A WEATHER warning is in place for extreme heat across Gwent and many parts of the UK.

The amber warning for extreme heat is the first of its kind for the Met Office to issue and runs from 4.05pm today (July 19) to 11.59pm on Thursday, July 22.

The whole of Gwent is included along with south and mid-Wales, Devon, Hampshire and the West Midlands. The warning comes after the increasing heatwave over the weekend is set to continue, with temperatures of around 28 degrees, reaching 30 degrees in Monmouth.

Here is the Met Office’s hour-by-hour forecast for the period of the weather warning.

Newport

Monday July 19

  • 5pm: sunny, 29 degrees
  • 6pm: sunny, 29 degrees
  • 7pm: sunny, 28 degrees
  • 8pm: sunny, 27 degrees
  • 9pm: sunny, 25 degrees
  • 10pm: clear, 24 degrees
  • 11pm: clear, 23 degrees
  • Midnight: clear, 22 degrees

Tuesday July 20:

  • 1am: clear, 22 degrees
  • 2am: clear, 21 degrees
  • 3am: clear, 20 degrees
  • 4am: clear, 19 degrees
  • 5am: clear, 19 degrees
  • 6am: sunny, 19 degrees
  • 7am: sunny, 19 degrees
  • 8am: sunny, 21 degrees
  • 9am: sunny, 22 degrees
  • 10am: sunny, 24 degrees
  • 11am: sunny, 25 degrees
  • Midday: sunny, 26 degrees
  • 1pm: sunny, 27 degrees
  • 2pm: sunny, 27 degrees
  • 3pm: sunny, 28 degrees
  • 4pm: sunny, 28 degrees
  • 5pm: sunny, 28 degrees
  • 6pm: sunny, 28 degrees
  • 7pm: sunny, 27 degrees
  • 8pm: sunny, 26 degrees
  • 9pm: sunny, 25 degrees
  • 10pm: clear, 24 degrees
  • 11pm: clear, 23 degrees
  • Midnight: clear, 22 degrees

Wednesday July 21

  • 1am: clear, 21 degrees
  • 4am: clear, 19 degrees
  • 7am: sunny, 19 degrees
  • 10am: sunny, 23 degrees
  • 1pm: sunny, 27 degrees
  • 4pm: sunny, 27 degrees
  • 7pm: sunny, 27 degrees
  • 10pm: clear, 23 degrees

Thursday July 22

  • 1am: clear, 21 degrees
  • 4am: clear, 19 degrees
  • 7am: sunny, 19 degrees
  • 10am: sunny, 22 degrees
  • 1pm: sunny intervals, 25 degrees
  • 4pm: sunny intervals, 26 degrees
  • 7pm: sunny intervals, 25 degrees
  • 10pm: clear, 22 degrees

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Cwmbran

Monday July 19

  • 5pm: thunder shower, 30 degrees
  • 6pm: sunny, 29 degrees
  • 7pm: sunny, 29 degrees
  • 8pm: sunny, 27 degrees
  • 9pm: sunny, 26 degrees
  • 10pm: clear, 25 degrees
  • 11pm: clear, 24 degrees
  • Midnight: clear, 23 degrees

Tuesday July 20:

  • 1am: clear, 21 degrees
  • 2am: clear, 20 degrees
  • 3am: clear, 19 degrees
  • 4am: clear, 18 degrees
  • 5am: clear, 18 degrees
  • 6am: sunny, 18 degrees
  • 7am: sunny, 20 degrees
  • 8am: sunny, 21 degrees
  • 9am: sunny, 22 degrees
  • 10am: sunny, 24 degrees
  • 11am: sunny, 26 degrees
  • Midday: sunny, 27 degrees
  • 1pm: sunny, 28 degrees
  • 2pm: sunny, 29 degrees
  • 3pm: sunny, 29 degrees
  • 4pm: sunny, 29 degrees
  • 5pm: sunny, 29 degrees
  • 6pm: sunny, 28 degrees
  • 7pm: sunny, 28 degrees
  • 8pm: sunny, 26 degrees
  • 9pm: sunny, 25 degrees
  • 10pm: clear, 24 degrees
  • 11pm: clear, 23 degrees
  • Midnight: clear, 22 degrees

