Vitamin D in Belize in December: sun, UV and what to expect
Bad weather Bad weather: it rains on about 23 days in December (rainy or monsoon season), so sun is hard to count on and a beach stay is not recommended.
6.0 hsun window (UV 2.5+)
5.7peak UV Index
9 minto a full dose
28°Cafternoon high
23/30rainy days
27/30sunny days
The country rating is for a typical beach, but some places in Belize still work in December: Ambergris Caye (good).
How long in the sun in December?
- If you travel anyway, plan your sun session around midday (roughly 11:00 to 15:00), when the UV Index peaks at about 5.7. With about a quarter of your skin bare, a full dose takes around 9 minutes for skin type III at age 30, and about 18 minutes at age 65.
- Stop well before your skin turns pink. At this UV level skin type III can start to burn after about 35 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 | 6 min | 12 min | 23 min |
| Type II | 8 min | 15 min | 29 min |
| Type III | 9 min | 18 min | 35 min |
| Type IV | 14 min | 26 min | 53 min |
| Type V | 19 min | 35 min | 70 min |
| Type VI | 31 min | 58 min | 1.9 h |
Minutes at midday for about 1,000 IU of vitamin D with a quarter of the body bare, at Belize City, 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 Belize in December
| Place | Rating | Sun window | Full dose | Afternoon high | Rainy days |
|---|---|---|---|---|---|
| Ambergris Caye | Good | 6.2 h | 9 min | 27°C | 16/30 |
| San Pedro Town | Bad weather | 6.2 h | 9 min | 27°C | 21/30 |
| Caye Caulker | Bad weather | 6.1 h | 9 min | 27°C | 21/30 |
| Belize City | Bad weather | 6.0 h | 9 min | 28°C | 23/30 |
| Great Blue Hole | Bad weather | 6.2 h | 10 min | 27°C | 24/30 |
| Placencia | Bad weather | 6.1 h | 9 min | 28°C | 26/30 |
Other months in Belize
- Jan Good
- Feb Excellent
- Mar Excellent
- Apr Excellent
- May Excellent
- Jun Bad weather
- Jul Bad weather
- Aug Bad weather
- Sep Bad weather
- Oct Bad weather
- Nov Bad weather
- Dec Bad weather
Best months: January to May. Full Belize guide