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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Reading Wire weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
If you’re heading out in Portsmouth today, expect the live forecast above to guide your plans, as the city’s coastal position often brings quick changes from the Solent. A little preparation helps you stay comfortable no matter what the day brings.
What makes Portsmouth’s weather different from inland towns?
Being a port city on the south coast, Portsmouth tends to be milder in winter and cooler in summer than places further inland like Birmingham or Sheffield. Sea breezes can freshen up the air, but they also bring a higher chance of cloud and drizzle rolling in from the Solent. Rain often arrives on south-westerly winds, so if you see the live forecast above showing a change, it’s wise to have a light jacket ready.
How reliable are forecasts for Portsmouth?
Local forecasts, like the one above, are usually reliable for the next 24 to 48 hours, but the city’s coastal microclimate can cause surprises. The Met Office uses data from nearby weather stations to keep predictions accurate. For a broader outlook, check our 10 Day Weather Forecast UK page to see trends across the week.
Does Portsmouth get much snow?
Snow is rare in Portsmouth because of its mild coastal climate. When it does fall, it usually melts quickly. You’re more likely to see frosty mornings or a wintry mix in January and February.
Is it often foggy in Portsmouth?
Fog can form in autumn and winter, especially in the morning over harbours and the Solent. It usually lifts by midday as the sun warms the land. Check the live forecast above if you’re planning an early ferry or drive.
What’s the best time to visit Portsmouth for good weather?
Late spring (May to June) and early autumn (September) offer the best balance of warmth and fewer crowds. Summer can be pleasant but often brings sea fog or brisk winds from the south-west.