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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the StoryShift weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Cardiff’s weather is mild and changeable, with the live forecast above showing today’s conditions. Expect cool winters, warm summers, and rain spread through the year – spring and early autumn often give the best balance of sunshine and comfort for a visit.
When is the best time to visit Cardiff for decent weather?
May to September brings the highest temperatures and longest daylight hours, making it ideal for exploring the bay, castle and parks. July and August are the warmest but also the wettest on average. For fewer crowds and still pleasant conditions, late May, June or early September work well. School holidays in July and August push up accommodation prices, so book ahead if travelling then.
What should you pack for a trip to Cardiff?
A waterproof jacket is essential year-round – rain can arrive at any season. From November to March, pack layers, a warm coat and sturdy shoes. In summer (June to August), light clothing plus a rainproof top is sensible; evenings can feel cool, so bring a fleece or jumper. Umbrellas are useful but can struggle in gusty conditions along the coast.
Frequently asked questions about Cardiff weather
Does it rain a lot in Cardiff?
Yes, Cardiff sees around 1,100mm of rain a year, spread fairly evenly. The rain is often light to moderate, and many days have at least some drizzle. A waterproof jacket is a sensible everyday item.
What is the weather in Cardiff tomorrow and this weekend?
For the weather in Cardiff tomorrow and Cardiff weather Saturday, check the live forecast above. Typically, the pattern is changeable – expect a mix of cloud, sun and occasional showers, with temperatures around the seasonal average.
Are there weather warnings for Cardiff?
The Met Office issues Cardiff weather warning alerts for strong winds, heavy rain or snow. These are most common in winter and early spring. The live forecast above will note any active warnings; always check before travel.
For planning further ahead, check the 10-day weather forecast UK or compare conditions in Bristol Weather just across the Severn. If you need a longer view, the weather in Cardiff 10 days and weather Cardiff 14 days are updated daily, while a 21 day weather forecast Cardiff gives a general trend. For local detail, BBC Wales Cardiff weather and BBC weather Cardiff CF14 are reliable sources.