Sun Exposure and Sunburn in Babies Under 6 Months
Content reviewed against published AAP, FDA, CDC guidelines
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Baby skin is sensitive and changes frequently. If you are noticing sun exposure and sunburn in babies under 6 months, here is what you need to know.
The short answer
Babies under 6 months should be kept out of direct sunlight because their skin is extremely thin and sensitive, making them highly susceptible to sunburn. Sunscreen is not recommended for babies under 6 months. Instead, protect your baby with shade, lightweight clothing that covers arms and legs, and a wide-brimmed hat. If your baby under 6 months gets any degree of sunburn, contact your pediatrician, as it is considered a medical concern at this age.
Key takeaways
- Babies under 6 months should be kept out of direct sunlight because their skin is extremely thin and sensitive, making them highly susceptible to sunburn. Sunscreen is not recommended for babies under 6 months. Instead, protect your baby with shade, lightweight clothing that covers arms and legs, and a wide-brimmed hat. If your baby under 6 months gets any degree of sunburn, contact your pediatrician, as it is considered a medical concern at this age.
- Usually normal when: Your baby is under 6 months and you successfully keep them in shade and covered with appropriate clothing outdoors.
- Call your doctor if: Your baby under 6 months has any visible sunburn, even if it appears mild.
- Varies by age — see the age-by-age breakdown below
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By Age
What to expect by age
0-3 months
Newborn skin is especially vulnerable to UV damage. Their skin has less melanin and is thinner than older babies, meaning UV radiation penetrates more deeply. Keep your baby in shade at all times when outdoors. Use a stroller canopy, umbrella, or shade structure. Dress your baby in lightweight, long-sleeved clothing and a hat with a brim. The AAP advises against sunscreen use under 6 months due to the immature skin barrier. If small areas like the hands or face will be exposed, the AAP says a minimal amount of sunscreen (SPF 30+) can be applied as a last resort if shade and clothing are not available.
3-6 months
Continue keeping your baby out of direct sunlight and using shade, clothing, and hats as primary protection. Avoid outdoor activities during peak UV hours (10 AM - 4 PM). Even on cloudy days, up to 80% of UV rays can penetrate clouds. Reflective surfaces like water, sand, and concrete increase UV exposure. If your baby gets sunburned, even a mild redness, call your pediatrician. Cool compresses can help while you wait for guidance. Signs of more severe sunburn include blistering, fever, and fussiness.
6-12 months
After 6 months, you can use broad-spectrum, SPF 30+ sunscreen on all exposed skin. Apply 15-30 minutes before going outside and reapply every 2 hours or after water exposure. Continue using shade, sun-protective clothing, and hats as your primary defense. Sunglasses with UV protection help protect your baby's eyes. If your baby gets sunburned, use cool compresses, fragrance-free moisturizer, and offer extra fluids. Contact your pediatrician if the burn blisters or your baby seems unwell.
What Should You Do?
When to take action
- Your baby is under 6 months and you successfully keep them in shade and covered with appropriate clothing outdoors.
- Your baby over 6 months wears sunscreen and you reapply regularly.
- Brief incidental sun exposure (like walking to the car) that does not result in redness.
- You need guidance on sun protection for an upcoming outdoor event or vacation with your young baby.
- Your baby under 6 months has mild pinkness after brief sun exposure.
- You are confused about conflicting advice about sunscreen use for babies.
- Your baby under 6 months has any visible sunburn, even if it appears mild.
- Your baby has sunburn with blisters, swelling, or fever at any age.
- Your baby shows signs of heat stroke after sun exposure: high body temperature, hot dry skin, rapid pulse, confusion, or unresponsiveness.
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss Sun Exposure and Sunburn in Babies Under 6 Months.
Things to mention
- You need guidance on sun protection for an upcoming outdoor event or vacation with your young baby.
- Your baby under 6 months has mild pinkness after brief sun exposure.
- You are confused about conflicting advice about sunscreen use for babies.
Observations to share
- You need guidance on sun protection for an upcoming outdoor event or vacation with your young baby.
- Your baby under 6 months has mild pinkness after brief sun exposure.
- You are confused about conflicting advice about sunscreen use for babies.
Urgent signs to report immediately
- Your baby under 6 months has any visible sunburn, even if it appears mild.
- Your baby has sunburn with blisters, swelling, or fever at any age.
- Your baby shows signs of heat stroke after sun exposure: high body temperature, hot dry skin, rapid pulse, confusion, or unresponsiveness.
My notes
From ismybabyalright.com — free, evidence-based baby health guides
Related Conditions
Treating Sunburn in Babies and Toddlers
If your baby gets a sunburn, immediately move them out of the sun and apply cool (not cold) compresses to the affected area. For mild sunburn, apply fragrance-free moisturizer or pure aloe vera gel. Give extra fluids to prevent dehydration. Avoid numbing sprays or products with benzocaine. Any sunburn in a baby under 6 months, or a sunburn with blisters, fever, or covering a large area in any child, requires a call to your pediatrician.
