| Wed May 22 | Thu May 23 | Fri May 24 | Sat May 25 | |
| Tmin 18-06 |
48°F | 42°F | 42°F | 41°F |
| Tmax 06-18 |
53°F | 46°F | 53°F | 57°F |
| 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 on Thursday it's still partly sunny clouds will subsequently decrease. But on Thursday rain is to be expected. The daily high increases from 7 degrees on Thursday to 13 degrees on Friday. On Thursday a fresh wind from the north. |