The Science of Sunburn: Why 21°C Can Still Hurt

Many golfers mistakenly believe that if the temperature feels comfortable, sunburn isn’t a risk. The truth is different.

• UV radiation, not heat: Sunburn is caused by ultraviolet rays damaging skin cells. Temperature plays no role in this process.

• Winter risk: In destinations like the Canary Islands or Morocco, the UV index can be high even when it feels cool.

• Reflection matters: Golf courses, with their sand bunkers and water hazards, often reflect UV rays, increasing exposure.

According to Cancer Research UK, sun protection is essential whenever the UV index is 3 or above. Many of the destinations listed here regularly exceed this in winter. For golfers, who spend four to five hours outdoors per round, the risk is significant.