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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 ·
Barmouth weather is shaped by its coastal position on the Mawddach Estuary and the nearby hills of Snowdonia. The live forecast above shows your local conditions for the next few hours and days, giving you the information you need to plan walks on the beach or trips into the surrounding countryside.
How should you read the live forecast above for Barmouth?
The live forecast above displays the current conditions, the hourly breakdown and the daily outlook for Barmouth. Look at the cloud cover and precipitation icons to judge whether rain is likely, and check the wind speed and direction – a south-westerly wind often brings Atlantic moisture. The temperature shown feels cooler near the coast, especially when the sea breeze picks up in the afternoon.
What is Barmouth’s typical climate through the seasons?
Like most of Wales, Barmouth has a maritime climate: mild winters, cool summers and rainfall spread across the year. Winter daytime highs are cool, with frost rare near the sea; overnight lows stay above freezing more often than inland. Summer days are pleasant but not hot, with the chance of rain on about half of all days. Autumn and spring are transitional, often bringing brisk winds and showery spells. Rainfall is fairly high – around 1,200 mm annually – with October to January the wettest months and April to June relatively drier.
How does local geography affect Barmouth weather?
The town sits between Cardigan Bay and the foothills of Snowdonia. The sea moderates temperatures, keeping the coast a couple of degrees cooler in summer and milder in winter than inland valleys. The hills to the east can cause cloud to build and produce localised showers, especially in the afternoon. The Mawddach Estuary funnels winds, so gusts can be stronger than the open coast. Fog is uncommon but can form over the estuary on calm, clear nights.
When is the best time to visit Barmouth and what should you pack?
Late spring (May to June) and early autumn (September) offer the best balance of mild weather and lower rainfall. Summer holidays (July to August) are busiest and warmest, but rain is still possible. Pack layers, a waterproof jacket and sturdy footwear year‑round. Sunscreen and a hat are useful on any clear day, even when the breeze feels cool.
Which nearby areas do readers also check?
People planning trips around this part of Wales often look at the forecasts for Porthmadog, Pwllheli and Abersoch further along the Llyn Peninsula, or inland at Snowdonia for mountain conditions. The Aberystwyth forecast is useful if you are heading south, and Caernarfon gives a good indication of weather in the north of the region.
What will the weather be in Barmouth tomorrow?
The live forecast above shows tomorrow’s hourly breakdown for Barmouth. Look for the day‑ahead tab to see temperature trends, rain probability and wind speed. In the maritime climate, conditions can change quickly, so check again in the morning for updates.
How reliable is the 10‑ to 14‑day outlook for Barmouth?
Long‑range forecasts for Barmouth give a general sense of weather patterns, such as whether high or low pressure is likely. Confidence drops beyond seven days, especially for rain timing and wind strength. Use the 10‑day forecast on our 10‑day forecast page for the latest outlook.
Does it rain a lot in Barmouth?
Yes, Barmouth receives above‑average rainfall for the UK, around 1,200 mm a year. Rain falls on roughly 150–170 days annually, with autumn and winter the wettest seasons. However, showers are often short and can clear quickly, leaving sunny spells in between.
Should I check weather warnings before visiting Barmouth?
It is wise to check UK weather warnings for Barmouth, especially during winter storms or when strong winds are forecast. The Met Office issues yellow, amber and red warnings for rain, wind and coastal conditions that could affect travel or outdoor plans along the coast and estuary.