When does Koloa-Poipu need sun protection?

Whenever the UV index is 3 or above. In Koloa-Poipu that is every day of the year. The EPA Sun Safety action steps apply at the same threshold used worldwide.

Does Koloa-Poipu need sun protection in winter?

Usually yes. At 21.9°N, winter middays in Koloa-Poipu 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 Koloa-Poipu?

Yes. UV is not heat. A cool, windy or lightly cloudy day in Koloa-Poipu 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 Koloa-Poipu today

Koloa-Poipu in Hawaii sits inland at 21.9°S, where dry air and fewer clouds often mean harsher UV than the temperature suggests. Summer middays typically reach 11–13 (extreme). This is tropical latitude: the UV index stays high on most days and does not take a winter off.

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

Today and tomorrow in Koloa-Poipu

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

When Koloa-Poipu needs sun protection

Sun protection is needed in Koloa-Poipu every day of the year. 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 Koloa-Poipu need sun protection?: Whenever the UV index is 3 or above. In Koloa-Poipu that is every day of the year. The EPA Sun Safety action steps apply at the same threshold used worldwide.
Does Koloa-Poipu need sun protection in winter?: Usually yes. At 21.9°N, winter middays in Koloa-Poipu 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 Koloa-Poipu?: Yes. UV is not heat. A cool, windy or lightly cloudy day in Koloa-Poipu 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.