We have rounded up an hour-by-hour weather forecast for London as the Met Office has issued yellow weather warnings for rain.

A yellow weather warning has been issued across all of London along with southern parts of England for rain, and is in place from 12pm today until 3am tomorrow (January 5).

Today a spell of rain is predicted to move northeast across southern and eastern parts of England.

In London the weather is predicted to begin sunny, turning cloudy towards lunchtime, with the chance for rain in the afternoon turning heavier.

The Met Office has advised that it is “uncertain” where the heaviest rainfall will be.

Rainfall of 20mm and 30mm could be seen across a large portion of areas under the yellow warning within a 6-9 hour period.

The Met Office has warned that a further spell of rain falling on saturated ground, after Storm Henk brought wind and heavy rainfall to London, could lead to potential risks of flooding.  

Here’s the hour-by-hour forecast for today (January 4)

6am - Clear

7am - Partly cloudy

8am - Partly cloudy

9am - Sunny intervals

10am - Sunny

11am - Cloudy

12pm - Cloudy

1pm - Cloudy

2pm - Cloudy

3pm - Light rain

4pm - Heavy rain

5pm - Heavy rain

6pm - Heavy rain

7pm - Heavy rain

8pm - Heavy rain

9pm - Heavy rain

10pm - Light rain

11pm - Heavy rain

The forecast in full:

After a sunny start it will turn cloudy for most with some rain for the afternoon, this possibly heavy at times.

Perhaps windy with the rain, especially near the coast.

Maximum temperature 8 °C.

The current forecast for Friday (January 5)

12am - Light rain

3am - Light rain

6am - Cloudy

9am - Cloudy

12pm - Overcast

3pm - Cloudy

6pm - Overcast

9pm - Overcast

The forecast for Friday and over the weekend

Mix of isolated showers and brighter spells on Friday. Mostly dry and cloudy over the weekend, turning colder, perhaps isolated eastern coastal showers with light winds.

What to expect?

Met Office has warned that today’s weather could lead to possible risks of power cuts in homes and businesses.

There are also warnings that some homes and businesses could potentially be flooded, with advice being issued to check properties for risks of flooding.

Today’s rainfall may also lead to difficult driving and travelling conditions, with a chance of delays on travel services and potential road closures.