Heavy downpours, lightning and hail to affect counties across the South East this Saturday

Slug: south-east-weather-warning-thunderstorms-met-office-june-2025
Keyword Phrase: South East weather warning thunderstorms

The South East of England is set to be lashed by heavy showers and thunderstorms on Saturday, June 7, with the Met Office issuing a yellow weather warning for much of the region.

The alert, which runs from 9am to 6pm, warns of intense rainfall, frequent lightning strikes, and the possibility of hail and flash flooding across affected counties.

Storm Risk Across the Region

Areas covered by the warning include:

• Kent

• East Sussex

• West Sussex

• Surrey

• Hampshire

• Berkshire

• Buckinghamshire

• Oxfordshire

Forecasters warn that 10 to 15mm of rain could fall within an hour, with some locations experiencing up to 40mm throughout the day.

Public Urged to Prepare

The Met Office advises residents and travellers to:

• Monitor travel conditions

• Prepare for power cuts

• Avoid sheltering near trees or tall structures

• Have an emergency kit with torches, chargers, and essentials

“Frequent lightning, hail and strong, gusty winds will be additional hazards,” a spokesperson said.

Travel Disruption Expected

Those planning to travel by road or rail are encouraged to check live updates and expect delays or cancellations, especially in low-lying or rural areas prone to flooding.

 Rainfall in Context

To put the warning in perspective:
The average rainfall for the entire month of June in the South East is around 50–55mm. Some areas could receive up to 75% of that in a single day.

 Flash Flood Risk Areas

Communities in coastal towns, river valleys, and urban centres with poor drainage are at highest risk of localised surface flooding.

Stay Updated

For live weather alerts and safety advice, visit the Met Office’s official website.