Sun safety in the Maldives: UV, heat and staying well

The islands run from about 7°N to just south of the equator, close to the line where the midday sun stands almost straight overhead. When the sun is high, its rays take a short path through the atmosphere and less ultraviolet (UV) light is filtered out.

A few local factors add to it:

• Reflection. The World Health Organization (WHO) notes that water and sand increase the UV you receive. In the Maldives you are surrounded by both, so even under a palm tree you still get reflected light.
• Cloud. WHO also points out that UV can stay high under cloud. A grey morning in the wet season can still burn you.
• Time in the water. Snorkelling, sandbank trips and boat transfers mean hours with your back and legs to the sky.

The UV index in plain words

The UV index is a scale used worldwide to show how quickly sun can damage skin. WHO advises sun protection from an index of 3 upwards, and suggests staying out of the midday sun at 8 and above. Around midday in the Maldives, readings in the 11+ “extreme” band are common on clear days through much of the year. UV peaks in the hours around solar noon, so the morning and late afternoon are the kindest times to be out.

There is no “low UV season” here. The dry season (January to March) has more clear days; the wet southwest monsoon (mid-May to November) has more cloud, but the sun is just as high. See the best time to visit the Maldives for how the seasons feel.

The best protection is shade and clothing, with sunscreen for the bits you cannot cover. WHO is clear that sunscreen should not be used to stretch out your time in the sun.

• Plan around the middle of the day. Do your walking, cycling and village visits early. Use the hours from about 11am to 3pm for lunch, a nap, a café or a shady spot.
• Cover up. Light, loose, long sleeves are cooler than you think and also suit local island dress norms. Our guide to what to wear in the Maldives covers what works on and off the bikini beach.
• Wear a hat with a brim that shades your ears and neck.
• Wear sunglasses that block close to 100% of UVA and UVB; WHO recommends wraparound styles.
• Use sunscreen well. The NHS suggests at least SPF 30 with a high UVA rating (four or five stars, or the UVA logo in a circle). Most people use far too little: an adult needs roughly 6 to 8 teaspoons to cover the whole body. Put it on before you go out and reapply about every two hours, and again after swimming or towelling, even if it says “water resistant”.
• Do not forget your feet, ears, scalp parting and lips (use an SPF lip balm).

The classic Maldives sunburn is a red back and the backs of the legs after a long snorkel. Face down in shallow water for an hour, you are fully exposed, and the sea washes sunscreen off.

• Wear a rash vest (a long-sleeved swim top). It is the single most useful thing you can pack.
• Choose shade on the boat. Most excursion boats have a covered area; sit under it on the way out and back.
• Sandbanks have no shade. Take a hat, a cover-up and water, and go early or late if you can.

More tips for time in the water are in our snorkelling in the Maldives guide.

You may hear that some sunscreen ingredients harm coral. The picture is mixed. Laboratory studies have linked certain chemical filters, such as oxybenzone, to stress in coral, and the US National Oceanic and Atmospheric Administration (NOAA) lists sunscreen chemicals among the pressures on reefs. How much it matters on real reefs, next to warming seas, is debated.

A sensible approach:

• Cover up first. A rash vest needs no sunscreen at all, so it is the most reef-friendly choice.
• Apply sunscreen well before you swim rather than just before you jump in.
• Consider mineral sunscreens (zinc oxide or titanium dioxide) if you want to avoid chemical filters, but treat “reef safe” labels with caution: the term is not regulated everywhere.
• Never stand on or touch coral, whatever sunscreen you use. That does far more harm.

Our guide to coral reefs of the Maldives explains why the reefs are under pressure and how visitors can help.

Air temperatures sit around 30–31°C all year, with high humidity, so heat builds up fast if you walk or exercise at midday.

Drink often

• Carry water and sip through the day. Thirst is a late signal.
• If you sweat heavily, oral rehydration salts from a pharmacy help replace what you lose.

Know the signs of heat exhaustion

The NHS lists tiredness, dizziness, headache, feeling sick, heavy sweating with pale clammy skin, cramps and intense thirst as signs of heat exhaustion. Move the person somewhere cool, loosen extra clothing, give water or a rehydration drink, and cool the skin with water and fanning. They should feel better within about 30 minutes.

Heatstroke is an emergency. Get help straight away if someone is confused, has a seizure, collapses, or has very hot skin and has stopped sweating despite being hot. In the Maldives, the national emergency number is 911, and the ambulance number is 102.

Children burn faster than adults, and WHO notes that sunburn in childhood raises the risk of skin cancer later in life.

• The NHS advises keeping babies under 6 months out of direct strong sunlight altogether. Use shade, a sun hat and light clothing.
• For older children, a full-length swimsuit or rash vest, a wide-brimmed hat and sunglasses work better than trying to keep re-coating a wriggling child with cream.
• Plan beach time early and late in the day, and build in a rest in the shade at midday.

More family advice is in the Maldives with kids guide.

If you do burn, get out of the sun and stay out of it while the skin recovers.

• Cool the skin with a cool shower or damp cloth, and drink extra water.
• Ask a pharmacist about after-sun gels and pain relief.
• Keep the area covered until it heals.

Seek medical help for blistering over a large area, fever, chills, dizziness, or burns on a baby or young child. Inhabited islands have a health centre; the main hospitals are in Malé and Hulhumalé. Check that your policy covers medical evacuation: see travel insurance for the Maldives and our wider health and safety guide.

Local island life already follows the sun: people rest in the heat of the day and come out in the cool of the evening. Copy them.

On Dhiffushi, the island’s eastern beaches catch the first light of the morning, which makes a sunrise swim or walk one of the best (and gentlest) ways to enjoy the sea before the UV builds. Our Dhiffushi packing list includes the sun kit worth bringing; sunscreen is sold on many islands, but choice can be limited.

Visitors are not expected to fast during Ramadan; drink discreetly, away from public view, in daylight on local islands, but keep drinking enough. See Ramadan in the Maldives.