When does Miami need sun protection?

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

Does Miami need sun protection in winter?

Usually yes. At 25.8°N, winter middays in Miami still commonly reach UV 3 or higher. Check today's live reading on this page before a long lunch outside.

Does the water make UV worse in Miami?

It can. Sand and water reflect ultraviolet, so skin that is not covered (including under the chin and on the tops of feet) picks up extra dose on top of the direct sun. The live UV index on this page is the sky reading; reflection is on top of that.

UV index in Miami today

At 25°N, Miami's tropical sun keeps the UV index high year-round. Sand, pool decks and open water reflect extra ultraviolet onto uncovered skin, and sea breeze makes it easy to forget you are still in protection weather.

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

Today and tomorrow in Miami

Peak UV, temperature and conditions for Miami. 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 beach day in Miami can still sit at protection levels. Why you burn on cloudy days.

When Miami needs sun protection

Sun protection is needed on most days in Miami, including winter, when midday UV still commonly reaches moderate to high levels.

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.

Where the UV adds up in Miami

Long, happy hours outdoors are where exposure quietly accumulates. Local favourites where the five S’s earn their keep:

South Beach and Lummus Park
Key Biscayne and Crandon Park
Bayfront Park
The Venetian Causeway

The UV scale at a glance

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

Frequently asked questions

When does Miami need sun protection?: Whenever the UV index is 3 or above. In Miami that is most of the year, including many winter middays. The EPA Sun Safety action steps apply at the same threshold used worldwide.
Does Miami need sun protection in winter?: Usually yes. At 25.8°N, winter middays in Miami still commonly reach UV 3 or higher. Check today's live reading on this page before a long lunch outside.
Does the water make UV worse in Miami?: It can. Sand and water reflect ultraviolet, so skin that is not covered (including under the chin and on the tops of feet) picks up extra dose on top of the direct sun. The live UV index on this page is the sky reading; reflection is on top of that.