Cumberland Island, Georgia: vitamin D, best months and travel guide
Wild horses and an empty beach, reached by ferry or private boat. Best for: nature lovers, campers.
The best months for vitamin D in Cumberland Island are April to June, August, October, November, when a full dose takes about 7 minutes at midday. Too hot in July, too cool from December to March and rainy or stormy in September.
See Cumberland Island on the map Find stays in Cumberland Island
Cumberland Island month by month
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|
| January | Too cold | 3.9 h | 3.9 | 14 min | 16°C | 6/30 |
| February | Too cold | 5.5 h | 4.9 | 11 min | 18°C | 5/30 |
| March | Too cold | 6.3 h | 6.1 | 9 min | 21°C | 10/30 |
| April | Excellent | 8.0 h | 7.6 | 7 min | 24°C | 3/30 |
| May | Excellent | 8.5 h | 8.0 | 7 min | 29°C | 6/30 |
| June | Excellent | 9.1 h | 8.2 | 7 min | 31°C | 4/30 |
| July | Too hot | 8.8 h | 8.2 | 7 min | 32°C | 10/30 |
| August | Excellent | 7.8 h | 7.6 | 7 min | 30°C | 10/30 |
| September | Bad weather | 6.3 h | 6.4 | 8 min | 28°C | 13/30 |
| October | Good | 6.2 h | 5.5 | 10 min | 26°C | 7/30 |
| November | Good | 5.1 h | 4.6 | 12 min | 23°C | 3/30 |
| December | Too cold | 3.7 h | 3.6 | 15 min | 18°C | 8/30 |
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 Cumberland Island
Wild horses and an empty beach, reached by ferry or private boat. Hot, humid summers, a spring and autumn that are very pleasant, and hurricane risk from June to November. Beaches are calm and a bit brown, and you may see wild horses.
In Cumberland Island afternoon highs average from 16°C in January to 32°C in July. The wettest month is September (about 13 rainy days out of 30) and the driest is November (3). Midday UV peaks at 8.2 in June, which is very strong, so protect your skin.
Questions about Cumberland Island
When is the best time to visit Cumberland Island for vitamin D?
The best months for vitamin D in Cumberland Island are April to June, August, October, November, when a full dose takes about 7 minutes at midday.
What is the weather like in Cumberland Island?
Afternoon highs average from 16°C in January to 32°C in July. The wettest month is September, with about 13 rainy days out of 30.
Which months should I avoid in Cumberland Island?
For a beach stay, avoid the months when it is too hot in July, too cool from December to March and rainy or stormy in September.