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.
Expect mild to warm days in Southampton this June, with average highs around 19°C and occasional rain. Pack a light jacket and an umbrella, as south-coast weather can shift quickly between sunshine and showers.
What is the typical June weather in Southampton?
Southampton’s June climate is defined by long daylight hours and moderate temperatures. Mean daily highs reach 19–20°C, while nights drop to about 12°C. Rainfall averages 50–60mm across the month, spread over 10–12 wet days. Sunshine totals roughly 200 hours, making it one of the sunnier months along the Solent coast.
Will there be heatwaves or unsettled spells?
June 2026 in the UK may see brief hot spells, but persistent heatwaves are rare on the south coast. Low-pressure systems from the Atlantic can bring a few cooler, rainy days, especially early in the month. Keep an eye on the 10-day forecast for any sudden shifts.
What should I pack for June weather in London and the south coast?
Light layers, a waterproof jacket and comfortable walking shoes. Even warm afternoons can turn breezy near the coast. Sunscreen is useful if you plan to be outdoors for long periods.
Is June 2026 expected to be hotter than average?
Early Met Office long-range signals suggest near-normal temperatures for southern England, though brief warm interludes are possible. Check local forecasts closer to the date for updates.
Where can I find the June weather forecast for Edinburgh or Manchester?
For other UK cities, visit our UK weather hub. Edinburgh and Manchester typically run several degrees cooler than Southampton, with more cloud and rain in the north.