UV Index in Oakland, United States

Last updated: May 3, 2025

Understanding the UV Index in Oakland, United States, is crucial for safeguarding your skin while enjoying the outdoors. As one of the sunniest cities in California, Oakland experiences elevated UV levels, particularly during the midday hours, peaking at a staggering 11 between 1 PM and 2 PM. Being aware of these UV levels is essential for preventing sunburn and promoting long-term skin health, especially given the local climate characterized by warm summers and mild winters. By keeping track of the UV Index, Oakland residents can take proactive measures to protect themselves from harmful UV radiation while enjoying all that their vibrant city has to offer.

Hourly UV Index in Oakland

At dawn, the sun's embrace is gentle, with a UV Index of just 1 at 07:00 and 08:00, making it a safe time for morning strolls. However, as the day unfolds, intensity rises sharply; by 10:00, the index escalates to 5, signaling the need for sun protection. The peak arrives at noon, reaching an intense 10, and by 13:00, it skyrockets to an alarming 11, urging caution for outdoor activities. Gradually winding down, the index descends to 8 at 15:00 before tapering off further to 2 by 18:00. As dusk approaches, the evening's reflection offers a safe retreat as the index returns to a welcoming 1 by 19:00. Stay vigilant during midday hours for a safer sun experience!

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	1	low	45 min
09:00	3	moderate	30 min
10:00	5	moderate	30 min
11:00	8	very high	15 min
12:00	10	very high	15 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	8	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 Oakland

As the seasons change, the UV Index demonstrates considerable variation, impacting burn potential and risk levels for skin exposure. The highest risk months occur from March to August, with values peaking at 11 during May, June, and July, indicating an extreme exposure category with a burn time of just 10 minutes. February marks a shift into a high risk category, while September through November gradually decreases the UV levels, transitioning back to moderate by December. It is crucial for visitors and residents alike to exercise caution during these high-risk months by wearing protective clothing, applying sunscreen regularly, and seeking shade to mitigate the potential for skin damage.

Monthly Maximum UV Index for Oakland, United States

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

The table above highlights how UV exposure in Oakland 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.

Oakland'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
Oakland	4	7	8	10	11	11	11	10	9	8	6	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5