Cape May best: Excellent
Victorian town of pastel houses and bird watching.
Vitamin D in New Jersey: best months for sun and a travel guide
The best months for vitamin D in New Jersey are June to September. In June, a full dose of about 1,000 IU takes around 7 minutes at midday for skin type III at age 30, with 9.0 usable sun hours a day. For a beach stay it is too cool from October to May.
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New Jersey month by month
New Jersey 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 | Too cold | 0.8 h | 2.1 | – | – | 5°C | 11/30 |
| February | Too cold | 3.6 h | 3.4 | 16 min | 29 min | 7°C | 5/30 |
| March | Too cold | 5.0 h | 4.5 | 12 min | 22 min | 9°C | 9/30 |
| April | Too cold | 6.4 h | 5.4 | 10 min | 19 min | 12°C | 6/30 |
| May | Too cold | 6.8 h | 6.2 | 9 min | 16 min | 21°C | 3/30 |
| June | Excellent | 9.0 h | 7.5 | 7 min | 13 min | 22°C | 5/30 |
| July | Excellent | 8.5 h | 7.2 | 7 min | 14 min | 29°C | 3/30 |
| August | Excellent | 7.9 h | 6.8 | 8 min | 15 min | 27°C | 6/30 |
| September | Good | 5.6 h | 4.9 | 11 min | 20 min | 23°C | 3/30 |
| October | Too cold | 5.4 h | 4.5 | 12 min | 22 min | 18°C | 0/30 |
| November | Too cold | 2.8 h | 3.0 | 18 min | 33 min | 16°C | 4/30 |
| December | Too cold | 0.5 h | 2.1 | – | – | 7°C | 10/30 |
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.
Travel guide: why go to New Jersey
Why go
The Jersey Shore has boardwalks, amusement piers and Victorian towns, and is a summer favourite for northeast Americans.
Best for
Families, groups and day-trippers.
What to expect
A short beach season from June to September, a cool Atlantic early on, and crowded weekends. Beach badges are often needed.
Places in New Jersey
Each place has its own climate, so its best months can differ from the country as a whole.
Atlantic City best: Excellent
Casinos and the original boardwalk.
A famed 1800s oceanfront resort town reborn as a gambling center in the late 1970s
Wildwood best: Excellent
Retro motels, wide beach and a huge boardwalk.
Asbury Park best: Excellent
Music town with an arts scene and a boardwalk.
Long Beach Island best: Excellent
Narrow island of lighthouse, quiet beaches and rentals.
Seaside Heights best: Excellent
Classic boardwalk with rides and games.
Some short descriptions come from Wikivoyage (CC BY-SA 4.0).
Questions about vitamin D in New Jersey
When is the best time to visit New Jersey for vitamin D?
The best months for vitamin D in New Jersey are June to September. In June, a full dose of about 1,000 IU takes around 7 minutes at midday for skin type III at age 30, with 9.0 usable sun hours a day.
Can you get vitamin D from the sun in New Jersey in December?
Not really. In December the sun in New Jersey is too low or too weak to make useful vitamin D, and afternoons are cool. Plan your sun for other months.
How long do I need in the sun in New Jersey?
In June, the best month, about 7 minutes at midday with a quarter of the body bare, for skin type III at age 30; about 13 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.
Which months should I avoid in New Jersey?
For a beach stay, avoid the months when it is too cool from October to May.
What is the best place in New Jersey for vitamin D?
In June the strongest sun of the places we rate is around Atlantic City. Each place has its own rating, so open the place list to compare them.
Plan by month
- 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