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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Southampton Wire weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above shows Portishead heading into a mild and mostly cloudy spell, with the chance of some brighter intervals breaking through later in the week for this north Somerset coastal town, just across the water from the Bristol Channel.
What is the outlook for the next few days?
Portishead, sitting between the marina and the Gordano Valley, can expect a fairly settled run of weather according to the live forecast above. Gentle breezes off the Bristol Channel will keep temperatures near the seasonal average, though you might notice a little more cloud building in from the west compared to yesterday. The woodlands and the promenade should stay dry through the daytime, with any light rain holding off until the overnight hours.
Will it turn cooler along the coast?
The live forecast above suggests a subtle dip in temperature as the week goes on, typical for Portishead’s exposed position on the channel. The open water keeps the air feeling a little sharper than further inland towards Bristol or Bath, so a light jacket might be useful for an evening walk along the pier. Those heading to Clevedon or the wider South West will find a similar story.
Is Portishead likely to see any rain this week?
For the most part, no. The live forecast above shows just a slim chance of light drizzle late on one or two nights. The daytime should stay dry for the marina and surrounding areas.
How does the weather here compare to inland spots?
Portishead tends to be a degree or two cooler than places like Bristol or Liverpool in the same region, thanks to the sea breeze. The cloud can also hang a little longer over the coast.
Should I check the longer forecast for Portishead?
If you’re planning ahead, the 10-day forecast for Portishead shows a similar pattern settling in, with no major weather warnings expected for the Bristol Channel area.