At the peak of the June heatwave, the warmest June on record in England, all Tavia Watts could think about was how hot it was in her two- and five-year-old's bedroom - above 30C in some cases.
"During the heatwave, I've got a high level of anxiety all the time and I'm pretty much useless," she told the BBC. "I've had to leave bedtime when my husband reads [my kids] stories to have a little cry and to calm down, because it's just too hot in their room and I'm afraid for them."
Feeling "incredibly helpless", the 36-year-old posted a short reel to her hundreds of followers on Instagram, in which she voiced her inner anxieties. To her surprise, it got more than 18,000 likes and 1,700 reposts.
In the video Tavia, a stay-at-home mum living in Cheltenham, says the heat "feels like the world is literally ending", she's "terrified for [her] children's lives", and that she "wants to scream at the people not taking this seriously".
Watts is not alone. A 2022 study from the University of Bath estimates that about 4.6% of people in the UK have climate anxiety, which is recognised as a form of mental distress by professional bodies and the NHS. Young people and women are among the groups most at risk, according to a study published in 2025.
"Anticipatory anxiety", related to heatwaves in particular, has become more common, say psychologists Dr Caroline Hickman from the University of Bath and Dr Emma Lawrance from the University of Oxford.
"Once people have been through a traumatic event like a flood or a heatwave, they anticipate the next one," Hickman, who offers therapy to individuals experiencing climate anxiety, told the BBC.
In the UK, "now we're getting the repeat, repeat, repeat [heatwaves]. It triggers that sense that 'I can't be safe in the world, and the world can't be trusted'," she added.
In June's heatwave, Hickman said she "had people saying they're going to kill themselves, I've had people saying they're going to terminate pregnancies, I've had people saying that they want to sell their houses and move somewhere cooler".
Watts said that her video "clearly struck a chord with people" - including therapists posting comments about coping mechanisms - and that she wanted to help others deal with climate anxiety.
"It can go one of two ways. You can either just fall into doomism and think, 'What is the point?'" she said.
"Or you can try to do something. I sign petitions during a heatwave; I organise climate community events; I run a free children's clothes swap shop. During the last heatwave, I finally became vegetarian, because then I can tell my kids at least I tried."
Lawrance had some recommendations on how to cope with climate anxiety:
Talk to others: There's often "a huge perception gap between how concerned people are about climate change, and how much they think other people care", said Lawrance - meaning you might wrongly assume that you're in the minority, or even that you're alone.
"Make space to be kind to yourself, to tend to those emotions and know that it's coming from a place of care for the world," she added.
Find a community: Lawrance recommended finding a strong social network who care about the same things, and taking positive action together.
Whether it's planting a garden in your school or putting solar panels on the roof of your business, action can not only help you channel your anxiety into something positive, but can help alleviate the symptoms of anxiety too.
Lawrance cited the Climate Psychology Alliance in the UK for further support, as well as groups like the Resilience Project, the Climate Cares Centre, and the Climate Majority Project.
Keep yourself cool: Your physical health also affects your mental health, and being hot can also make your anxiety and mood worse, Lawrance said - so she recommended making sure to keep yourself physically cool in extreme heat.
"Having a cool shower, putting a cold washer on your neck, making sure you're hydrated - all of those things will help physiologically as well," she said. "There's a lot we can do - we're not powerless."
