Vitamin D in Bahamas in January: sun, UV and what to expect

Good Good. A full dose takes about 10 minutes at midday, and the usable window is about 5.9 hours a day.

5.9 hsun window (UV 2.5+)

5.3peak UV Index

10 minto a full dose

26°Cafternoon high

1/30rainy days

27/30sunny days

Best places in Bahamas in January: Exuma (good), Nassau (good), Paradise Island (good), Eleuthera (good), Harbour Island (good).

Open Bahamas for January on the map Find stays in Bahamas

How long in the sun in January?

Plan your sun session around midday (roughly 11:00 to 15:00), when the UV Index peaks at about 5.3. With about a quarter of your skin bare, a full dose takes around 10 minutes for skin type III at age 30, and about 19 minutes at age 65.
Stop well before your skin turns pink. At this UV level skin type III can start to burn after about 38 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	13 min	25 min
Type II	8 min	16 min	31 min
Type III	10 min	19 min	38 min
Type IV	15 min	28 min	57 min
Type V	20 min	38 min	75 min
Type VI	34 min	63 min	2.1 h

Minutes at midday for about 1,000 IU of vitamin D with a quarter of the body bare, at Eleuthera, 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 Bahamas in January

Place	Rating	Sun window	Full dose	Afternoon high	Rainy days
Exuma	Good	6.0 h	10 min	28°C	0/30
Nassau	Good	6.1 h	10 min	26°C	1/30
Paradise Island	Good	6.1 h	10 min	26°C	1/30
Eleuthera	Good	5.9 h	10 min	26°C	1/30
Harbour Island	Good	5.8 h	10 min	24°C	2/30
Freeport	Good	4.9 h	12 min	23°C	6/30

Other months in Bahamas

Best months: October to June. Full Bahamas guide

Other sunny places in January

All best places for vitamin D in January