Roatán, Honduras: vitamin D, best months and travel guide
Largest of the Bay Islands with reefs, beaches and cruise stops. Best for: divers, families.
The best months for vitamin D in Roatán are January to June, when a full dose takes about 6 minutes at midday. Rainy or stormy from July to December.
Roatán month by month
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|
| January | Good | 6.6 h | 6.5 | 8 min | 27°C | 13/30 |
| February | Excellent | 7.5 h | 7.6 | 7 min | 26°C | 10/30 |
| March | Excellent | 8.3 h | 8.6 | 6 min | 28°C | 2/30 |
| April | Excellent | 8.8 h | 9.2 | 6 min | 28°C | 9/30 |
| May | Excellent | 8.9 h | 9.0 | 6 min | 29°C | 0/30 |
| June | Excellent | 7.9 h | 7.6 | 7 min | 29°C | 14/30 |
| July | Bad weather | 8.8 h | 8.6 | 6 min | 29°C | 22/30 |
| August | Bad weather | 8.8 h | 8.8 | 6 min | 29°C | 25/30 |
| September | Bad weather | 8.0 h | 8.4 | 6 min | 30°C | 23/30 |
| October | Bad weather | 7.1 h | 7.3 | 7 min | 28°C | 27/30 |
| November | Bad weather | 6.2 h | 6.3 | 8 min | 28°C | 21/30 |
| December | Bad weather | 6.5 h | 5.9 | 9 min | 26°C | 29/30 |
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 Roatán
Largest of the Bay Islands with reefs, beaches and cruise stops. A dry season from February to May and a wetter season from October to January. Take normal care in cities and check advice. Island life is relaxed.
In Roatán afternoon highs average from 26°C in February to 30°C in September. The wettest month is December (about 29 rainy days out of 30) and the driest is May (0). Midday UV peaks at 9.2 in April, which is very strong, so protect your skin.
Questions about Roatán
When is the best time to visit Roatán for vitamin D?
The best months for vitamin D in Roatán are January to June, when a full dose takes about 6 minutes at midday.
What is the weather like in Roatán?
Afternoon highs average from 26°C in February to 30°C in September. The wettest month is December, with about 29 rainy days out of 30.
Which months should I avoid in Roatán?
For a beach stay, avoid the months when it is rainy or stormy from July to December.