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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the MarketUK weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Based on the live forecast above, Saint Mellons currently sees temperatures in the low teens with broken cloud and a moderate south-westerly breeze. Conditions remain dry through the morning, with rain likely arriving after midday.
What is the current weather in Saint Mellons?
The live forecast shows a temperature range of 12–14°C, with cloud cover at roughly 60% and wind speeds around 15 mph from the south-west. Humidity is moderate, near 70%, keeping the air feeling fresh rather than muggy. Visibility remains good at over 10 miles.
What will the weather be like later today?
Cloud will thicken through the afternoon, bringing a band of rain that should clear by early evening. Highs reach 15°C, then drop to 9°C overnight. Wind gusts may reach 25 mph, but no gale warnings are in effect for the Cardiff area.
Will it rain in Saint Mellons today?
Rain is most likely between 1pm and 4pm, with a 60% chance. The band of rain moves east quickly, so total accumulation should be under 5 mm. Dry spells return by evening.
How windy is it in Saint Mellons right now?
Wind speeds are moderate at 15 mph from the south-west, gusting to 22 mph. This is typical for autumn in the Vale of Glamorgan. No wind warnings are active.
What is the UV index for Saint Mellons?
The UV index is low at 1, with thick cloud limiting sun exposure. No sunscreen needed for short outdoor stays.
Sources
For a wider view, visit the UK weather hub or check the 10 Day Weather Forecast UK for other regions.