Temperatures are expected to drop closer to the average for this time of year through the rest of next week with occasional spells of rain. But there is good news on the horizon.
Online forecasters Northern Ireland Weather say today will start with fog and mist in some areas, but this will clear to become a very hot day with temperatures of up to 30C , although it will be cooler on the coast.
They say the rest of the week will stay warm with plenty of sunshine.
People have been flocking to the beaches. Crawfordsburn beach had to be closed on Monday and Tuesday afternoon because of the sheer numbers.
However, warden Dougie McOwat said the numbers have been manageable and there was a good atmosphere.
Earlier this week Portstewart Strand attracted around 1,500 people a day, but numbers were down to about 800 yesterday as a sea haze obscured the sunshine.
North Down Borough Council has sent out extra litter pickers and installed extra bins on Groomsport and Ballyholme after high numbers of visitors on Monday generated large amounts of litter.
"Environmental wardens are keeping an eye on any anti-social behaviour on the beaches and we are also working with the PSNI to make sure alcohol bylaws are enforced on Helen's Bay and Crawfordsburn Country Park."
The council is also highlighting free events at Cockle Row in Groomsport and Ward Park in Bangor over the weekend.