UV Index in San Juan

Real-time UV forecast & tanning weather

Current Conditions

Loading live weather data...
0
Low
UV Index
🌡️
26°C
Temperature
☀️
Clear sky
Conditions
☀️
Peak Tanning Window 1PM • UV 9

Hourly UV Forecast

☀️ Excellent tanning conditions • 9AM–5PM • 29°C • 14 km/h 🌬️
0
6AM
1
7AM
2
8AM
4
9AM
6
10AM
7
11AM
9
12PM
9
1PM
8
2PM
7
3PM
6
4PM
3
5PM
2
6PM
0
7PM
0
8PM
0
9PM
Low 0–2 Moderate 3–5 High 6–7 Very High 8–10 Extreme 11+

16-Day UV Forecast

9
Mon 1
Excellent
9
Tue 2
Excellent
9
Wed 3
Excellent
9
Thu 4
Excellent
9
Fri 5
Excellent
9
Sat 6
Excellent
9
Sun 7
Excellent
9
Mon 8
Good
8
Tue 9
Good
9
Wed 10
Excellent
6
Thu 11
Excellent
9
Fri 12
Excellent
9
Sat 13
Good
9
Sun 14
Excellent
9
Mon 15
Excellent
0
Tue 16
Excellent

Location & Climate

San Juan offers a robust tanning climate with very high UV levels that persist throughout the entire year, amplified by its tropical latitude and frequent sunshine. Embrace the strong rays by finding a spot on the expansive beaches of Isla Verde, particularly during the morning hours before the sun reaches its absolute peak.

Tanning Tips

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

Weather data by Open-Meteo (CC BY 4.0)

Monthly UV Index in San Juan

Average daily maximum UV index by month

Jan
8
Feb
9
Mar
10
Apr
11
May
11
Jun
12
Jul
12
Aug
12
Sep
11
Oct
10
Nov
8
Dec
7
Low Moderate High Very High Extreme

Best Months to Tan in San Juan

Based on average UV levels, the best months for tanning in San Juan are:

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

Rating based on average monthly UV index

Related Guides

Tanning in UV 9-10+ → Aggressive Tanning — What to Know → Safe Tanning Tips → Melanin-Boosting Foods → Best Time of Day to 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 San Juan right now?
The current UV index in San Juan 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 San Juan?
The best months for tanning in San Juan 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 San Juan?
Tanning time depends on your skin type and the current UV index. For a moderate UV of 10, a person with Skin Type III (medium complexion) can safely tan for about 15 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 San Juan?
UV levels in San Juan 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
Luquillo
Avg. Peak UV
› 12
Fajardo
Avg. Peak UV
› 12
Ponce
Avg. Peak UV
› 12
Vieques
Avg. Peak UV
› 12
Culebra
Avg. Peak UV
› 12
Isabela
Avg. Peak UV
›

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