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Porthmadog (52° 55' N/4° 07' W)
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| Fr 20 | Sa 21 | Su 22 | Mo 23 | Tu 24 | We 25 | Th 26 | Fr 27 | Sa 28 | Su 29 | Mo 30 | Tu 01 | We 02 | Th 03 | |
| Tmin (°C) | 12 | 11 | 14 | 13 | 9 | 9 | 6 | 5 | 3 | 4 | 5 | 6 | 10 | 10 |
| Tmax (°C) | 19 | 21 | 19 | 18 | 15 | 13 | 12 | 11 | 12 | 13 | 14 | 15 | 15 | 17 |
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| a.m. | E 2 | E 4 | E 4 | NE 3 | SW 3 | NW 4 | NW 4 | W 8 | SW 1 | SW 5 | SW 4 | E 3 | SW 8 | S 4 |
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| E 3 | NE 6 | E 3 | N 5 | SW 3 | NE 3 | W 7 | W 10 | SW 3 | W 7 | SW 5 | S 5 | SW 7 | S 4 | |
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| E 4 | NE 4 | E 3 | N 2 | E 2 | N 3 | SW 4 | W 2 | NE 1 | W 3 | E 2 | SE 6 | SW 6 | S 2 | |
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| Precipitation (mm) | 0 | 0 | 12.8 | 3.5 | 5.2 | 13.6 | 4.8 | 6.1 | 0 | 0 | 0 | 0 | 7.5 | 0 |
| Rain risk | 20 % | 35 % | 55 % | 35 % | 45 % | 80 % | 60 % | 65 % | 30 % | 40 % | 35 % | 20 % | 55 % | 40 % |
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| Sunshine hours (hrs) | 6.2 | 4.9 | 0.6 | 2.4 | 0.6 | 0.0 | 1.2 | 3.5 | 3.5 | 4.7 | 1.7 | 2.9 | 2.3 | 1.7 |
| UV index | 3 | 3 | 2 | 3 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Sunrise Sunset |
07:00 19:19 |
07:01 19:17 |
07:03 19:14 |
07:05 19:12 |
07:07 19:09 |
07:08 19:07 |
07:10 19:04 |
07:12 19:02 |
07:14 19:00 |
07:15 18:57 |
07:17 18:55 |
07:19 18:52 |
07:21 18:50 |
07:22 18:48 |
Last updated: Fr, 20 Sep, 19:06 BST
(Wind Speed in knots)
Wind data for guidance only, actually gusts may be considerably higher than those shown.
