UV Index in Morro Bay, United States

Last updated: June 2, 2025

In Morro Bay, United States, being aware of the UV Index is crucial for protecting your skin and overall health. Understanding the varying levels of ultraviolet radiation helps prevent sunburn and reduces long-term skin damage. With a Csb climate that features mild summers and cool coastal air, Morro Bay experiences periods of heightened UV exposure, particularly between 11:00 AM and 1:00 PM, when the UV Index can peak at 12. Staying informed about these levels empowers residents and visitors alike to enjoy the sun safely while making the most of beautiful coastal days.

Hourly UV Index in Morro Bay

The UV Index today showcases a striking climb in intensity as the sun rises, starting from a modest 1 at 7:00 AM. As the morning unfolds, the index steadily elevates, reaching 4 by 9:00 AM before peaking at a blistering 12 at 1:00 PM—the most dangerous time for exposure. The afternoon shows a slight decline, with values tapering from 11 at 2:00 PM back down to 1 by 7:00 PM. This fluctuation highlights the importance of being sun-smart, especially during the peak hours when the risk of harmful UV radiation is at its highest. Remember to protect your skin and seek shade if you'll be outdoors!

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	4	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	11	extreme	10 min
13:00	12	extreme	10 min
14:00	11	extreme	10 min
15:00	9	very high	15 min
16:00	6	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Morro Bay

Throughout the year, UV exposure varies significantly, peaking during the summer months. High-risk months are March through August, featuring very high to extreme UV Index values, particularly in June and July, when the index reaches 12 and the burn time drops to just 10 minutes. To mitigate the risk of UV-related skin damage, it is crucial for both visitors and residents to take precautions during these months, such as wearing sunscreen, protective clothing, and seeking shade when outdoors, especially during peak sunlight hours. In contrast, from November to February, the UV Index decreases to moderate levels, allowing for more relaxed outdoor activities with a burn time of 30 minutes in most cases. However, vigilance remains essential year-round to ensure skin health.

Monthly Maximum UV Index for Morro Bay, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Morro Bay. 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 Morro Bay, 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 Morro Bay UV Index with Other United States Cities

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

Morro Bay's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Chicago UVI	3	4	6	8	9	10	10	9	8	6	4	2
Brooklyn UVI	3	5	6	8	10	10	9	9	8	6	4	2
New York City UVI	3	5	6	8	10	10	9	9	8	6	4	2
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Morro Bay	4	5	8	9	10	12	12	11	9	7	5	3
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5