Southampton weather is set to turn wetter after nearly two months of dry conditions, with the Met Office forecasting several days of showers across the South East. Southern Water has already faced a hosepipe ban introduced on Friday, July 10, after weeks of dry weather left supplies under strain.
The dry spell has been long enough to matter on the ground: Southern Water said the driest spring in over a century and the warmest June on record put rivers under serious strain, and the ban affected around a million customers across Hampshire and the Isle of Wight. The last day Basingstoke recorded significant, widespread rainfall was June 22, a marker of how long the region has gone without meaningful relief.
Met Office forecast for Southampton
The Met Office outlook for Monday, August 17 described mostly dry conditions with spells of warm sunshine during the day, before rain was expected to move in overnight and could be heavy in places. For Southampton, that means the change is arriving in stages rather than all at once: the first showers were due to develop late, not in the daytime window people may have been watching.
Further showers were possible on Tuesday, August 18, when overnight rain was expected to clear southwards and leave drier, brighter conditions. By Wednesday, August 19, the chance of rain in Basingstoke was forecast to peak at around 70 per cent first thing in the morning, while Thursday, August 20 was forecast to be the wettest day with a 50 per cent chance of rain through much of the afternoon and evening.
Southern Water supply pressure
Southern Water introduced the hosepipe ban on Friday, July 10 to protect water supplies and the River Test. The company’s warning about the driest spring in over a century and the warmest June on record is the clearest sign that this forecast is more than a brief weather change; it follows a period in which rainfall has been too scarce, for too long, to ease pressure on the system.
For customers across Hampshire and the Isle of Wight, the practical question is not whether showers appear on a forecast map, but whether they arrive in enough volume to change conditions after July became one of the driest months on record. The Met Office’s sequence points to the first meaningful change overnight on Monday, August 17, with Southampton then moving into a wetter, more unsettled run through Thursday, August 20.
What remains most useful for readers is the timing: the city may see the first signs of change late on Monday, then more showery conditions through the middle of the week. The forecast gives Southampton a window for relief after the long dry spell, and the later days look more likely to deliver it than the warm, dry start.
