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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 ·
Southampton’s weather is mild and maritime, with cool winters and warm summers rarely reaching extremes. The live forecast above shows the immediate outlook; for planning, spring (April–June) and early autumn (September–October) offer the most reliable dry spells and comfortable temperatures for a city break or cruise departure.
What is the best time to visit Southampton?
May to September gives you the best chance of pleasant weather, with average highs from 16°C to 22°C. July and August are the warmest months but also the busiest for school holidays and cruise traffic. For quieter visits with still-decent conditions, aim for late May or early September. Winters are damp but rarely below freezing, so a coat and waterproof shoes are needed from November to March.
What should you pack for a visit?
Layers are the key—Southampton’s coastal location means conditions can shift quickly. A light waterproof jacket is useful even in summer. For a weather in southampton tomorrow check, bring a mid-layer; for a longer trip, include a warm fleece or jumper for cooler evenings. Comfortable, water-resistant footwear is wise if you plan to walk the waterfront or Old Town.
If you are checking the weather in southampton 10 days out, expect the forecast to be reasonably reliable for trends but less so for exact timings. For longer-range planning—such as a 14 day weather forecast southampton or a 21 day weather forecast southampton—treat the details as general guidance rather than a fixed schedule. A southampton weather forecast 15 days ahead is useful for packing categories (summer vs autumn gear) but not for day-to-day plans. For a full picture of southampton weather by month, the Met Office long-term averages are your best bet.
Does Southampton get a lot of rain?
Yes, it’s one of the wetter southern cities, with rain spread fairly evenly across the year. November tends to be the wettest month, but even summer sees occasional showers. A compact umbrella is recommended year-round.
Is Southampton often foggy?
Fog is common in autumn and winter, especially near the waterfront and the Solent. It usually clears by mid-morning but can delay ferry and cruise departures. Check the live forecast above for visibility warnings.
How windy is Southampton?
Being a port city, it can be breezy, particularly from October to February. Winds are rarely severe enough to disrupt travel, but exposed spots like the Itchen Bridge or Town Quay will feel noticeably gustier. A windproof jacket helps.
Sources
For more UK travel planning, see the UK weather hub, check Bristol Weather, or browse the 10 Day Weather Forecast UK.