UV Index in Perth, Australia

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Perth, Australia, where the sun shines brightly and exposure levels can vary throughout the day. Being aware of UV levels helps prevent sunburn and promotes long-term skin health, allowing you to enjoy the outdoors safely. With Perth's Cfb climate, characterized by warm summers and mild winters, the risks of harmful UV rays are significant, especially in the midday hours when the index can reach higher levels. Stay informed and protect your skin while soaking up the sun!

Hourly UV Index in Perth

From the early hours of the day, the UV Index starts at 0 at 7:00 AM, indicating minimal risk. As the sun climbs higher, it gradually increases to 2 by 10:00 AM, peaking at 2 from 10:00 AM to 2:00 PM, which suggests a moderate risk for harm from unprotected sun exposure. After a brief peak, the index begins to decline again, returning to 1 by 3:00 PM and dropping to 0 by 5:00 PM, signaling a safe time to be outdoors without sun protection. Overall, it's a fairly mild day for UV exposure, making it a good time for outdoor activities—but remember to stay mindful of the midday sun!

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	0	low	45 min
08:00	1	low	45 min
09:00	1	low	45 min
10:00	2	low	45 min
11:00	2	low	45 min
12:00	2	low	45 min
13:00	2	low	45 min
14:00	2	low	45 min
15:00	1	low	45 min
16:00	1	low	45 min
17:00	0	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Perth

Throughout the year, UV Index levels fluctuate significantly, with January and December experiencing the highest readings at 13, categorized as extreme, indicating a burn time of just 10 minutes. February and November also pose high risk with an index of 11, remaining in the extreme category. As we transition into March, a gradual decrease to 10 places it in the very high category with a burn time of 15 minutes. The risk wanes through the warmer months, reaching a low of 2 in June and July, where the burn time extends to 45 minutes. By August, UV levels rise again to 4, categorizing it as moderate, before returning to a high level of 6 in April and September. Visitors and residents should prepare for increased sun exposure in the high-risk months of January, February, October, and November, advising protective measures such as sunscreen, hats, and limited time in direct sunlight to safeguard against harmful UV radiation.

Monthly Maximum UV Index for Perth, Australia

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

The table above highlights how UV exposure in Perth 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.

Perth'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
Perth	13	11	10	6	3	2	2	4	6	8	11	13
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
Brisbane UVI	15	15	13	10	7	5	5	8	9	12	14	15