Cancún, Mexico: vitamin D, best months and travel guide
Big resort strip of all-inclusives, white sand and nightlife. Best for: families, groups, couples.
The best months for vitamin D in Cancún are November to May, when a full dose takes about 6 minutes at midday. Rainy or stormy from June to October.
Cancún month by month
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|
| January | Good | 6.5 h | 5.9 | 9 min | 27°C | 16/30 |
| February | Excellent | 7.2 h | 7.0 | 8 min | 27°C | 9/30 |
| March | Excellent | 8.1 h | 8.1 | 7 min | 29°C | 11/30 |
| April | Excellent | 8.7 h | 8.7 | 6 min | 30°C | 7/30 |
| May | Excellent | 9.1 h | 8.9 | 6 min | 32°C | 8/30 |
| June | Bad weather | 8.2 h | 8.3 | 6 min | 31°C | 20/30 |
| July | Bad weather | 9.0 h | 8.7 | 6 min | 32°C | 20/30 |
| August | Bad weather | 8.5 h | 8.4 | 6 min | 32°C | 23/30 |
| September | Bad weather | 8.0 h | 8.0 | 7 min | 31°C | 21/30 |
| October | Bad weather | 7.1 h | 7.0 | 8 min | 30°C | 20/30 |
| November | Good | 6.5 h | 6.0 | 9 min | 29°C | 16/30 |
| December | Good | 5.7 h | 5.2 | 10 min | 27°C | 13/30 |
Sun window is the number of hours a day with UV Index 2.5 or higher. Full dose is the minutes at midday for about 1,000 IU of vitamin D with a quarter of the body bare, for skin type III. Rainy days are days with at least 1 mm out of 30.
What to expect in Cancún
Big resort strip of all-inclusives, white sand and nightlife. A dry season from November to April on both coasts, and hot, humid weather with rain and hurricanes from June to November. Sargassum seaweed can affect Caribbean beaches in spring and summer. Use bottled water in most places.
In Cancún afternoon highs average from 27°C in December to 32°C in August. The wettest month is August (about 23 rainy days out of 30) and the driest is April (7). Midday UV peaks at 8.9 in May, which is very strong, so protect your skin.
The hotel zone is a thin strip of sand between the sea and a lagoon, lined with large resorts. The sea is warm and the sand is white. Cancún is a base for day trips to Isla Mujeres, Chichén Itzá and cenotes. Seaweed can affect the beaches in warm months.
One of the world's most popular and famous beaches, known for its clear Caribbean waters, its lively party atmosphere, and its… (Wikivoyage, CC BY-SA 4.0)
Questions about Cancún
When is the best time to visit Cancún for vitamin D?
The best months for vitamin D in Cancún are November to May, when a full dose takes about 6 minutes at midday.
What is the weather like in Cancún?
Afternoon highs average from 27°C in December to 32°C in August. The wettest month is August, with about 23 rainy days out of 30.
Which months should I avoid in Cancún?
For a beach stay, avoid the months when it is rainy or stormy from June to October.