The Met Office has issued a yellow weather warning for today (Saturday) which covers the capital and much of the south east.
It warns of risk of hail, lightning strikes, and disruption to road and rail travel.
Showers are likely to become heavy and thundery at times, and may be accompanied by hail. Winds will also be gusty throughout the day.
The rain currently forecast overnight is expected to clear by early morning, but more unsettled weather will follow quickly behind.
From Sunday, conditions are expected to improve gradually.
The forecast suggests that much of the region will stay dry at the start of next week, with longer sunny spells and rising temperatures.
Here is the full breakdown:
Saturday, June 7
- Weather: Sunny intervals with heavy, blustery showers and thunderstorms
- Maximum temperature: 19°C
- Minimum temperature: 10°C
- Sunrise: 4.45am
- Sunset: 9.14pm
Overnight rain is forecast to clear by early morning. Heavy and blustery showers are then expected to develop from late morning and continue through the day, moving eastwards. Some of these showers may be thundery, with a risk of hail.
Sunday, June 8
- Weather: Mostly dry with sunny spells, isolated showers possible
- Maximum temperature: 19°C
- Minimum temperature: 12°C
Conditions are forecast to be more settled than Saturday, with dry periods and some sunny spells. There is still a chance of isolated showers.
Monday, June 9
- Weather: Mostly dry with sunny spells, chance of an isolated shower
- Maximum temperature: 22°C
- Minimum temperature: 13°C
Dry and bright conditions are expected for most areas. Occasional showers are possible but not widespread.
Tuesday, June 10
- Weather: Largely dry with sunny conditions, possible rain later
- Maximum temperature: 24°C
- Minimum temperature: 15°C
Tuesday is forecast to remain dry for much of the day with sunny weather. Further rain may be possible later.
Wednesday, June 11
- Weather: Sunny day
- Maximum temperature: 27°C
- Minimum temperature: 18°C
Clear and sunny conditions are expected throughout the day.
Thursday, June 12
- Weather: Sunny intervals
- Maximum temperature: 25°C
- Minimum temperature: 16°C
Thursday is forecast to remain warm with sunny intervals and no rain currently indicated.
