To prevent sunburn, stay out of the sun between 11 and 3pm, cover yourself up with a hat and long but light clothes, and apply sunscreen to exposed skin.
- How to Prevent a Sunburn @ WikiHow
Excerpt: Keep covered up. Floppy hats and large umbrellas work well but so do beach cover-ups and the like. Long-sleeved cotton shirts are excellent for hiking, cycling etc; see your sports store for special brands that allow breathing as well as cover-up.
- Sunburn @ NHS Choices
Excerpt: Avoid strong sunlight whenever possible, particularly when the sun is strongest, and cover up with loose clothing and a hat.