Cardiff weather forecast: 80% chance of light rain today, cooler temperatures expected

Cardiff is set for a day of mixed weather, with a significant chance of rain and cooler temperatures. Residents can expect a damp start to the day, with conditions gradually improving as the day progresses.Cardiff Weather TodayToday, September 13, 2026, Cardiff will experience a day marked by a high probability of rain. The forecast indicates a daily chance of rain at 80%, with the condition text describing it as "Light rain." The maximum temperature is expected to reach 20°C, while the minimum temperature will be around 18°C, leading to an average temperature of 19.0°C. Humidity levels are notably high, recorded at 98%, suggesting a muggy atmosphere. The maximum wind speed is predicted to be 33.8 kph.Umbrellas and waterproof footwear advisedGiven the high likelihood of rain throughout the day, it is advisable for residents to carry umbrellas and wear waterproof footwear. The 80% chance of precipitation means that damp conditions are almost certain, and it would be prudent to prepare for wet weather. The high humidity of 98% will also contribute to a feeling of dampness, even when it is not actively raining. While the temperatures are mild, the combination of rain and humidity might make it feel cooler than expected.Cardiff Weather for Upcoming 7 DaysDateMax Temp (C)Min Temp (C)Avg Temp (C)Condition2026-09-13201819.0Light rain2026-09-14221619.0Overcast2026-09-15201216.0Sunny intervals2026-09-16171315.0Sunny intervals2026-09-17171315.0Light showers2026-09-18181516.5Sunny intervals2026-09-19191416.5Sunny intervalsLooking ahead, the weather in Cardiff is expected to remain variable. Tomorrow, September 14, will see overcast conditions with temperatures reaching up to 22°C and a low of 16°C. The latter half of the week shows a trend towards more settled weather, with sunny intervals predicted from September 15 onwards. Temperatures will gradually decrease, with a low of 12°C expected on September 15, and then hover around the mid-teens for the remainder of the week. Light showers are possible on September 17, but overall, the latter part of the week appears to offer more pleasant conditions compared to the start.Source: Data referenced in this article is taken from the latest World News and Live updates. Download the TOI app.