UK Warned to Keep Windows Shut as False Widow Spider Season Peaks

UK residents are being urged to keep their windows closed this August as the venomous False Widow spider enters its peak mating season. Often referred

to as Britain’s most dangerous native spider, the species becomes highly active in late summer, with males venturing indoors in search of mates.

Dr. Tom Elwood, a spider expert, explains that while bites from False Widows aren’t deadly, they can be extremely painful—often likened to a wasp sting.

In more severe cases, the venom can cause swelling, burning pain, and even fever. Several UK medical reports have confirmed such reactions, raising public concern.

False Widows are increasingly common in homes, especially in warm, sheltered areas like sheds

, attics, and window frames. Their sticky, tangled webs often appear in corners and crevices.

To reduce the risk of indoor encounters, experts advise keeping windows shut around the clock throughout August—the spider’s most active period.

Additional tips include regularly cleaning window frames, removing webs, and sealing any cracks or gaps around vents, doors, and pipes.

While not life-threatening, False Widow bites are best avoided. Awareness and simple precautions

can help prevent painful run-ins during the height of their breeding season.