Castries, Saint Lucia: vitamin D, best months and travel guide
Capital with a market and cruise port. Best for: short stays, shoppers.
The best months for vitamin D in Castries are February to May, October, when a full dose takes about 6 minutes at midday. Rainy or stormy from June to September and from November to January.
Castries month by month
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|
| January | Bad weather | 7.5 h | 7.3 | 7 min | 28°C | 20/30 |
| February | Excellent | 7.9 h | 8.1 | 7 min | 29°C | 13/30 |
| March | Excellent | 8.4 h | 8.9 | 6 min | 30°C | 14/30 |
| April | Excellent | 8.7 h | 9.1 | 6 min | 30°C | 11/30 |
| May | Excellent | 8.9 h | 8.9 | 6 min | 31°C | 11/30 |
| June | Bad weather | 8.9 h | 8.8 | 6 min | 31°C | 22/30 |
| July | Bad weather | 8.6 h | 8.6 | 6 min | 30°C | 26/30 |
| August | Bad weather | 8.5 h | 8.8 | 6 min | 30°C | 27/30 |
| September | Bad weather | 8.4 h | 8.6 | 6 min | 31°C | 23/30 |
| October | Excellent | 8.0 h | 8.2 | 7 min | 31°C | 17/30 |
| November | Bad weather | 7.5 h | 7.1 | 8 min | 30°C | 23/30 |
| December | Bad weather | 7.3 h | 6.7 | 8 min | 28°C | 18/30 |
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 Castries
Capital with a market and cruise port. A dry season from December to April and a wetter season from June to November. Hills are steep and roads winding. Beaches range from calm west coast to windy east coast.
In Castries afternoon highs average from 28°C in January to 31°C in October. The wettest month is August (about 27 rainy days out of 30) and the driest is May (11). Midday UV peaks at 9.1 in April, which is very strong, so protect your skin.
The capital (Wikivoyage, CC BY-SA 4.0)
More about Saint Lucia · Saint Lucia in April · Best places in April
Questions about Castries
When is the best time to visit Castries for vitamin D?
The best months for vitamin D in Castries are February to May, October, when a full dose takes about 6 minutes at midday.
What is the weather like in Castries?
Afternoon highs average from 28°C in January to 31°C in October. The wettest month is August, with about 27 rainy days out of 30.
Which months should I avoid in Castries?
For a beach stay, avoid the months when it is rainy or stormy from June to September and from November to January.