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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the UrbanMixr weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
For London over the next 30 days, the live forecast above shows a mix of mild spells and cooler, wetter interlocks typical of the season. Expect temperatures to vary noticeably week to week, so checking the 14‑day outlook regularly will help you plan around any settled windows.
What does the 30‑day forecast for London actually tell you?
Beyond about 10 days, forecast models shift from pinpoint accuracy to broad trends. The 30‑day outlook highlights dominant weather patterns – for example, whether high pressure is likely to bring dry, settled conditions or if Atlantic lows will deliver frequent rain. For day‑to‑day decisions, the weather london 14 days and london weather 15 days sections of the live forecast above are far more reliable. If you need a longer view, the 21 day weather forecast london can help you spot a potential fine spell for a weekend trip.
What should you pack for a month in London?
Layering is essential. Even in summer, evenings can turn cool, and rain is never far away. A waterproof jacket, comfortable walking shoes, and a mix of short‑ and long‑sleeved tops will cover most conditions. If you’re checking london weather 30 days bbc or bbc weather 21 day forecast london, note that the temperature range over a month can easily span 10–12°C, so pack accordingly. Umbrellas are useful, but a hooded coat often copes better with London’s gusty showers.
Is the 30‑day forecast reliable?
Beyond 10 days, confidence drops significantly. The 30‑day outlook shows broad trends – such as pressure patterns – not exact daily weather. For precise planning, use the london weather 30 days met office forecast alongside the shorter‑range updates in the live forecast above.
How does London weather change over 30 days?
London’s maritime climate means conditions can shift from a warm, dry spell to cool, wet days within a week. The london weather 30 days met office 14 days view is useful for tracking these transitions. Expect at least one or two frontal systems to pass through in any month.
What’s the best time to visit London for 30 days?
Late spring (May–June) and early autumn (September) offer the best balance of mild temperatures, lower rainfall, and longer daylight. July and August are warmest but busiest. Check london weather 30 days gismeteo for a seasonal comparison if you’re flexible on dates.
For a broader view of conditions across Britain, visit our UK weather hub. If you’re planning a trip elsewhere, the 10 day weather forecast UK page covers major cities including Birmingham, Liverpool, Glasgow, Bristol and Sheffield.