Baby Swimming and Pool Safety by Age
Babies can be introduced to water as early as 1-2 months in a warm, clean pool under close supervision, though the AAP recommends formal swim lessons starting at age 1. The water should be at least 84F (29C) for young babies. Drowning is the leading cause of death in children ages 1-4, making water safety critical. No child should ever be in or near water without direct, arms-reach adult supervision. Infant "survival swim" programs are not a substitute for active supervision.
Winter Dry Skin and Cracking in Babies
Baby skin is thinner and more sensitive than adult skin, making it particularly prone to dryness and cracking during winter months when cold outdoor air and dry indoor heating combine to strip moisture. Regular use of a thick, fragrance-free moisturizer (cream or ointment rather than lotion) applied within 3 minutes of bathing is the best prevention and treatment. Limit baths to 5-10 minutes with lukewarm water, use gentle cleansers, and dress your baby in soft fabrics.
Related Resources
Baby Skin Conditions Guide
Visual guide to common baby skin conditions, rashes, and when to see a doctor.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
When to Call the Doctor
General guide on when to call the pediatrician, visit urgent care, or go to the ER.
Frequently asked questions
Is sun exposure and sunburn in babies under 6 months normal?
When should I call the doctor about sun exposure and sunburn in babies under 6 months?
When is sun exposure and sunburn in babies under 6 months normal?
What causes sun exposure and sunburn in babies under 6 months?
What should I mention to my pediatrician about sun exposure and sunburn in babies under 6 months?
Is sun exposure and sunburn in babies under 6 months normal at 0-3 months?
Is sun exposure and sunburn in babies under 6 months normal at 3-6 months?
Should I go to the ER for sun exposure and sunburn in babies under 6 months?
Does sun exposure and sunburn in babies under 6 months go away on its own?
References
- [1]American Academy of Pediatrics - Sun Safety: Information for Parents About Sunburn, Sunscreen, and Sun Exposure. HealthyChildren.org. AAP
- [2]U.S. Food and Drug Administration - Should You Put Sunscreen on Infants? Not Usually. FDA
- [3]Centers for Disease Control and Prevention - Shade Planning for Sun Safety. CDC
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources
Related Resources
Bottom line
Most cases of sun exposure and sunburn in babies under 6 months are normal. Talk to your pediatrician if your baby under 6 months has any visible sunburn, even if it appears mild.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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Related Skin Concerns
Treating Sunburn in Babies and Toddlers
If your baby gets a sunburn, immediately move them out of the sun and apply cool (not cold) compresses to the affected area. For mild sunburn, apply fragrance-free moisturizer or pure aloe vera gel. Give extra fluids to prevent dehydration. Avoid numbing sprays or products with benzocaine. Any sunburn in a baby under 6 months, or a sunburn with blisters, fever, or covering a large area in any child, requires a call to your pediatrician.
Baby Swimming and Pool Safety by Age
Babies can be introduced to water as early as 1-2 months in a warm, clean pool under close supervision, though the AAP recommends formal swim lessons starting at age 1. The water should be at least 84F (29C) for young babies. Drowning is the leading cause of death in children ages 1-4, making water safety critical. No child should ever be in or near water without direct, arms-reach adult supervision. Infant "survival swim" programs are not a substitute for active supervision.
Winter Dry Skin and Cracking in Babies
Baby skin is thinner and more sensitive than adult skin, making it particularly prone to dryness and cracking during winter months when cold outdoor air and dry indoor heating combine to strip moisture. Regular use of a thick, fragrance-free moisturizer (cream or ointment rather than lotion) applied within 3 minutes of bathing is the best prevention and treatment. Limit baths to 5-10 minutes with lukewarm water, use gentle cleansers, and dress your baby in soft fabrics.
My Baby Has an Extra Nipple (Accessory Nipple)
Accessory (supernumerary) nipples are one of the most common minor congenital findings, occurring in about 1 in 18 people. They appear as small, flat, often pigmented bumps along the "milk line" — an embryonic line running from the armpit to the groin on each side. Most people mistake them for moles. Accessory nipples are almost always harmless and require no treatment. In rare cases, they may be associated with kidney abnormalities, so some pediatricians recommend a renal ultrasound if one is found, though this practice varies.
My Baby Was Born with a Raw Spot on Their Scalp (Aplasia Cutis)
Aplasia cutis congenita (ACC) is a condition where a baby is born with a small area of missing skin, most commonly on the scalp. It occurs in about 1 in 10,000 births. The affected area may look like a raw wound, an ulcer, or may have already healed into a thin, shiny scar by the time of birth. Most cases are small, isolated, and heal well with basic wound care — the area eventually forms a hairless scar. Larger defects or those associated with other findings may need more investigation, but isolated small ACC has an excellent prognosis.
New Treatments for Atopic Dermatitis (Eczema) in Children
Treatment for atopic dermatitis in children has advanced significantly in recent years. While moisturizers and topical steroids remain first-line treatments, newer options include non-steroidal topical medications (like crisaborole), biologic therapies (like dupilumab, approved for children 6 months and older), and JAK inhibitors. Most children's eczema is well-managed with basic skin care and mild topical treatments, but these newer options provide hope for moderate-to-severe cases.