Forecasters are predicting higher temperatures this week in London, so remember to pack your sun cream if you're heading out.

A yellow heat health alert has been issued for London and most of England, as temperatures look likely to soar to 30C in parts of the country.

The alert from the UK Health Security Agency (UKHSA) and Met Office will come into force from this morning (Monday) and remain in place until Thursday afternoon.

The UKHSA has warned of an “increase in risk of mortality amongst vulnerable individuals and increased potential for indoor environments to become very warm” for the north-west and north-east of England, the west of England, the South West and London.

Here is the hour-by-hour forecast for today (Monday)

5am - Cloudy 19°C

6am - Sunny intervals 19°C

7am - Sunny intervals 19°C

8am - Sunny intervals 20°C

9am - Sunny intervals 20°C

10am - Sunny 22°C

11am - Sunny intervals 22°C

12pm - Sunny intervals 23°C

1pm - Cloudy 24°C

2pm - Sunny intervals 25°C

3pm - Sunny intervals 26°C

4pm - Cloudy 26°C

5pm - Sunny intervals 26°C

6pm - Sunny intervals 26°C

7pm - Sunny 26°C

8pm - Sunny 25°C

9pm - Sunny 24°C

10pm - Clear 23°C

11pm - Clear 22°C

Here is the hour-by-hour forecast for tomorrow (Tuesday)

7am - Sunny 18°C

10am - Sunny 22°C

1pm - Sunny intervals 25°C

4pm - Sunny intervals 27°C

7pm - Sunny intervals 26°C

10pm- Sunny intervals 23°C

Forecast in full


Areas of cloud will persist, especially across northern locations, but also long sunny spells will occur, these most likely across the south. Very warm and humid. Light sea-breezes will develop. Maximum temperature 27 °C.

Outlook for Tuesday to Thursday:

Becoming hot and humid with varying, often large, amounts of cloud, but also bright or sunny spells. Currently dry conditions look like prevailing, but heavy showers may develop Wednesday onwards.

Liam Esslick, a meteorologist at the Met Office, said: “According to the latest models, there is a chance temperatures could reach 30C. It’s not guaranteed but this will likely be towards the south-east of England, particularly London, Essex and Kent.

“My advice to people would be by all means go out and enjoy. They have been waiting for summer.

“But UV levels are going to be high and the sun will be very intense. Wear protection like sun cream, stay hydrated and try to get some shade in the midday sun.

“People sensitive to the sun should take particular precautions."