| Fri May 24 | Sat May 25 | Sun May 26 | Mon May 27 | |
| Tmin 18-06 |
6°C | 5°C | 6°C | 9°C |
| Tmax 06-18 |
12°C | 14°C | 15°C | 13°C |
| morning 24-06 |
||||
| a.m. 06-12 |
||||
| p.m. 12-18 |
||||
| evening 18-24 |
| 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 |
| Forecast: Porthmadog Region While the weather on Saturday is still clear clouds will increase. But on Monday rain is to be expected. The daily high temperature near 12 degrees. |