An amber weather warning of "extreme heat" has been extended for a further day.
The warning will now be in force from midnight on Sunday, July 17 until 11.59 pm on Monday, July 18 for Bournemouth, Christchurch, Poole and the rest of Dorset.
A Met Office spokesperson said: "Temperatures will rise again later this week and over the coming weekend, likely peaking on Sunday and Monday, but may last into Tuesday in places.
Read more: 'Extremely rare red weather warning could be issued if forecast doesn't change'
"Some exceptionally high temperatures are possible and cumulative effects of warm nights and hot days are expected to bring widespread impacts to people and infrastructure."
On Monday BCP Council said it would not be activating a Severe Weather Emergency Protocol (SWEP) for the homeless.
Read more: 8 signs your dog is experiencing heatstroke amid UK heatwave, from the experts
The high temperatures are expected to continue for the remainder of the week. According to some forecasts, Dorset may experience temperatures as high as 35C.
Bournemouth and Poole Weather said: "If the current forecast does not change I would expect that Amber warning to become an extremely rare red warning, however, that likely wouldn't be issued until Saturday at the earliest."
Read more: How to keep your home cool as UK heatwave sparks Met Office weather warning
What to expect
Population-wide adverse health effects are likely to be experienced, not limited to those most vulnerable to extreme heat, leading to potential serious illness or danger to life. Government advice is that 999 services should be used in emergencies only; seek advice from 111 if you need non-emergency health advice.
Substantial changes in working practices and daily routines likely to be required
Significantly more people are likely to visit coastal areas, lakes and rivers leading to increased risk of water safety incidents
Delays on roads and road closures are possible, along with delays and cancellations to rail and air travel, with potential for significant welfare issues for those who experience even moderate delays
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