UV Index in Perth, Australia

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Perth, Australia, where the sun shines brightly for much of the year, especially in its Csa climate. High UV levels can lead to painful sunburns and long-term skin damage, making awareness essential for maintaining skin health. As you plan your day under the Australian sun, be mindful of UV readings that peak around midday, with levels rising to 4 by noon. Stay informed, protect your skin, and enjoy the beautiful outdoors safely!

Hourly UV Index in Perth

The UV Index shows a dynamic profile throughout the day, peaking at 12:00 PM and 1:00 PM, where it reaches a maximum of 4, indicating a moderate level of UV radiation. Early morning hours, such as 7:00 AM and 8:00 AM, register a minimal 0 to 1, perfect for leisurely outdoor activities without concern for sun exposure. However, as the sun rises higher, 10:00 AM to 3:00 PM is the time to be cautious, with values ranging from 3 to 4. The intensity tapers off in the late afternoon, dropping back to 2 by 3:00 PM, and eventually fading to 0 after 6:00 PM. This data underscores the importance of being mindful of sun safety, especially during mid-day hours when the sun’s rays are at their strongest.

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	3	moderate	30 min
11:00	3	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 Perth

The UV Index experiences significant seasonal fluctuations, with the highest risk months being January, February, March, October, November, and December, where the index reaches extreme levels (up to 14) and the burn time is as short as 10 minutes. As spring arrives, the index decreases to very high levels in April (9) and high in May (6), extending burn times to 15 and 25 minutes respectively. The summer months see a moderate UV index (4) in June and July, allowing for longer exposure times of 30 minutes, before rising again in August and September to high (6) and very high (8) categories with shorter burn times. Visitors and residents should take precautionary measures during the extreme months by wearing protective clothing, applying sunscreen regularly, and limiting sun exposure, especially during peak hours, to ensure their safety from harmful UV rays.

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
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	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