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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 ·
Weather Underground provides hyper-local forecasts and historical data, drawing on a global network of personal weather stations. For Southampton and the south coast, it offers a useful layer of detail beyond standard forecasts, particularly for tracking real-time conditions across the Solent and New Forest.
What does Weather Underground offer for Southampton?
Weather Underground (often abbreviated to WU) crowdsources data from thousands of privately-owned weather stations, including several around Hampshire and the Isle of Wight. This gives you a street-level view of temperature, wind and rainfall, which is especially handy when the weather varies between the city centre and coastal suburbs like Weston or Netley. The weather underground app and website both display this data on an interactive weather underground radar map, letting you see showers moving in from the Channel before they arrive. You can also check the weather underground history for a specific date, which is useful for gardeners or event planners comparing this year’s conditions to previous seasons.
How does it compare to the Met Office?
While the Met Office remains the official UK source, Weather Underground’s strength is its weather underground members network. Instead of relying solely on official stations, you can view readings from a neighbour’s weather underground weather station in your postcode. This can be more accurate for very localised conditions, such as fog in the Test Valley or a sea breeze at Calshot. The weather underground 10-day forecast pulls from multiple models, giving you a second opinion on the outlook for the Southampton Boat Show or a weekend walk on the South Downs. For developers, the weather underground api allows integration of this data into custom projects, though note that free access tiers have changed in recent years.
Is Weather Underground free to use?
Yes, the website and mobile app are free. You can view current conditions, radar and forecasts without paying. The historical data and API now require a subscription for heavy commercial use, but casual browsing remains open.
Can I add my own weather station to the network?
Yes. If you own a compatible personal weather station, you can register it on Weather Underground and share your data. The station must connect to the internet via Wi-Fi or a bridge. Your readings then appear on the map for your area.
How accurate is the 10-day forecast on Weather Underground?
Accuracy decreases after day five, as with any forecast. The weather underground 10-day is useful for spotting trends, but for day-to-day planning in Southampton, combine it with the live forecast above and the Met Office’s local warnings.
For the latest conditions across the region, see our UK weather hub or check the 10 Day Weather Forecast UK. More detailed forecasts for nearby cities are available on our Bristol Weather page.