Your skin usually burns and sometimes tans in the sun.
When the sun is strongest (between 11am - 3pm in Northern Ireland) seek the shade and cover up with a T-shirt, hat and sunglasses.
During the summer locally, wear sunscreen with SPF 15-25 and 4 or 5 star rating. On sunny holidays wear sunscreen with SPF 30-50 and 4 or 5 star rating. Apply sunscreen 30 minutes before going out in the sun and reapply every 2 hours.