UV Index in St. Thomas

Real-time UV forecast & tanning weather

Current Conditions

Loading live weather data...
0
Low
UV Index
🌡️
27°C
Temperature
🌤️
Windy
Conditions
☀️
Peak Tanning Window 12PM • UV 8

Hourly UV Forecast

☀️ Excellent tanning conditions • 9AM–4PM • 28°C • 20 km/h 🌬️
0
6AM
0
7AM
2
8AM
4
9AM
6
10AM
7
11AM
8
12PM
7
1PM
7
2PM
5
3PM
3
4PM
1
5PM
0
6PM
0
7PM
0
8PM
0
9PM
Low 0–2 Moderate 3–5 High 6–7 Very High 8–10 Extreme 11+

Daily UV Forecast

8
Wed 22
Excellent
9
Thu 23
Excellent
9
Fri 24
Good
9
Sat 25
Good
7
Sun 26
Excellent
8
Mon 27
Excellent
7
Tue 28
Good
6
Wed 29
Good
9
Thu 30
Good
11
Fri 31
Excellent

Location & Climate

St. Thomas benefits from a tropical climate with powerful, year-round UV radiation, ideal for tanning. Magens Bay is a top spot, but the strong equatorial sun requires careful timing, with tanning best suited for the early morning or late afternoon hours.

Tanning Tips

UV levels in St. Thomas are high year-round due to its tropical location. Always wear SPF 30+ and limit initial sessions to 15-20 minutes.

Weather data by Apple Weather

Monthly UV Index in St. Thomas

Average daily maximum UV index by month

Jan
10
Feb
10
Mar
10
Apr
11
May
11
Jun
12
Jul
12
Aug
12
Sep
11
Oct
11
Nov
10
Dec
10
Low Moderate High Very High Extreme

Best Months to Tan in St. Thomas

Based on average UV levels, the best months for tanning in St. Thomas are:

January Excellent February Excellent March Excellent April Excellent May Excellent June Excellent July Excellent August Excellent September Excellent October Excellent November Excellent December Excellent

Rating based on average monthly UV index

Related Guides

Tanning in UV 9-10+ → Aggressive Tanning — What to Know → Safe Tanning Tips → Foods That Help You Tan → How to Get Rid of a Tan →

Tanning Tools & Calculators

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Tanning Time Calculator

Calculate your ideal tanning time based on skin type and UV index

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Sunburn Calculator

Find out how long until you burn based on your skin type and current UV

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Skin Type Quiz

Discover your Fitzpatrick skin type and get personalized tanning advice

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Tanning Routine Creator

Build a personalized tanning plan based on your skin, UV, and experience

Frequently Asked Questions

What is the UV index in St. Thomas right now?
The current UV index in St. Thomas is shown in the live weather section above. UV levels change throughout the day, typically peaking between 11 AM and 2 PM local time.
What is the best month to tan in St. Thomas?
The best months for tanning in St. Thomas are January, February, March, April, May, June, July, August, September, October, November, December, when average UV levels reach 7 or higher.
How long should I tan in St. Thomas?
Tanning time depends on your skin type and the current UV index. For a moderate UV of 11, a person with Skin Type III (medium complexion) can safely tan for about 14 minutes per session. Use our Tanning Calculator for personalized recommendations.
Is it safe to tan in UV index 12?
UV index 12 is classified as Extreme. Extreme — stay in shade during peak hours. Tanning is not recommended without strong protection.
When is the peak UV time in St. Thomas?
UV levels in St. Thomas typically peak between 11:00 AM and 2:00 PM local time. The exact peak depends on the season, cloud cover, and altitude.

UV Index in Nearby Cities

12
St. John
Avg. Peak UV
› 12
Culebra
Avg. Peak UV
› 12
Vieques
Avg. Peak UV
› 12
Virgin Gorda
Avg. Peak UV
› 12
St. Croix
Avg. Peak UV
› 12
Fajardo
Avg. Peak UV
›

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