When does Merty Merty need sun protection?

Whenever the UV index is 3 or above. In Merty Merty that is most of the year, including many winter middays. SunSmart and ARPANSA use the same rule Australia-wide.

Does Merty Merty need sun protection in winter?

Usually yes. At 28.6°S, winter middays in Merty Merty still commonly reach UV 3 or higher, the SunSmart threshold for Slip, Slop, Slap, Seek, Slide. Check today's live reading on this page before a long lunch outside.

Can you burn on a cool day in Merty Merty?

Yes. UV is not heat. A cool, windy or lightly cloudy day in Merty Merty can still sit at UV 3 or above, especially from spring through autumn. Temperature on this page is for context only; the UV number is what decides protection.

UV index in Merty Merty today

Inland Merty Merty (SA) is 28.6° south. Without sea haze, January UV commonly runs 10–12 (very high to extreme), and a cool morning is no reason to skip sunscreen. This is subtropical sun: protection weather for most of the year, with winter middays that still often reach 3 or more.

Live reading · data by Open-Meteo · reference monitoring by ARPANSA

Today and tomorrow in Merty Merty

Peak UV, temperature and conditions for Merty Merty. Tomorrow’s peak is the number to plan around if you’re heading out in the middle of the day.

Weather conditions right now

Cloud and rain cut heat more than they cut UV. A partly cloudy day in Merty Merty can still sit at protection levels. Why you burn on cloudy days.

When Merty Merty needs sun protection

Sun protection is needed in Merty Merty most of the year, including many winter middays. Inland heat or a cool change does not change the UV index; go by the number, not how the day feels.

The threshold, per SunSmart and ARPANSA: whenever UV reaches 3 or above, Slip on covering clothing, Slop on SPF 50+ sunscreen, Slap on a hat, Seek shade and Slide on sunglasses. Read the full sun safety guide.

The UV scale at a glance

0–2Low
3–5Moderate
6–7High
8–10Very high
11+Extreme

Local support in South Australia

Cancer Council SA: South Australian prevention programs and support services.

Frequently asked questions

When does Merty Merty need sun protection?: Whenever the UV index is 3 or above. In Merty Merty that is most of the year, including many winter middays. SunSmart and ARPANSA use the same rule Australia-wide.
Does Merty Merty need sun protection in winter?: Usually yes. At 28.6°S, winter middays in Merty Merty still commonly reach UV 3 or higher, the SunSmart threshold for Slip, Slop, Slap, Seek, Slide. Check today's live reading on this page before a long lunch outside.
Can you burn on a cool day in Merty Merty?: Yes. UV is not heat. A cool, windy or lightly cloudy day in Merty Merty can still sit at UV 3 or above, especially from spring through autumn. Temperature on this page is for context only; the UV number is what decides protection.