Wednesday July 21

  • 1am: clear, 21 degrees
  • 4am: clear, 18 degrees
  • 7am: sunny, 19 degrees
  • 10am: sunny, 24 degrees
  • 1pm: sunny, 28 degrees
  • 4pm: sunny, 29 degrees
  • 7pm: sunny, 28 degrees
  • 10pm: clear, 23 degrees

Thursday July 22

  • 1am: clear, 20 degrees
  • 4am: clear, 18 degrees
  • 7am: sunny, 19 degrees
  • 10am: sunny, 23 degrees
  • 1pm: sunny, 26 degrees
  • 4pm: sunny intervals, 27 degrees
  • 7pm: sunny, 26 degrees
  • 10pm: clear, 22 degrees

Caerphilly

Monday July 19

  • 5pm: sunny, 29 degrees
  • 6pm: sunny, 28 degrees
  • 7pm: sunny, 27 degrees
  • 8pm: sunny, 26 degrees
  • 9pm: sunny, 24 degrees
  • 10pm: clear, 23 degrees
  • 11pm: clear, 22 degrees
  • Midnight: clear, 21 degrees

Tuesday July 20:

  • 1am: clear, 20 degrees
  • 2am: clear, 19 degrees
  • 3am: clear, 19 degrees
  • 4am: clear, 18 degrees
  • 5am: clear, 18 degrees
  • 6am: sunny, 18 degrees
  • 7am: sunny, 20 degrees
  • 8am: sunny, 21 degrees
  • 9am: sunny, 23 degrees
  • 10am: sunny, 24 degrees
  • 11am: sunny, 25 degrees
  • Midday: sunny, 26 degrees
  • 1pm: sunny, 27 degrees
  • 2pm: sunny, 28 degrees
  • 3pm: sunny, 28 degrees
  • 4pm: sunny, 28 degrees
  • 5pm: sunny, 28 degrees
  • 6pm: sunny, 27 degrees
  • 7pm: sunny, 26 degrees
  • 8pm: sunny, 25 degrees
  • 9pm: sunny, 23 degrees
  • 10pm: clear, 22 degrees
  • 11pm: clear, 21 degrees
  • Midnight: clear, 20 degrees

Wednesday July 21

  • 1am: clear, 20 degrees
  • 4am: clear, 18 degrees
  • 7am: sunny, 19 degrees
  • 10am: sunny, 24 degrees
  • 1pm: sunny, 27 degrees
  • 4pm: sunny, 28 degrees
  • 7pm: sunny, 26 degrees
  • 10pm: clear, 22 degrees

Thursday July 22

  • 1am: clear, 20 degrees
  • 4am: clear, 18 degrees
  • 7am: sunny, 19 degrees
  • 10am: sunny, 23 degrees
  • 1pm: sunny intervals, 26 degrees
  • 4pm: sunny intervals, 27 degrees
  • 7pm: sunny intervals, 26 degrees
  • 10pm: clear, 22 degrees

Ebbw Vale

Monday July 19

  • 5pm: sunny intervals, 27 degrees
  • 6pm: sunny, 27 degrees
  • 7pm: sunny, 26 degrees
  • 8pm: sunny, 25 degrees
  • 9pm: sunny, 23 degrees
  • 10pm: clear, 22 degrees
  • 11pm: clear, 20 degrees
  • Midnight: clear, 19 degrees

Tuesday July 20:

