UV index in Cancún today
Live UV level in Cancún, Mexico right now, today's hourly forecast, and how long until your skin type burns.
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| Hour | UV index | Level |
|---|
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When is UV highest in Cancún?
UV peaks around solar noon — roughly 12–2pm local time. Seasonally, UV in Cancún peaks year-round — the sun passes nearly overhead in the tropics. In that peak period, UV levels in Cancún are high to extreme in every season, routinely reaching 10 or more around midday.
There is no low-UV season in Cancún: even in December and January, midday UV typically stays in the high range, so daily sun protection is advisable all year.
Typical midday peak UV by month
| Month | Typical peak | Level |
|---|---|---|
| January | 5.6 | Moderate |
| February | 6.7 | High |
| March | 8 | Very high |
| April | 8.7 | Very high |
| May | 9 | Very high |
| June | 8.1 | Very high |
| July | 8.7 | Very high |
| August | 8.6 | Very high |
| September | 7.8 | High |
| October | 7 | High |
| November | 5.9 | Moderate |
| December | 5.4 | Moderate |
Mean of daily peak UV, 2024–2025 model data. Click a month for detail on burn times and what to pack.
Do I need sunscreen in Cancún today?
Use the live reading above: the protection threshold is UV 3. If any part of your time outdoors falls in the hours marked moderate or higher, wear SPF 30+ broad-spectrum sunscreen and reapply every two hours. Water, sand, and snow reflect UV and can push your effective exposure well above the forecast number — as does altitude, at roughly +10% per 1,000 m.