UV index 4 meaning
Moderate
A UV index of 4 is Moderate. Unprotected skin can burn in under an hour, so sun protection is recommended whenever you’re outside for more than a few minutes.
What to do at UV 4
- Slop on SPF 50 or 50+ sunscreenBroad-spectrum and water-resistant, 20 minutes before you go out. Reapply every two hours.
- Slap on a broad-brimmed hatWide enough to shade your face, ears and neck. Caps leave too much exposed.
- Slip on clothing that covers your shouldersCollared shirts and long sleeves do more than any sunscreen.
- Slide on wraparound sunglassesLook for category 2 or higher under the Australian Standard.
- Seek shadeShade matters most around the middle of the day, when UV peaks.
How quickly skin burns at UV 4
Burn time depends on skin type, reflection from sand or water, and altitude. As a rough guide from official sun-safety advice, very fair skin can burn in under an hour at this level. Olive and darker skin takes longer to redden, but UV damage still adds up.
If a burn blisters, or you feel unwell after time in the sun, see your GP.
Places at UV 4 right now
Updated 12:31am AEDT
None of the places we track are at UV 4 right now. See today’s UV across Australia.
Nearby levels
FAQs about UV 4
- Is UV 4 high?
- UV 4 is in the Moderate category on the World Health Organization’s scale, which runs from Low (0 to 2) to Extreme (11 and above). Sun protection is recommended from 3 up.
- Do I need sunscreen at UV 4?
- Yes. Sun protection is recommended whenever the UV index is 3 or higher. Pair SPF 50 or 50+ sunscreen with a hat, clothing, shade and sunglasses.
- How long can you be in the sun at UV 4?
- There’s no safe amount of unprotected time once UV reaches 3, because damage adds up before skin goes red. As a rough guide from official sun-safety advice, very fair skin can burn in under an hour at this level.
- When does the UV index reach 4 in Australia?
- Mid-morning and mid-afternoon in summer, and around midday in the cooler months across southern Australia.