Places / Cancun, Mexico
UV index in Cancun, Mexico
Check another placeLoading today’s UV…
- Low 0 to 2
- Moderate 3 to 5
- High 6 to 7
- Very high 8 to 10
- Extreme 11+
Hour-by-hour numbers
| Time | UV index | Level |
|---|
The next few days
Each day’s UV curve and peak, drawn on the same scale so you can compare. The forecast reaches roughly four days ahead.
What to do today
About Cancun
Cancun sits on Mexico’s Caribbean coast, with exposed beaches and water activities that can keep you in the sun for hours. This forecast uses central Cancun coordinates; it does not measure conditions at an individual resort or cenote.
When to check the UV here
At this latitude, sun protection deserves attention beyond the summer holiday season. Cloud can change quickly, so read today’s hourly curve instead of assuming either a grey sky or the dry season tells the whole story.
Planning your time outside
Bring a swim shirt for time in the water and choose a substantial shaded break for the midday peak. Follow sunscreen labels after swimming, and check individual attraction rules before you travel.
How to read this forecast
The chart loads hourly model data from currentuvindex.com for 21.1619, -86.8515. Times are local to this forecast point. Open Hour-by-hour numbers for the values, or compare the next few days below the main chart.
The forecast describes UV for the area, not the dose on your skin. Buildings, trees, cloud and reflective surfaces can change your exposure. It does not measure a particular beach chair, trail or street.
What time does UV drop below 3?
Read the descending side of today’s curve, then check that the later hours remain below 3. The time changes with the date and weather. See how to find the afternoon drop instead of using a fixed clock time.
What should I bring?
Plan sun protection when the forecast reaches 3 or higher. Shade, covering, a hat, sunglasses and sunscreen work together. At very high UV, arrange outdoor time around the peak rather than relying on sunscreen alone.
Nearby or similar forecasts
Related guides
Sources and local information
UV forecasts are model estimates and can differ from conditions on the ground. Live data requires JavaScript and a connection to the provider; no typical UV values are substituted if it fails. Page updated October 15, 2026. See how the data works.