  • 1am: clear, 19 degrees
  • 2am: clear, 18 degrees
  • 3am: clear, 17 degrees
  • 4am: clear, 17 degrees
  • 5am: clear, 17 degrees
  • 6am: sunny, 17 degrees
  • 7am: sunny, 19 degrees
  • 8am: sunny, 20 degrees
  • 9am: sunny, 22 degrees
  • 10am: sunny, 24 degrees
  • 11am: sunny, 25 degrees
  • Midday: sunny, 25 degrees
  • 1pm: sunny, 26 degrees
  • 2pm: sunny, 27 degrees
  • 3pm: sunny intervals, 27 degrees
  • 4pm: sunny intervals, 27 degrees
  • 5pm: sunny, 27 degrees
  • 6pm: sunny, 26 degrees
  • 7pm: sunny, 25 degrees
  • 8pm: sunny, 24 degrees
  • 9pm: sunny, 22 degrees
  • 10pm: clear, 21 degrees
  • 11pm: clear, 20 degrees
  • Midnight: clear, 19 degrees

Wednesday July 21

  • 1am: clear, 18 degrees
  • 4am: clear, 17 degrees
  • 7am: sunny, 18 degrees
  • 10am: sunny, 22 degrees
  • 1pm: sunny, 25 degrees
  • 4pm: sunny, 27 degrees
  • 7pm: sunny, 25 degrees
  • 10pm: clear, 20 degrees

Thursday July 22

  • 1am: clear, 17 degrees
  • 4am: clear, 15 degrees
  • 7am: sunny, 17 degrees
  • 10am: sunny, 21 degrees
  • 1pm: sunny intervals, 24 degrees
  • 4pm: sunny intervals, 25 degrees
  • 7pm: sunny intervals, 24 degrees
  • 10pm: clear, 19 degrees

Monmouth

Monday July 19

  • 5pm: sunny, 31 degrees
  • 6pm: sunny, 30 degrees
  • 7pm: sunny, 29 degrees
  • 8pm: sunny, 28 degrees
  • 9pm: sunny, 25 degrees
  • 10pm: clear, 23 degrees
  • 11pm: clear, 22 degrees
  • Midnight: clear, 20 degrees

Tuesday July 20:

  • 1am: clear, 19 degrees
  • 2am: clear, 18 degrees
  • 3am: clear, 17 degrees
  • 4am: clear, 17 degrees
  • 5am: clear, 16 degrees
  • 6am: sunny, 17 degrees
  • 7am: sunny, 19 degrees
  • 8am: sunny, 21 degrees
  • 9am: sunny, 23 degrees
  • 10am: sunny, 25 degrees
  • 11am: sunny, 27 degrees
  • Midday: sunny, 29 degrees
  • 1pm: sunny, 29 degrees
  • 2pm: sunny, 30 degrees
  • 3pm: sunny intervals, 29 degrees
  • 4pm: sunny intervals, 30 degrees
  • 5pm: sunny intervals, 30 degrees
  • 6pm: sunny, 29 degrees
  • 7pm: sunny, 29 degrees
  • 8pm: sunny, 27 degrees
  • 9pm: sunny, 25 degrees
  • 10pm: clear, 23 degrees
  • 11pm: clear, 22 degrees
  • Midnight: clear, 20 degrees

Wednesday July 21

  • 1am: clear, 19 degrees
  • 4am: clear, 17 degrees
  • 7am: sunny, 19 degrees
  • 10am: sunny, 24 degrees
  • 1pm: sunny, 28 degrees
  • 4pm: sunny, 29 degrees
  • 7pm: sunny, 28 degrees
  • 10pm: clear, 22 degrees

Thursday July 22

  • 1am: clear, 19 degrees
  • 4am: clear, 17 degrees
  • 7am: sunny, 19 degrees
  • 10am: sunny, 23 degrees
  • 1pm: sunny intervals, 26 degrees
  • 4pm: sunny intervals, 27 degrees
  • 7pm: sunny intervals, 26 degrees
  • 10pm: clear, 22 degrees