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    Caution needed - Extreme heat takes hold

08:22
26 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

Fr
23
35
Sa
22
33
Su
20
26
Mo
15
24
Tu
17
26
We
18
25
Th
17
25
Fr
17
27
Sa
17
27
Su
17
25
Mo
16
27
Tu
18
28
We
17
26
Th
17
29
Max (°C)
Min (°C)
moreless

Manchester

Fr
21
32
Sa
17
28
Su
17
20
Mo
13
21
Tu
14
21
We
14
21
Th
15
21
Fr
12
20
Sa
13
20
Su
13
20
Mo
12
21
Tu
15
22
We
14
21
Th
13
22
Max (°C)
Min (°C)
moreless

Dublin

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

Edinburgh

Fr
15
17
Sa
14
24
Su
17
19
Mo
12
18
Tu
13
18
We
13
17
Th
14
21
Fr
12
20
Sa
13
19
Su
11
18
Mo
11
19
Tu
13
19
We
12
20
Th
11
20
Max (°C)
Min (°C)
moreless

Cardiff

Fr
22
26
Sa
17
28
Su
17
21
Mo
13
21
Tu
14
22
We
13
20
Th
16
22
Fr
13
21
Sa
15
21
Su
15
21
Mo
13
22
Tu
16
22
We
15
22
Th
14
22
Max (°C)
Min (°C)
moreless
Weather & Radar editorial team
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