Normally, you can expect the weather in Porthmadog in the month of July is 14 with a typical high being 18 with low daily temperautes being 13 celsius. We have put some more information here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 14 |
| High Temperature | 18 |
| Low Temperature | 13 |
Useful Links: Porthmadog Weather: Average Weather & Yearly Climate