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Porthmadog Weather forecast
| We 25 | Th 26 | Fr 27 | Sa 28 | Su 29 | Mo 30 | Tu 01 | We 02 | |
| Tmax (°C) | 13 | 16 | 12 | 13 | 15 | 14 | 13 | 13 |
| Tmin (°C) | 4 | 9 | 8 | 6 | 7 | 11 | 8 | 7 |
| 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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| Rain risk | 55 % | 60 % | 60 % | 55 % | 40 % | 55 % | 45 % | 35 % |
| Sunshine hours |  |
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| (hrs) | 0.0 | 0.6 | 3.5 | 2.9 | 1.2 | 1.2 | 2.3 | 2.3 |
| UV index | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 |
| Sunrise Sunset |
07:08 19:07 |
07:10 19:04 |
07:12 19:02 |
07:13 18:59 |
07:15 18:57 |
07:17 18:55 |
07:19 18:52 |
07:20 18:50 |
| Wind p.m. |  |
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| Bft | NE 1-2 | NE 1-2 | NW 2-3 | SW 2-3 | S 2-3 | NW 4 | N 2 | SW 2 |
Last updated: Wed 25 Sep 05:09 EDT
| Nearby Forecast Locations - Porthmadog | Distance |
| Snowdonia | 15.0 km |
| Llyn Trawsfynydd | 15.0 km |
| Caernarfon | 19.3 km |
| Gwynedd | 21.7 km |
| Harlech | 22.4 km |
| Menai Bridge | 24.5 km |
| Barmouth | 31.6 km |
| Raf Mona | 33.7 km |
| Bala Lake | 33.9 km |
| Abersoch | 34.6 km |
| Conwy | 35.7 km |
| Bala | 36.4 km |
| Llyn Brenig | 39.0 km |
| Holyhead | 41.0 km |
| Llŷn Peninsula | 42.2 km |
| Llangollen | 45.0 km |
| Colwyn Bay | 45.8 km |
| Aberdaron | 49.9 km |
| Lake Vyrnwy | 49.9 km |
| Machynlleth | 54.2 km |
| Newtown | 77.5 km |
