When winter arrives, it’s easy to assume sun protection can take a back seat. But even in cold weather, your baby’s delicate skin can still be exposed to UV rays—especially on sunny days, near windows, or during outdoor walks.

According to both the American Academy of Pediatrics (AAP) and the Canadian Paediatric Society (CPS), babies need thoughtful sun protection year-round, not just in summer. Here’s what parents should know to keep little ones safe in every season.

1. UVA Rays Don’t Go Away in Winter

Cold air doesn’t weaken UVA rays—the deeper-penetrating rays responsible for long-term skin damage. If it’s daylight, UVA is present, even when:

• The sky is cloudy

• The temperature is freezing

• The sun feels weak

Because a baby’s skin is thinner and more sensitive, these rays matter even when there’s no risk of sunburn.

For a full overview of infant sun safety, explore our New Parent’s Guide to Baby Sun Protection (0–24 Months).

2. Snow Can Reflect Up to 80% of UV Rays

In snowy environments, UV exposure can increase because snow reflects sunlight from below—similar to water or sand. Babies in:

• Strollers

• Carriers

• Toboggans

• Or simply outdoors on a bright winter day

…may receive indirect UV exposure, even if they’re bundled up.

But this brings us to an important point…

3. In Cold Climates, Warm Layers Already Provide Strong Protection

Parents in truly cold regions often already have their baby in:

• Snowsuits

• Jackets

• Mittens

• Hats

• Cozy stroller blankets

These layers naturally block UV exposure—no special sun gear required.

So, UPF clothing isn’t meant to replace warm winter layers.

And if your baby is fully bundled, they’re already well protected from UV.

However, there are specific winter scenarios where additional sun protection still matters.

4. When UPF Clothing Does Make Sense in Winter

UPF protection can be helpful when:

✔ Your baby has exposed skin

(mild winter climates or quick sunny outings)

✔ Your baby isn’t bundled

(car rides, indoor-outdoor transitions)

✔ UVA comes through windows

(in cars or bright indoor spaces)

✔ You’re dealing with snow reflection

(especially midday on clear days)

✔ Your family travels to a warm or sunny destination

(where UV is suddenly much stronger)

In these cases, lightweight UPF layers offer gentle, chemical-free protection without overheating your little one.

Learn more in UPF Explained: Why Babies and Toddlers Need Sun-Protective Clothing.

5. Stroller Walks Can Still Expose Skin

Even bundled babies may have exposed cheeks, noses, or hands. Simple adjustments help:

• Extend the stroller canopy fully

• Use breathable shade covers

• Position your stroller to avoid direct bright light

• Keep outings shorter during midday sun

If a sunburn ever happens, see Sunburns Happen: What to Do If Your Baby Gets One.

6. Sunscreen Still Isn’t Recommended Under 6 Months

Winter does not change this guidance.

Both the AAP and CPS recommend:

Avoid sunscreen for babies under 6 months.

Why?

• Their skin is more permeable

• They’re more sensitive to irritation

• Shade and physical protection are safer

Learn more in Why Babies Under 6 Months Should Avoid Sunscreen.

7. Window Exposure Adds Up (Cars + Homes)

Remember:

UVA passes through glass.

So babies can receive UV exposure:

• In car seats

• During stroller naps under weather shields

• Near bright home windows

Positioning babies slightly away from direct light—or using shade covers—helps reduce exposure.

8. Planning a Winter Trip? UV Levels Change Quickly in Sunny Destinations

If your family is heading somewhere warm this winter, UV numbers will be far higher than in cold climates. We break down how to protect your baby during travel in our upcoming article:

👉 Baby Sun Safety for Winter Travel

Final Thoughts

Winter may feel like a low-risk season for sun exposure, but UV is present year-round. With a few simple habits—most of which you’re likely already doing—your baby can stay safe and comfortable through every season.

Looking for gentle, chemical-free protection?

Explore our lightweight UPF clothing, designed to keep little ones comfortable and covered in every season.