Tortola best: Excellent
Largest island and the sailing base, with beaches and hills.
The best months for vitamin D in British Virgin Islands are October, December to June. In March, a full dose of about 1,000 IU takes around 6 minutes at midday for skin type III at age 30, with 8.4 usable sun hours a day. For a beach stay it is rainy or stormy from July to September and in November.
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British Virgin Islands is rated at its median coastal place, for skin type III at age 30. Click a month for the details.
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Full dose, age 65 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|---|
| January | Excellent | 7.1 h | 6.7 | 8 min | 15 min | 27°C | 7/30 |
| February | Excellent | 7.2 h | 7.4 | 7 min | 14 min | 26°C | 14/30 |
| March | Excellent | 8.4 h | 8.7 | 6 min | 11 min | 26°C | 5/30 |
| April | Excellent | 8.8 h | 9.0 | 6 min | 11 min | 27°C | 17/30 |
| May | Excellent | 8.9 h | 8.8 | 6 min | 11 min | 28°C | 16/30 |
| June | Excellent | 8.8 h | 8.6 | 6 min | 12 min | 29°C | 16/30 |
| July | Bad weather | 8.8 h | 8.7 | 6 min | 11 min | 29°C | 18/30 |
| August | Bad weather | 8.6 h | 8.9 | 6 min | 11 min | 29°C | 15/30 |
| September | Bad weather | 8.5 h | 8.6 | 6 min | 12 min | 29°C | 18/30 |
| October | Excellent | 7.4 h | 7.4 | 7 min | 14 min | 29°C | 15/30 |
| November | Bad weather | 6.1 h | 6.1 | 9 min | 16 min | 28°C | 21/30 |
| December | Good | 6.8 h | 6.2 | 9 min | 16 min | 28°C | 15/30 |
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.
The British Virgin Islands are the sailing capital of the Caribbean, with short hops, sheltered anchorages and beach bars.
Sailors, couples and honeymooners.
A dry, breezy season from December to April and hurricane risk from June to November. Many visitors charter a boat. Prices are high and facilities are simple.
Each place has its own climate, so its best months can differ from the country as a whole.
Largest island and the sailing base, with beaches and hills.
Home to The Baths, a maze of giant granite boulders.
Barefoot beach bars at Soggy Dollar.
Flat coral island with white, pink-tinged beaches, flamingos and lobster.
Small capital and charter harbour.
The best months for vitamin D in British Virgin Islands are October, December to June. In March, a full dose of about 1,000 IU takes around 6 minutes at midday for skin type III at age 30, with 8.4 usable sun hours a day.
Yes, but slowly. In November a full dose takes about 9 minutes at midday for skin type III at age 30, with 6.1 usable hours a day.
In March, the best month, about 6 minutes at midday with a quarter of the body bare, for skin type III at age 30; about 11 minutes at age 65. Darker skin needs longer and fair skin burns sooner, so keep sessions short. This is an estimate for planning, not medical advice.
For a beach stay, avoid the months when it is rainy or stormy from July to September and in November.
In March the strongest sun of the places we rate is around Tortola. Each place has its own rating, so open the place list to compare them.