Thursday is expected to bring a cloudy and damp start, but conditions should improve through the morning with some brighter spells developing.
Temperatures will remain cool for mid-September, reaching around 18C during the afternoon, with a brisk westerly breeze at times.
Early morning starts unsettled, with showers likely around 6am and a 90% chance of rain. Temperatures are around 13C, feeling closer to 12C. The rain risk eases to 60% by 7am and drops to 20% by 8am, with temperatures rising slowly to 14C. Winds are mainly south-westerly to west-south-westerly at around 7mph, with gusts around 22mph to 23mph.
By mid-morning, conditions look drier and brighter. From 9am to 11am, the chance of rain falls below 5%, with sunny intervals and temperatures rising from 15C to 17C. Winds turn westerly and freshen slightly to around 8mph to 9mph, with gusts increasing to 25mph to 29mph.
Around midday and into the early afternoon, it stays mostly bright with some cloud. Temperatures reach 17C to 18C between midday and 2pm, with only a low chance of rain. Westerly winds remain steady at around 9mph, with gusts close to 30mph. Visibility is generally very good, though it may reduce to excellent in places during the afternoon. UV levels peak at 4 around late morning and lunchtime.
During the afternoon, temperatures hold at around 18C, with some cloud and sunny spells. The chance of rain is around 10% at 2pm and 3pm, rising slightly to 20% by 4pm. Winds remain westerly at around 9mph, with gusts close to 29mph to 30mph.
By evening, temperatures gradually fall from 17C at 5pm to 13C by 10pm and 11pm. There is a 30% chance of rain around 5pm and 6pm, easing to 10% through the early evening and below 5% later. Winds ease slightly, turning west-south-westerly later in the evening, with speeds around 6mph to 8mph and gusts falling from 28mph to around 17mph by late evening.
