UV index in Mexico City in October
In October, the UV index in Mexico City typically peaks around 7.7 at midday — high on the WHO scale — with individual days reaching 8.9 in recent years. Sun protection is needed around the middle of the day.
How fast would you burn?
Estimated time to sunburn in unprotected midday sun at UV 7.7:
| Skin type | Time to burn |
|---|---|
| I — Very fair | ~17 min |
| II — Fair | ~22 min |
| III — Medium | ~30 min |
| IV — Olive | ~39 min |
Estimates from typical minimal erythemal doses — see methodology. Darker types (V–VI) burn slower still. Reflection off water or sand shortens all of these.
What to do about it
- SPF 30–50 every day, applied before you go out and reapplied every 2 hours.
- Plan beach, hiking, or long outdoor time before 11am or after 3pm when you can.
- A hat and sunglasses stop the exposure your sunscreen misses — face and eyes take the worst of it.
Planning a trip? Check the live UV index in Mexico City closer to your dates — day-to-day cloud cover moves the real number around this average.
Mexico City's UV year at a glance
| Month | Typical midday peak | Level |
|---|---|---|
| January | 6.7 | High |
| February | 7.9 | High |
| March | 9.2 | Very high |
| April | 9.7 | Very high |
| May | 9.7 | Very high |
| June | 8.6 | Very high |
| July | 9 | Very high |
| August | 9.4 | Very high |
| September | 8.6 | Very high |
| October | 7.7 | High |
| November | 7.1 | High |
| December | 6.4 | High |
The strongest month is April (typical peak 9.7); the gentlest is December (typical peak 6.4).
← September · Mexico City live · November →
☀️ Get tomorrow's UV before it gets you
One short email each morning with your city's peak UV, when it hits, and whether you need sunscreen that day. Free, no spam, unsubscribe anytime.