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Live forecasts update automatically; written guidance last reviewed 15 June 2026 by the National Report weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above shows the conditions for Machynlleth today. This market town in Powys, sheltered by the Dyfi Valley, often sees changeable weather, with cloud rolling in from the coast and rain arriving at any time of year.
What is the weather like in Machynlleth today and this week?
The weather in Machynlleth is heavily influenced by its position near the Cambrian Mountains and the Dyfi Estuary. The live forecast above gives you the most accurate view for the next few hours, but you can expect a mix of cloud and bright spells, with a chance of drizzle or heavier rain moving in from the west. For a broader view, check the UK weather hub or the 10 day weather forecast UK page. If you are planning ahead, many residents also look up the met office weather Machynlleth or bbc weather Machynlleth for detailed updates.
What about the forecast for tomorrow and the next 14 days?
Tomorrow’s weather in Machynlleth will depend on the position of the Atlantic low-pressure systems. You can use the live forecast above for the most reliable detail on weather Machynlleth tomorrow. For a longer view, the 14 day weather Machynlleth outlook suggests a typical autumn pattern: spells of rain followed by drier, cooler interludes. If you need a more specific timeline, search for weather in Machynlleth 10 days or bbc weather Machynlleth 14 days for comparison.
Is Machynlleth prone to flooding?
Yes, parts of the town near the River Dyfi can flood after prolonged or heavy rainfall. The Met Office issues warnings when necessary, and it is wise to check local alerts if you are visiting or living in low-lying areas.
What is the best time of year to visit Machynlleth?
Late spring and early summer (May to July) tend to offer the driest and mildest conditions, though the weather remains changeable. Autumn brings striking colours in the valley but also more frequent rain and wind.
How does the weather in Machynlleth compare to nearby towns?
Machynlleth is often a touch warmer than higher ground like Cadair Idris, but it can be cloudier and wetter than towns further east, such as Newtown. The coastal influence from Aberdyfi also keeps it milder in winter.