Monthly weather forecast and climate
Porthmadog, United Kingdom

Average sea temperature - Porthmadog, United Kingdom

The best month for swimming (with the highest average sea temperature) is September (15.7°C).
Coldest months (with the lowest average sea temperature) are February and March (8.3°C).

Average daylight - Porthmadog, United Kingdom

The month with the longest days is June (Average daylight: 16.8h).
The month with shortest days is December (Average daylight: 7.7h).

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