Climate Change Is Now a Skin Cancer Driver: Longer UV Seasons, Slow Ozone Recovery
A 2025 review shows warming isn't just longer beach days—it lengthens UV seasons and pushes melanoma rates higher in places that were never sun-prepared.
A 2025 review in Frontiers in Public Health reported a Scandinavian longitudinal study with a greater than 4% annual increase in melanoma incidence over two decades, correlating with prolonged summer seasons and more frequent heatwaves; the review also notes ozone-layer recovery is not expected before about 2060.
Researchers writing in Frontiers in Public Health argue that climate-driven changes—longer warm seasons, more heatwaves and a still-recovering ozone layer—are best understood as amplifiers of UV damage, making consistent, year-round photoprotection more important rather than a summers-only habit.
Questions we get a lot
How does climate change actually increase skin cancer risk?
According to a 2025 review in Frontiers in Public Health, warming temperatures lengthen the UV-intense season and bring more frequent heatwaves, increasing cumulative UV exposure. The review also notes that the ozone layer is still recovering and is not expected to fully rebound before around 2060. Together these factors keep ground-level UV elevated and extend the window in which sun exposure can cause damage.
Is melanoma incidence really rising?
The 2025 review highlights a Scandinavian longitudinal study showing melanoma incidence rising more than 4% per year over two decades, correlating with prolonged summers and more frequent heatwaves. That kind of sustained annual increase is significant over time. The authors frame it as evidence that climate factors are amplifying UV-related skin cancer risk.
When will the ozone layer recover?
The Frontiers in Public Health review notes that ozone-layer recovery is not expected before roughly 2060. Until then, the protective ozone that filters incoming UV remains thinner than its historical baseline in many regions. That is one reason daily photoprotection matters even outside peak summer.
r/SkincareAddiction: 'I live in a cold northern country—do I really need sunscreen now that summers are getting longer and hotter?'