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Live forecasts update automatically; written guidance last reviewed 13 June 2026 by the Insight Britain weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above provides an at-a-glance view of current conditions and the next few days for Porthmadog, the gateway to Snowdonia. This guide explains how to use that information and what to expect from the local climate throughout the year.
How should I read the live forecast above for Porthmadog?
The widget shows a temperature range, precipitation probability, wind speed and direction, and a weather icon. For Porthmadog, pay particular attention to the wind direction – south-westerlies often bring rain from the Irish Sea, while north-westerlies can bring clearer but cooler conditions. The 10-day forecast extends the picture, and any UK weather warnings are highlighted when severe conditions are expected.
What is Porthmadog’s typical climate through the seasons?
Porthmadog has a mild maritime climate, typical of coastal Wales. Winters are cool but rarely freezing, with daytime highs in single figures. Summers are pleasantly warm, with temperatures occasionally reaching the low twenties Celsius. Rainfall is frequent year-round, with autumn and winter the wettest. The town sits at the mouth of the Glaslyn estuary, sheltered from the west by hills but exposed to winds from the Irish Sea. Snow is rare but can dust the surrounding hills.
When is the best time to visit Porthmadog and what should I pack?
Late spring (May to June) and early autumn (September) offer the best balance of mild weather and fewer crowds. Summer (July–August) is the warmest but busiest. Pack layers: a waterproof jacket is essential even in summer, and a fleece or jumper for cooler evenings. Comfortable walking shoes are recommended for exploring the coast and hills.
Which nearby areas are worth checking as well?
Porthmadog is the perfect base for exploring the wider region. Check the forecast for Snowdonia for mountain conditions, Pwllheli and Abersoch for the Llyn Peninsula, and Barmouth further down the coast. Each has its own microclimate, so comparing them with the live forecast above is valuable.
What will the weather be in Porthmadog tomorrow?
Check the live forecast above for the most accurate prediction. Typically, tomorrow will follow the current trend: if a low-pressure system is approaching, expect cloud and rain; if high pressure dominates, a drier day is likely. The coast can bring local sea breezes.
What is the 10–14 day outlook for Porthmadog?
Long-range forecasts are less reliable than short-term ones. The live forecast above provides the latest 10-day view. Beyond that, general patterns from the Met Office and our UK weather hub can indicate whether unsettled or settled conditions are expected.
Does it rain a lot in Porthmadog?
Yes, Porthmadog receives significant rainfall, especially in autumn and winter. Its location on the west coast and near the Snowdonia hills means moist air rises and condenses. However, there can be dry spells, and summer rainfall is often lighter and less frequent.
Is Porthmadog often windy?
The town can be breezy, particularly during autumn and winter when Atlantic storms pass through. The estuary and harbour offer some shelter, but exposed coastal areas and the nearby hills can experience strong gusts. Always check the wind reading on the live forecast.