| Tue Jun 18 | Wed Jun 19 | Thu Jun 20 | Fri Jun 21 | |
| Turf condition | damp | dry | dry | wet |
| a.m. | ||||
| p.m. | ||||
| Tmin 18-06 |
7°C | 12°C | 9°C | 12°C |
| Tmax 06-18 |
20°C | 17°C | 15°C | 17°C |
| 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 |
| 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 After a Wednesday with cloudy and sunny spells Thursday will bring overecast. Frequent rainfall, especially on Thursday and Friday. With a high around 17 degrees it's cool. |