Vitamin D in Georgia in January: sun, UV and what to expect
Too cold Too cold here in January: afternoon highs average only 16.1°C, which is too chilly for sunbathing in light clothing. Try another month or a warmer destination.
4.0 hsun window (UV 2.5+)
3.8peak UV Index
14 minto a full dose
16°Cafternoon high
8/30rainy days
25/30sunny days
How long in the sun in January?
- If you travel anyway, plan your sun session around midday (roughly 11:00 to 15:00), when the UV Index peaks at about 3.8. With about a quarter of your skin bare, a full dose takes around 14 minutes for skin type III at age 30, and about 26 minutes at age 65.
- Stop well before your skin turns pink. At this UV level skin type III can start to burn after about 53 minutes of midday sun, so cover up, find shade and use SPF 30+ on skin that stays out.
- Water, sand and light surfaces reflect UV, so at the beach you get a little more sun than the number suggests, for the good and the bad.
| Skin type | Full dose, age 30 | Full dose, age 65 | Time to burn |
|---|---|---|---|
| Type I | 9 min | 18 min | 35 min |
| Type II | 12 min | 22 min | 44 min |
| Type III | 14 min | 26 min | 53 min |
| Type IV | 21 min | 39 min | 79 min |
| Type V | 28 min | 53 min | 1.8 h |
| Type VI | 47 min | 88 min | 2.9 h |
Minutes at midday for about 1,000 IU of vitamin D with a quarter of the body bare, at Jekyll Island, the median coastal place. Time to burn is the time to reach one minimal erythemal dose and does not depend on age. A rough planning guide, not medical advice.
Places in Georgia in January
| Place | Rating | Sun window | Full dose | Afternoon high | Rainy days |
|---|---|---|---|---|---|
| Tybee Island | Too cold | 4.0 h | 14 min | 16°C | 5/30 |
| Cumberland Island | Too cold | 3.9 h | 14 min | 16°C | 6/30 |
| Jekyll Island | Too cold | 4.0 h | 14 min | 16°C | 8/30 |
| St. Simons Island | Too cold | 4.0 h | 14 min | 16°C | 8/30 |
| Savannah | Too cold | 3.9 h | 14 min | 17°C | 6/30 |
Other months in Georgia
- Jan Too cold
- Feb Too cold
- Mar Too cold
- Apr Excellent
- May Excellent
- Jun Excellent
- Jul Too hot
- Aug Excellent
- Sep Bad weather
- Oct Good
- Nov Good
- Dec Too cold
Best months: April to June, August, October, November. Full Georgia guide