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Porthmadog (52° 55' N/4° 07' W)
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| We 31 | Th 01 | Fr 02 | Sa 03 | Su 04 | Mo 05 | Tu 06 | We 07 | Th 08 | Fr 09 | Sa 10 | Su 11 | Mo 12 | Tu 13 | |
| Tmin (°F) | 53 | 55 | 55 | 51 | 51 | 62 | 53 | 53 | 59 | 59 | 51 | 50 | 51 | 55 |
| Tmax (°F) | 77 | 73 | 68 | 64 | 66 | 66 | 62 | 62 | 64 | 66 | 64 | 62 | 62 | 62 |
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| a.m. | E 1 | E 1 | SW 3-4 | SW 2 | SW 3-4 | SW 3-4 | SW 2-3 | SW 3-4 | SW 3 | SW 2-3 | SW 2-3 | SW 3-4 | SW 3 | SW 3-4 |
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| SW 2 | SW 2 | SW 3-4 | SW 3 | SW 4 | SW 3 | SW 3-4 | SW 3-4 | SW 3 | SW 3 | SW 3 | SW 3-4 | SW 3 | SW 3-4 | |
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| S 1 | SW 2 | SW 3 | SW 2 | SW 4 | SW 2 | SW 3 | SW 2-3 | SW 3 | SW 2 | SW 2-3 | SW 3 | SW 3 | SW 2-3 | |
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| Precipitation (mm) | 0 | 0 | 3.2 | 0 | 1.6 | 18.7 | 0.9 | 12.6 | 7.6 | 1.6 | 0 | 3.7 | 0 | 1.8 |
| Rain risk | 10 % | 20 % | 80 % | 15 % | 60 % | 90 % | 55 % | 75 % | 70 % | 55 % | 45 % | 70 % | 45 % | 55 % |
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| Sunshine hours (hrs) | 5.5 | 7.8 | 3.1 | 11.6 | 5.4 | 0.8 | 6.9 | 2.3 | 1.5 | 5.3 | 3.8 | 4.5 | 6.0 | 4.5 |
| UV index | 5 | 5 | 4 | 6 | 5 | 3 | 5 | 4 | 4 | 5 | 4 | 5 | 5 | 4 |
| Sunrise Sunset |
05:34 21:11 |
05:36 21:09 |
05:37 21:08 |
05:39 21:06 |
05:40 21:04 |
05:42 21:02 |
05:44 21:00 |
05:45 20:58 |
05:47 20:56 |
05:49 20:54 |
05:50 20:52 |
05:52 20:50 |
05:54 20:48 |
05:55 20:46 |
Last updated: Wed 31 Jul 10:56 EDT
(Wind Speed in Bft)
Wind data for guidance only, actually gusts may be considerably higher than those shown.
