Hour-by-hour weather forecast as heatwave set to continue in Portsmouth

THE heatwave is set to continue in Portsmouth this weekend.

A level three alert is in place until Sunday, after the Met Office issued it earlier in the week.

Sisters, Sophie 15 and Christina Elms 13 paddle boarding in the sea in Southsea. Picture: Habibur Rahmanplaceholder image
Sisters, Sophie 15 and Christina Elms 13 paddle boarding in the sea in Southsea. Picture: Habibur Rahman

Today is set to be the hottest day with temperatures expected to exceed 30C in parts of the region.

placeholder image
Read More
21 photos of people making most of heatwave in Portsmouth area

Here is the hour-by-hour forecast for Portsmouth:

Saturday

7am – Sunny intervals – 23C

8am – Sunny intervals – 23C

9am – Cloudy – 25C

10am – Sunny – 26C

11am – Sunny intervals – 27C

Noon – Sunny intervals – 28C

1pm – Sunny intervals – 28C

2pm – Cloudy – 28C

3pm – Sunny intervals – 28C

4pm – Sunny – 28C

5pm – Sunny intervals – 28C

6pm – Sunny – 28C

7pm – Sunny – 27C

8pm – Sunny – 27C

9pm – Clear night – 27C

10pm – Clear night – 25C

11pm – Clear night – 24C

A message from the Editor, Mark Waldron

Thank you for reading this story. The dramatic events of 2020 are having a major impact on our advertisers and thus our revenues.

The News is more reliant than ever on you taking out a digital subscription to support our journalism. You can subscribe here for unlimited access to Portsmouth news and information online.Every subscription helps us continue providing trusted, local journalism and campaign on your behalf for our city.

Related topics:
News you can trust since 1877
Follow us
© 2026 Iconic Media Group Ltd. All rights reserved.Cookie SettingsTerms and ConditionsPrivacy notice