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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the WordPatch weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Lewes enjoys a temperate South East climate – mild winters and warm summers, with rain spread throughout the year. The best months are May to September, when the South Downs are at their finest and visitor numbers stay lower than the nearby coast.
When should I visit Lewes?
Aim for late spring (May–June) or early autumn (September). July and August are the warmest but busiest, especially during school holidays (late July to early September). May, June and September offer a good balance of sunshine, pleasant temperatures and lower accommodation rates. For a quick check of conditions, the live forecast above gives weather in Lewes tomorrow and for the days ahead.
What should I pack?
Layering is essential. A waterproof jacket is useful any month; summer needs light clothing plus a jumper for evenings; winter requires a warm coat, hat and gloves. Comfortable walking shoes are a must for the Downs. If you’re checking BBC Weather Lewes 14 day forecasts, you’ll see that rain can arrive suddenly, so a packable umbrella never goes amiss.
How reliable is the Met Office forecast for Lewes?
The Met Office uses local radar and monitoring stations, making its short-term predictions very accurate. For a seven-day outlook, it’s a dependable source. You can check Met Office weather Lewes hourly data for detailed planning.
Does Lewes get much snow?
Snow is uncommon but possible – typically 5–10 days of snow or sleet each year, with occasional heavier falls every few years. Cold spells are usually short-lived thanks to the mild maritime influence.
What about flooding?
Lewes has flood defences along the River Ouse, but heavy rain can still cause localised flooding. Always check live alerts on Gov.uk before trips, especially if you’re looking at weather in Lewes 10 days ahead during autumn.
For broader UK conditions, visit our UK weather hub or check the 10 Day Weather Forecast UK page. If you’re comparing destinations, note that Lewes tends to be drier than western cities such as Bristol.