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    Caution needed - Extreme heat takes hold

11:06
25 June 2026

Caution needed
Extreme heat takes hold

Split temperature maps of the UK for Wednesday 24.06 and Thursday 25.06 showing intensifying heat across Britain, with temperatures rising from 38°C near London on Wednesday to 37°C on Thursday, and a central heat warning symbol highlighting widespread extreme warmth.
Heat builds during the week, possibly hitting 40 °C locally.

Extreme heat will grip the UK this week, with rare heat warnings in force in parts of the country.

Amber extreme heat warnings are in effect from Monday into Tuesday, before a red warning covers parts of central England into Wales. This becomes just the second ever red extreme heat warning following the first in the historic heatwave of July 2022.

Daily highs are expected to exceed 37 °C even in shaded areas, and rising to around 40 °C in places, threatening the all-time UK heat record of 40.3 °C. Increasing humidity will also make conditions more oppressive along with tropical nights for some.

In Ireland, yellow heat warnings are active from Tuesday, after a rather overcast Monday it is turning sunnier and hotter from Tuesday onwards.

Later in the week, Thursday could mark the peak of the heat. However, there is also potential for widespread thunderstorms across the north of England into Scotland.

Temperatures will dip again from Friday, but it will remain warm through the weekend.

London

Th
21
32
Fr
23
35
Sa
22
33
Su
21
25
Mo
15
24
Tu
16
24
We
17
25
Th
16
24
Fr
16
24
Sa
16
25
Su
16
25
Mo
16
26
Tu
18
27
We
16
25
Max (°C)
Min (°C)
moreless

Manchester

Th
18
32
Fr
22
30
Sa
16
29
Su
17
20
Mo
13
20
Tu
12
20
We
14
22
Th
12
20
Fr
13
20
Sa
11
19
Su
12
19
Mo
14
22
Tu
15
21
We
14
22
Max (°C)
Min (°C)
moreless

Dublin

Th
14
26
Fr
19
27
Sa
18
23
Su
16
19
Mo
11
19
Tu
15
20
We
14
21
Th
12
20
Fr
11
19
Sa
10
18
Su
11
19
Mo
12
20
Tu
13
20
We
12
20
Max (°C)
Min (°C)
moreless

Edinburgh

Th
13
21
Fr
16
19
Sa
16
24
Su
17
21
Mo
12
18
Tu
11
17
We
14
20
Th
12
19
Fr
11
19
Sa
10
18
Su
11
19
Mo
11
20
Tu
13
20
We
12
20
Max (°C)
Min (°C)
moreless

Cardiff

Th
24
35
Fr
22
25
Sa
17
28
Su
16
21
Mo
13
20
Tu
13
22
We
16
22
Th
14
20
Fr
14
21
Sa
13
21
Su
14
21
Mo
15
22
Tu
16
22
We
15
21
Max (°C)
Min (°C)
moreless
Weather & Radar editorial team
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