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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the UrbanMixr weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above for Risca today, then plan around the changeable conditions typical for this South Wales valley town. Spring and autumn offer the best balance of mild weather and lighter visitor numbers, though rain is common year-round so pack a waterproof.
When should you visit Risca?
Late spring (May–June) and early autumn (September–October) give you the most reliable dry spells without the peak crowds. Summer highs reach about 20°C, but July and August can bring heavy showers; winter temperatures hover around 5–8°C with frost possible. For outdoor walks along the Sirhowy Valley or the nearby Fourteen Locks, May is the pick – longer daylight and fewer rain days than later months.
What should you expect this week?
The live forecast shows the immediate pattern, but Risca’s weather often changes quickly as Atlantic fronts roll in. If you’re checking weather in Risca 10 days or weather Risca 7 days ahead, expect a mix of cloud, light rain and occasional brighter intervals. Wind speeds stay moderate, and fog can settle in the valley on still mornings. For a longer outlook, the weather Risca 14 days and Risca weather 90 days trends point to typical seasonal shifts rather than extremes.
Is Risca prone to flooding?
Yes, parts of Risca near the River Ebbw and Sirhowy River can flood after prolonged rain. Check local alerts on gov.uk and the Met Office if you’re visiting during wet periods, especially in winter.
Does Risca get snow?
Light snowfall occurs 5–10 days per year on average, usually in January or February. It rarely settles for long because the valley stays relatively mild, but higher ground above the town may see more.
Where can I get reliable forecasts?
Use the live forecast above, plus BBC Weather Risca and the weather Risca Met Office page for official warnings. For a quick outlook, our 10 day weather forecast UK covers the whole country.
For more destinations, see our UK weather hub or check conditions in nearby Bristol Weather.