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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Regional Report weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Portsmouth’s weather today is shaped by its south-coast position, bringing mild, changeable conditions with a notable maritime influence. The live forecast above shows the immediate outlook for the city and its surrounding harbours.
What is the general climate of Portsmouth?
Portsmouth enjoys one of the sunniest and warmest climates in the UK, thanks to its sheltered location on the Solent. Winters are typically cool and damp, while summers are pleasantly warm but rarely extreme, with sea breezes often moderating afternoon highs.
Will it rain in Portsmouth tomorrow?
Check the live forecast above for the most accurate timing, but Portsmouth’s weather tomorrow will follow the typical pattern for the region. Showers can arrive quickly from the English Channel, so it’s wise to keep an eye on the met office weather portsmouth updates for the latest radar data.
How reliable are long-range forecasts for Portsmouth?
Forecasts beyond a week can shift, but the 10 day weather forecast UK provides a useful trend. For those planning ahead, the weather in Portsmouth 10 days outlook is generally reliable for broad patterns, though specific rain timings become less certain after day five.
What is the best time to visit Portsmouth for good weather?
Late May to early September offers the most reliable dry and warm spells. July and August average 21°C, but sea breezes can keep the coast cooler than inland. June often has the longest daylight hours and lower rainfall than July.
Does Portsmouth get fog often?
Yes, especially in spring and autumn. Sea fog from the Solent can reduce visibility to under 200 metres, particularly in the morning. It usually clears by midday as the land warms up, but can linger near the harbour and Spinnaker Tower area.
How does the weather in Portsmouth compare to nearby cities?
Portsmouth is generally milder than inland cities like Birmingham Weather or Sheffield Weather, with less frost and snow. It is also sunnier than Bristol Weather on average, but can feel windier due to its coastal exposure.
For the full picture, check the UK weather hub or the Portsmouth weather page. Those wanting a longer view can look at the weather portsmouth 14 day forecast or portsmouth weather 30 days for seasonal trends, but always cross-reference with the live forecast above for the most current data.