Vitamin D in New Jersey in September: sun, UV and what to expect
Good Good. A full dose takes about 11 minutes at midday, and the usable window is about 5.6 hours a day.
5.6 hsun window (UV 2.5+)
4.9peak UV Index
11 minto a full dose
23°Cafternoon high
3/30rainy days
22/30sunny days
Best places in New Jersey in September: Wildwood (good), Cape May (good), Atlantic City (good), Asbury Park (good).
Open New Jersey for September on the map Find stays in New Jersey
How long in the sun in September?
- Plan your sun session around midday (roughly 11:00 to 15:00), when the UV Index peaks at about 4.9. With about a quarter of your skin bare, a full dose takes around 11 minutes for skin type III at age 30, and about 20 minutes at age 65.
- Stop well before your skin turns pink. At this UV level skin type III can start to burn after about 41 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 | 7 min | 14 min | 27 min |
| Type II | 9 min | 17 min | 34 min |
| Type III | 11 min | 20 min | 41 min |
| Type IV | 16 min | 31 min | 61 min |
| Type V | 22 min | 41 min | 82 min |
| Type VI | 36 min | 68 min | 2.3 h |
Minutes at midday for about 1,000 IU of vitamin D with a quarter of the body bare, at Asbury Park, 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 New Jersey in September
| Place | Rating | Sun window | Full dose | Afternoon high | Rainy days |
|---|---|---|---|---|---|
| Wildwood | Good | 6.4 h | 10 min | 24°C | 2/30 |
| Cape May | Good | 6.0 h | 10 min | 25°C | 6/30 |
| Atlantic City | Good | 5.9 h | 10 min | 24°C | 2/30 |
| Asbury Park | Good | 5.6 h | 11 min | 23°C | 3/30 |
| Long Beach Island | Too cold | 5.5 h | 10 min | 21°C | 5/30 |
| Seaside Heights | Too cold | 5.4 h | 11 min | 22°C | 2/30 |
Other months in New Jersey
- Jan Too cold
- Feb Too cold
- Mar Too cold
- Apr Too cold
- May Too cold
- Jun Excellent
- Jul Excellent
- Aug Excellent
- Sep Good
- Oct Too cold
- Nov Too cold
- Dec Too cold
Best months: June to September. Full New Jersey guide