UV Index in San Francisco, Panama

Last updated: July 2, 2025

In San Francisco, Panama, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn, particularly in a region where exposure can vary significantly throughout the day. Understanding the UV levels helps locals and visitors alike to take proactive measures against harmful solar radiation. San Francisco’s warm, tropical climate often brings high UV readings, peaking at a significant 14 around midday, when the sun is most intense. By keeping an eye on the UV Index, you can enjoy the sun safely while protecting your skin from the risks associated with overexposure.

Hourly UV Index in San Francisco

The UV Index for the day reveals a dynamic pattern of solar intensity. Early in the morning, the index gradually rises from a modest 1 at 07:00 to reach a notable 5 by 09:00. As the sun climbs higher, peak intensity hits an impressive 14 by noon and remains steady until 13:00. From there, a noticeable decline begins, with readings dropping to 12 at 14:00 and gradually tapering off to a low of 0 by 19:00. This data highlights the importance of sun protection during the midday hours when UV levels are at their highest, making it crucial for outdoor enthusiasts to stay informed and take precautions.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	2	low	45 min
09:00	5	moderate	30 min
10:00	8	very high	15 min
11:00	12	extreme	10 min
12:00	14	extreme	10 min
13:00	14	extreme	10 min
14:00	12	extreme	10 min
15:00	8	very high	15 min
16:00	5	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in San Francisco

The UV Index experiences extremely high levels throughout most of the year, peaking at 15 from March to May. Residents and visitors should take extra caution during these high-risk months, particularly from January through April when the UV Index remains consistently above 12. Even in the summer months of June to September, the UV Index remains at 14, indicating a persistent risk for skin damage. It is advisable to protect your skin by wearing sunscreen, protective clothing, and seeking shade whenever possible, especially during peak sun hours. Remember that even on cloudy days, UV rays can still pose a risk, so stay vigilant year-round.

Monthly Maximum UV Index for San Francisco, Panama

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in San Francisco. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for San Francisco, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare San Francisco UV Index with Other Panama Cities

The table above highlights how UV exposure in San Francisco compares to other major locations across Panama. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

San Francisco's solar exposure compared to other cities in Panama. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Arraijan UVI	12	13	14	15	14	13	14	13	13	13	11	10
Juan Diaz UVI	12	13	14	15	14	13	14	13	13	13	11	10
San Miguelito UVI	12	13	14	15	14	13	14	13	13	13	11	10
Panama UVI	12	13	14	15	14	13	14	13	13	13	11	10
David UVI	12	13	14	15	14	13	14	13	14	14	12	11
San Francisco	12	14	15	15	15	14	14	14	14	14	12	11