When does Martello Castle need sun protection?

Whenever the UV index is 3 or above. In Martello Castle that is most of the year, including many winter middays. The EPA Sun Safety action steps apply at the same threshold used worldwide.

Does Martello Castle need sun protection in winter?

Usually yes. At 29.9°N, winter middays in Martello Castle still commonly reach UV 3 or higher. Check today's live reading on this page before a long lunch outside.

Can you burn on a cool day in Martello Castle?

Yes. UV is not heat. A cool, windy or lightly cloudy day in Martello Castle 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 Martello Castle today

Martello Castle in Louisiana sits inland at 29.9°S, where dry air and fewer clouds often mean harsher UV than the temperature suggests. Summer middays typically reach 10–12 (very high to extreme). This is subtropical sun: protection weather for much 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 Martello Castle

Peak UV, temperature and conditions for Martello Castle. 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 Martello Castle can still sit at protection levels. Why you burn on cloudy days.

When Martello Castle needs sun protection

Sun protection is needed in Martello Castle 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

Frequently asked questions

When does Martello Castle need sun protection?: Whenever the UV index is 3 or above. In Martello Castle that is most of the year, including many winter middays. The EPA Sun Safety action steps apply at the same threshold used worldwide.
Does Martello Castle need sun protection in winter?: Usually yes. At 29.9°N, winter middays in Martello Castle still commonly reach UV 3 or higher. Check today's live reading on this page before a long lunch outside.
Can you burn on a cool day in Martello Castle?: Yes. UV is not heat. A cool, windy or lightly cloudy day in Martello Castle 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.