The weather is estimated to be hotter than Ibiza, which is forecast to have highs of 30C.
The UK Health Security Agency (UKHSA) have issued an amber heat-health alert (HHA) for all regions of England, including London, which will end on July 1.
Sunny conditions will last for the whole of Monday and Tuesday (June 30 and July 1).
The Met Office reported that Thursday, June 19, was the hottest day of 2025 so far, with temperatures reaching 32.2°C in Kew and Heathrow.
However, this week is expected to surpass that record.
Here’s the hour-by-hour forecast for Monday (June 29):
5am – Sunny, 20C
6am – Sunny, 20C
7am – Sunny, 20C
8am – Sunny, 22C
9am – Sunny, 24C
10am – Sunny, 26C
11am – Sunny, 28C
12pm – Sunny, 29C
1pm – Sunny, 31C
2pm – Sunny, 32C
3pm – Sunny, 33C
4pm – Sunny, 33C
5pm – Sunny, 33C
6pm – Sunny, 33C
7pm – Sunny, 32C
8pm – Sunny, 31C
9pm – Clear night, 30C
10pm – Clear night, 28C
Tuesday (July 1):
7am – Sunny, 22C
10am – Sunny, 26C
1pm – Sunny, 30C
4pm – Sunny, 33C
7pm – Sunny, 32C
10pm – Partly cloudy night, 25C
Full Met Report forecast:
Monday:
Largely dry and sunny.
Feeling hot or very hot and humid for inland areas, with light winds.
Some onshore sea-breezes developing, which will help to keep coastal areas slightly cooler.
Maximum temperature 34 °C.
Tuesday:
Largely dry and sunny, probably hot or very hot Tuesday. Small chance of isolated thunderstorms
