge | 25.8 km |
| Porthmadog | 41.0 km |
| Snowdonia | 43.4 km |
| Conwy | 46.8 km |
| Abersoch | 48.3 km |
| Llŷn Peninsula | 48.7 km |
| Aberdaron | 53.6 km |
| Llyn Trawsfynydd | 55.9 km |
| Harlech | 57.3 km |
| Gwynedd | 62.1 km |
| Barmouth | 67.6 km |