Flying ants were picked up as rain on radars (Image: GETTY)
The groups of the flying insects were so large they appeared on weather forecast maps looking like rain. Simon King, a BBC meteorologist said the ants were large enough and flying at such a certain height they were picked up by radar systems. Mr King explained: "We knew it was dry in the south of England, and yet the radar was showing this very light precipitation across the south.
"You can tell it's not rainfall because it has that eerie look to it. It doesn't quite match what rainfall looks like.”
The swarms were spotted all across the southern coast from Hampshire to West Sussex.
Mr King said such sightings were far more common on the other side of the Atlantic Ocean and added: "For it to actually to appear on the radar imagery, that's something certainly incredible, and I just feel sorry for all the people who have to experience those flying ants."
A study found that flying ants fly somewhere in the UK on 96 percent of the days between the starts of June and September.