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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Story Native weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above before heading out in Portsmouth today. The city’s coastal position means conditions can shift quickly, so a quick glance at the radar will tell you if you need a coat or sunnies.
What is the typical weather in Portsmouth?
Portsmouth enjoys a temperate maritime climate, with mild winters and cool summers. Because it sits on the south coast, prevailing south-westerly winds often bring moisture, so rain is fairly evenly spread throughout the year. The live forecast above will show you what’s happening right now, but for planning ahead, the met office weather portsmouth page gives the most reliable official outlook.
How does the coastal location affect day-to-day conditions?
Being on the Solent means sea breezes can make afternoons feel cooler than inland towns, especially in spring and summer. Fog and low cloud are also more common near the harbour. If you’re searching for weather in portsmouth tomorrow, factor in the wind chill – it often drops a couple of degrees compared to the inland forecast.
Is Portsmouth weather usually windy?
Yes, especially in autumn and winter. The city’s exposed coastal position often means moderate to fresh winds. For the strongest gusts, check the portsmouth weather bbc forecast which includes detailed wind speed data.
When is the best time to visit Portsmouth for fine weather?
Late May to early September tend to be warmest and driest, though sea fog can still roll in. For a longer outlook, look up weather in portsmouth 10 days or even a weather portsmouth 14 day forecast to get a sense of the pattern.
How reliable are long-range forecasts like 15 or 30 days?
They indicate trends, not exact conditions. A portsmouth weather 15 days or portsmouth weather 30 days forecast can suggest whether a warm or wet spell is likely, but day-to-day accuracy drops sharply after about a week.
Sources
For more local outlooks, visit our UK weather hub or see the 10 Day Weather Forecast UK for a broader picture.