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Cornwall weather: Wednesday 30 September, showers turn heavy, 22°C

Published On: 30 September 2026Last Updated: 30 September 2026By
CornishStuff Cornwall weather forecast graphic showing lightning, cloud and sunshine

If you are stepping out this morning, take a jacket you can shed by lunchtime. Wednesday hands Cornwall a bit of everything, early rain, then sunshine, then showers that build as the hours go on, and it feels warm whenever the sun breaks through. Here is how the rest of the week’s weather shapes up.

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Today (Wednesday 30 September)

Early rain in the east clears quickly, leaving a morning of sunshine and a scattering of showers, mainly in the west. Through the afternoon those showers turn more widespread and could get heavy in places. In the sunshine it feels warm, with a high of 22°C.

Tonight

Clear spells and scattered showers carry on into the evening, then the showers become mainly confined to western areas overnight. It turns cooler than last night, dropping to a low of around 10°C.

Thursday (1 October)

A largely dry and bright day for most, with sunny spells breaking through. A few showers are still possible, again leaning towards the west. Temperatures settle back nearer average, with a high around 19°C.

Your daily dose of Cornwall

News, events and goings on across the Duchy

Friday to Sunday

Friday opens dry, but outbreaks of rain are likely to arrive later in the day. That rain clears overnight and leaves a largely dry, bright weekend behind it, with sunny spells on both Saturday and Sunday. Temperatures hold near average. The thing to watch is the dark hours, when patches of fog could form, so an early drive on Saturday or Sunday morning may need a slower start until it lifts.

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