Latest weather updates and forecast for Cardiff.
Source: Data referenced in this article is taken from https://www.metoffice.gov.uk
Today, September 20, 2026, Cardiff will experience predominantly sunny conditions. The maximum temperature is forecast to reach 20°C, while the minimum temperature will be around 9°C. The average temperature for the day is expected to be 14.5°C. Humidity levels will be relatively high, at 85%, but this is unlikely to detract from the overall pleasant weather. There is a very low chance of rain, with the daily chance of precipitation noted as less than 5%. The maximum wind speed is predicted to be 30.58 kph, providing a refreshing breeze. Sunrise is scheduled for 06:56 and sunset for 19:16, offering a long period of daylight. The warmest days appear to be around September 22nd and September 26th, both forecast to reach a maximum of 22°C.
The outlook for Cardiff over the next seven days indicates a continuation of pleasant weather, with a strong presence of sunshine. Temperatures are expected to remain mild, with highs generally in the low 20s Celsius and lows in the single digits to low teens. there will be some periods of sunny intervals, particularly on September 23rd, 25th, and 26th While most days are predicted to be sunny. There is no significant precipitation expected throughout the week, suggesting a dry spell for the city. Residents can anticipate a generally settled and agreeable weather pattern for the upcoming week.