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Porthmadog Weather forecast
| Tu 18 | We 19 | Th 20 | Fr 21 | Sa 22 | Su 23 | Mo 24 | Tu 25 | |
| Tmax (°C) | 17 | 18 | 20 | 18 | 16 | 18 | 20 | 21 |
| Tmin (°C) | 8 | 8 | 9 | 9 | 11 | 10 | 11 | 12 |
| 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 | 30 % | 20 % | 5 % | 45 % | 55 % | 40 % | 30 % | 25 % |
| Sunshine hours |  |
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| (hrs) | 7.6 | 6.8 | 5.9 | 11.0 | 5.1 | 5.9 | 9.3 | 5.9 |
| UV index | 7 | 4 | 5 | 6 | 5 | 5 | 6 | 5 |
| Sunrise Sunset |
04:50 21:46 |
04:50 21:46 |
04:50 21:46 |
04:50 21:47 |
04:50 21:47 |
04:51 21:47 |
04:51 21:47 |
04:52 21:47 |
| Wind p.m. |  |
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| Bft | N 2-3 | SW 2 | SW 2 | SW 3 | W 2-3 | SW 3 | W 2-3 | SW 2-3 |
Last updated: Tu, 18 Jun, 05:41 IST
| 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 |
