UV Index in Portland, Australia

Last updated: July 2, 2025

Understanding the UV Index in Portland, Australia, is crucial for protecting your skin from harmful UV radiation. With a climate characterized by mild summers and cool winters, residents must remain vigilant, especially during peak hours when the UV levels rise. The UV Index provides valuable information for sunburn prevention and long-term skin health, helping you enjoy outdoor activities safely. Typically, Portland experiences moderate UV exposure, peaking at a level of 4 between 11:00 AM and 1:00 PM. By being aware of these levels, you can take proactive measures to reduce your risk and stay sun-safe throughout the year.

Hourly UV Index in Portland

The UV Index for the day reveals a gradual increase in solar intensity as the sun climbs higher. Starting from a mild 1 at 07:00 and 08:00, the index nudges to 2 by 09:00 and peaks at 4 between 11:00 and 13:00, indicating a notable amount of UV exposure. As the afternoon progresses, the value slightly tapers off to 3 at 14:00 and dwindles down to 2 by 15:00. The evening brings a steep decline, with the index dropping to 1 at 16:00 and then to 0 after 18:00. Stay protected during the midday hours when the UV Index is at its highest!

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	2	low	45 min
10:00	3	moderate	30 min
11:00	4	moderate	30 min
12:00	4	moderate	30 min
13:00	4	moderate	30 min
14:00	3	moderate	30 min
15:00	2	low	45 min
16:00	1	low	45 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Portland

Throughout the year, UV levels fluctuate significantly, with January, February, March, October, November, and December classified as high-risk months due to their extreme UV Index ratings, all peaking at 15 and requiring only 10 minutes of exposure before risking burns. As the year progresses, April and September feature very high UV readings of 8 (burn time 15 minutes), while May and August see moderate sector shifts to high (UV Index 6; burn time 25 minutes). The summer months of June and July present a slight respite with moderate UV levels of 4, allowing for 30 minutes of safe exposure. Given these variations, it is crucial for both visitors and residents to stay vigilant about sun protection, especially during the extreme months, by wearing adequate sunscreen, protective clothing, and seeking shade to minimize UV exposure risks.

Monthly Maximum UV Index for Portland, Australia

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

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

Portland's solar exposure compared to other cities in Australia. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Melbourne UVI	14	12	11	7	4	3	3	5	7	9	12	14
Adelaide UVI	14	13	12	8	5	3	4	5	7	10	12	15
Sydney UVI	14	13	11	8	5	3	4	6	8	10	12	14
Perth UVI	14	14	11	9	6	4	4	6	8	11	13	14
Portland	15	14	12	8	6	4	4	6	8	11	13	15
Brisbane UVI	15	15	13	10	7	5	5	8	9	12	14	15