Huatulco, Mexico: vitamin D, best months and travel guide
Nine protected bays with calm swimming. Best for: families, couples, snorkellers.
The best months for vitamin D in Huatulco are May, October to March, when a full dose takes about 6 minutes at midday. Too hot in April and rainy or stormy from June to September.
Huatulco month by month
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|
| January | Excellent | 7.4 h | 7.0 | 8 min | 32°C | 2/30 |
| February | Excellent | 7.9 h | 8.0 | 7 min | 32°C | 2/30 |
| March | Excellent | 8.5 h | 8.9 | 6 min | 33°C | 0/30 |
| April | Too hot | 8.9 h | 9.2 | 6 min | 34°C | 0/30 |
| May | Excellent | 9.0 h | 8.9 | 6 min | 34°C | 3/30 |
| June | Bad weather | 7.4 h | 7.6 | 7 min | 31°C | 19/30 |
| July | Bad weather | 8.1 h | 8.4 | 6 min | 31°C | 22/30 |
| August | Bad weather | 8.5 h | 8.6 | 6 min | 33°C | 21/30 |
| September | Bad weather | 6.3 h | 7.1 | 8 min | 30°C | 25/30 |
| October | Excellent | 6.6 h | 6.8 | 8 min | 30°C | 17/30 |
| November | Excellent | 7.5 h | 7.0 | 8 min | 31°C | 12/30 |
| December | Good | 6.8 h | 6.4 | 8 min | 32°C | 1/30 |
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 Huatulco
Nine protected bays with calm swimming. 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 Huatulco afternoon highs average from 30°C in September to 34°C in April. The wettest month is September (about 25 rainy days out of 30) and the driest is April (0). Midday UV peaks at 9.2 in April, which is very strong, so protect your skin.
Questions about Huatulco
When is the best time to visit Huatulco for vitamin D?
The best months for vitamin D in Huatulco are May, October to March, when a full dose takes about 6 minutes at midday.
What is the weather like in Huatulco?
Afternoon highs average from 30°C in September to 34°C in April. The wettest month is September, with about 25 rainy days out of 30.
Which months should I avoid in Huatulco?
For a beach stay, avoid the months when it is too hot in April and rainy or stormy from June to September.