Saint-Jean, Saint Barthélemy: vitamin D, best months and travel guide
Busy beach with restaurants and the airport nearby. Best for: couples, groups.
The best months for vitamin D in Saint-Jean are October, December to July, when a full dose takes about 6 minutes at midday. Rainy or stormy from August to September and in November.
Saint-Jean month by month
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|
| January | Excellent | 7.1 h | 6.8 | 8 min | 26°C | 15/30 |
| February | Excellent | 7.6 h | 7.6 | 7 min | 26°C | 12/30 |
| March | Excellent | 8.4 h | 8.7 | 6 min | 26°C | 4/30 |
| April | Excellent | 8.8 h | 9.0 | 6 min | 27°C | 14/30 |
| May | Excellent | 9.0 h | 8.9 | 6 min | 28°C | 12/30 |
| June | Excellent | 8.9 h | 8.6 | 6 min | 29°C | 12/30 |
| July | Excellent | 8.8 h | 8.6 | 6 min | 29°C | 15/30 |
| August | Bad weather | 8.7 h | 8.9 | 6 min | 29°C | 17/30 |
| September | Bad weather | 8.4 h | 8.6 | 6 min | 30°C | 16/30 |
| October | Excellent | 7.4 h | 7.5 | 7 min | 29°C | 13/30 |
| November | Bad weather | 7.0 h | 6.6 | 8 min | 28°C | 18/30 |
| December | Good | 6.8 h | 6.3 | 8 min | 27°C | 9/30 |
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 Saint-Jean
Busy beach with restaurants and the airport nearby. A dry season from December to April and hurricane risk from June to November. Very high prices and small beaches. Winter holidays are the peak.
In Saint-Jean afternoon highs average from 26°C in February to 30°C in September. The wettest month is November (about 18 rainy days out of 30) and the driest is March (4). Midday UV peaks at 9.0 in April, which is very strong, so protect your skin.
More about Saint Barthélemy · Saint Barthélemy in March · Best places in March
Questions about Saint-Jean
When is the best time to visit Saint-Jean for vitamin D?
The best months for vitamin D in Saint-Jean are October, December to July, when a full dose takes about 6 minutes at midday.
What is the weather like in Saint-Jean?
Afternoon highs average from 26°C in February to 30°C in September. The wettest month is November, with about 18 rainy days out of 30.
Which months should I avoid in Saint-Jean?
For a beach stay, avoid the months when it is rainy or stormy from August to September and in November.