A sunny vacation can quickly turn uncomfortable if you’re not prepared. Here’s how to protect your skin no matter where your passport takes you.

Whether you’re relaxing on a beach in Greece, hiking through Patagonia or exploring the streets of Mexico City, spending time outdoors is often one of the best parts of international travel. But many travelers underestimate just how intense the sun can be in unfamiliar destinations.

Sunburn isn’t just an uncomfortable souvenir. Too much ultraviolet (UV) exposure increases your risk of premature skin aging, eye damage and skin cancer. It can also lead to dehydration, heat illness and even derail your trip if you’re dealing with painful burns or blisters.

The good news? A little planning goes a long way. Here’s what every international traveler should know before heading into the sun.

The sun may be stronger than you expect

Many travelers assume they’re safe if the weather feels cool or cloudy. In reality, UV radiation doesn’t depend on temperature.

Several factors can increase your exposure while traveling:

• Higher elevations: Popular destinations like Cusco, Peru, the Swiss Alps and Mexico City have thinner atmospheres that allow more UV rays to reach your skin
• Locations near the equator: Tropical destinations receive more direct sunlight year-round
• Reflection from surfaces: Water, sand, snow and even light-colored pavement can reflect UV rays, increasing your exposure
• Different seasons: Summer in the Southern Hemisphere occurs during North America’s winter, catching some travelers off guard

No matter your destination, it’s a good idea to check the daily UV Index before heading outside. Many weather apps include this information, which can help you plan outdoor activities and know when extra precautions are needed.

Choose the right sunscreen

Not all sunscreens offer the same protection.

Look for a product that is:

• Broad-spectrum (protects against both UVA and UVB rays)
• SPF 30 or higher
• Water resistant if you’ll be swimming or sweating

Apply sunscreen about 15 to 30 minutes before going outside, and don’t forget commonly missed areas such as your ears, neck, the tops of your feet and the back of your hands.

Reapply every two hours, or immediately after swimming, sweating or towel drying.

If you’re traveling internationally, consider packing sunscreen from home. Sunscreen formulas, SPF labeling and product availability can vary by country. Having a familiar product ensures you’ll have protection from the moment you arrive.

Don’t rely on sunscreen alone

Sunscreen works best when combined with other forms of sun protection.

Whenever possible:

• Wear a wide-brimmed hat that shades your face, ears and neck.
• Choose lightweight, long-sleeved clothing or garments with UPF (Ultraviolet Protection Factor) ratings.
• Wear sunglasses that block 99% to 100% of UVA and UVB rays.
• Seek shade during the strongest sunlight, typically between 10 a.m. and 4 p.m.

Many travel clothing companies now offer breathable fabrics designed specifically for hot climates, making it easier to stay protected without overheating.

Water activities can increase your risk

Beach vacations and cruises often involve long hours near water, where UV exposure is amplified.

Water reflects sunlight onto your skin, and swimming can wash away sunscreen even if it’s labeled water resistant. Boat excursions also provide little natural shade, meaning passengers may spend hours in direct sunlight without realizing it.

If your itinerary includes snorkeling, kayaking, paddleboarding or sailing, be especially diligent about reapplying sunscreen and wearing protective clothing whenever possible.

Sunburn can happen faster at high altitude

Many travelers associate sunburn with tropical beaches, but mountain destinations present their own risks.

At higher elevations, there is less atmosphere to filter UV radiation, making sunburn possible in a surprisingly short amount of time. Snow can also reflect a significant amount of UV rays back toward your face and eyes.

Whether you’re skiing in New Zealand or hiking in the Andes, don’t skip sunscreen simply because the air feels cool.

Stay hydrated in the sun

Long sightseeing days, hot climates and increased physical activity can all contribute to dehydration.

Drink water throughout the day, even if you don’t feel thirsty. Alcohol, caffeine and excessive sweating can all increase fluid loss.

Watch for signs of dehydration, including:

• Dark-colored urine
• Dizziness
• Fatigue
• Headache
• Dry mouth

Taking regular breaks in the shade and carrying a reusable water bottle can help you stay comfortable throughout your trip.

Know what to do if you get sunburned

Even careful travelers can occasionally get too much sun.

If you develop a mild sunburn:

• Move out of direct sunlight
• Cool the affected skin with cool (not ice-cold) compresses or a cool shower
• Apply aloe vera gel or a fragrance-free moisturizer
• Drink extra water to stay hydrated
• Avoid additional sun exposure until your skin heals

If you develop severe blistering, significant swelling, fever, confusion or signs of heat illness, seek medical care promptly. Most countries have pharmacies that can recommend over-the-counter treatments, but more serious burns may require evaluation by a healthcare professional.

Before you leave: Build a travel sun safety kit

Packing a few essentials can help you avoid scrambling to find supplies once you arrive.

Consider including:

• Broad-spectrum SPF 30+ sunscreen
• SPF lip balm
• Wide-brimmed hat
• UV-blocking sunglasses
• Lightweight UPF clothing
• Reusable water bottle
• Aloe vera gel or after-sun moisturizer

These items take up little luggage space but can make a big difference in protecting your health throughout your trip.

Exploring the world often means spending more time outdoors, and that’s one of the greatest joys of travel. With a little preparation, you can enjoy beautiful beaches, historic cities and scenic mountain trails without paying the price of painful sunburn.

Making sun protection part of your travel routine helps ensure your memories are filled with incredible experiences, not time spent recovering in your hotel room.