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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Current UK weather desk. Data from national met services via Open-Meteo.
Check the live forecast above before heading out in Risca today; the local valley location can make conditions feel cooler and damper than the wider region, especially in the morning.
What is the weather like in Risca today and this week?
Risca sits in the Ebbw Valley, so it often traps low cloud and mist when surrounding hills are clear. The live forecast above gives you the most accurate hour-by-hour picture for today. For the week ahead, expect a typical mix of Atlantic fronts and drier interludes; the valley can amplify rain totals compared to coastal Newport.
When is the best time to visit Risca?
Late spring (May to June) and early autumn (September) offer the most settled conditions for walking the nearby Cwmcarn Forest Drive or the Sirhowy Valley. Pack a waterproof layer even in summer, as valley showers can arrive quickly. School holidays in late July and August are busiest but bring the warmest average temperatures.
What is the weather in Risca tomorrow?
The live forecast above shows tomorrow’s breakdown by hour. For a reliable view, also check the 10 Day Weather Forecast UK page, which updates with the latest Met Office data for Risca.
Is Risca weather different from Cardiff?
Yes. Risca’s inland valley position means it can be 2–3°C cooler than Cardiff on clear nights, and fog or low cloud often lingers longer. Daytime temperatures are usually similar, but Risca tends to feel more humid in summer.
Where can I find a 14-day forecast for Risca?
Long-range forecasts beyond 7–10 days have low reliability. For the most useful outlook, stick to the 7-day and 10-day data on our UK weather hub, which is updated twice daily from Met Office models.